Datasheet TPS65186 Datasheet (Texas Instruments)

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Page 1

VIN

I/O Control

From Input

Supply

(3.0 V-6.0 V)

Temp

Sensor

DCDC2

VN_SW

DCDC1

VB_SW

From Input

Supply

(3.0 V-6.0 V)

VDDH_D VDDH_DRV VDDH_FB

Positive Charge

Pump

VPOS

LDO1

VEE_D VEE_DRV VEE_FB

Negative

Charge

Pump

VCOM

VCOM_PANEL

VNEG

LDO2

VCOM

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Tools & Software

Support & Community

SLVSB04A –JULY 2011–REVISED AUGUST 2015

TPS65186 PMIC for E Ink®Vizplex™ Enabled Electronic Paper Display

1 Features 2 Applications

• Single Chip Power-Management Solution for E Ink®Vizplex™ Electronic Paper Displays Panels

• Generates Positive and Negative Gates, Source • EPD Power Supplies Driver Voltages, and Back-Plane Bias From a Single, Low-Voltage Input Supply

• Supports 9.7 Inch and Larger Panel Size

• 3-V to 6-V Input Voltage Range

• Boost Converter for Positive Rail Base

• Inverting Buck-Boost Converter for Negative Rail Software Timing Controller (OMAP™) Base

• Two Adjustable LDOs for Source Driver Supply – LDO1: 15 V, 120 mA (VPOS) – LDO2: –15 V, 120 mA (VNEG)

• Accurate Output Voltage Tracking – VPOS – VNEG = ±50 mV

• Two Charge Pumps for Gate Driver Supply – CP1: 22 V, 10 mA (VDDH) – CP2: –20 V, 12 mA, (VEE)

• Adjustable VCOM Driver for Accurate PanelBackplane Biasing

– 0 V to –5.11 V – ± 1.5% accuracy (±10 mV) – 9-Bit Control (10-mV Nominal Step Size)

• Integrated 10-Ω, 3.3-V Power Switch for Disabling System Power Rail to E-Ink Panel

• Power Supply for Active Matrix E Ink Vizplex

• E-Book Readers

• EPSON®S1D13522 (ISIS) Timing Controller

• EPSON®S1D13521 (Broadsheet) Timing Controller

• Application Processors With Integrated or

3 Description

The TPS65186 device is a single-chip power supply designed to for E Ink Vizplex displays used in portable e-reader applications, and the device supports panel sizes up to 9.7 inches and greater. Two high-efficiency DC-DC boost converters generate ±16-V rails that are boosted to 22 V and –20 V by two change pumps to provide the gate driver supply for the Vizplex panel. Two tracking LDOs create the ±15-V source driver supplies that support up to 120-mA of output current. All rails are adjustable through the I2C interface to accommodate specific panel requirements.

Device Information

PART NUMBER PACKAGE BODY SIZE (NOM)

TPS65186 VQFN (48) 7.00 mm × 7.00 mm (1) For all available packages, see the orderable addendum at

the end of the data sheet.

(1)

TPS65186

Typical Application Schematic

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.

Page 2

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

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1 Features.................................................................. 1

2 Applications ........................................................... 1

3 Description ............................................................. 1

4 Revision History..................................................... 2

5 Description (continued)......................................... 3

6 Pin Configuration and Functions......................... 3

7 Specifications......................................................... 5

7.1 Absolute Maximum Ratings ...................................... 5

7.2 ESD Ratings.............................................................. 5

7.3 Recommended Operating Conditions....................... 5

7.4 Thermal Information.................................................. 6

7.5 Electrical Characteristics........................................... 6

7.6 Timing Requirements: Data Transmission.............. 10

7.7 Typical Characteristics............................................ 12

8 Detailed Description............................................ 15

8.1 Overview ................................................................. 15

8.2 Functional Block Diagram....................................... 16

8.3 Feature Description................................................. 17

8.4 Device Functional Modes........................................ 24

8.5 Programming........................................................... 26

8.6 Register Maps......................................................... 27

9 Application and Implementation ........................ 44

9.1 Application Information............................................ 44

9.2 Typical Application ................................................. 44

10 Power Supply Recommendations ..................... 46

11 Layout................................................................... 46

11.1 Layout Guidelines ................................................. 46

11.2 Layout Example .................................................... 46

12 Device and Documentation Support................. 47

12.1 Device Support...................................................... 47

12.2 Community Resources.......................................... 47

12.3 Trademarks........................................................... 47

12.4 Electrostatic Discharge Caution............................ 47

12.5 Glossary................................................................ 47

13 Mechanical, Packaging, and Orderable

Information........................................................... 47

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Original (July 2011) to Revision A Page

• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and

Mechanical, Packaging, and Orderable Information section.................................................................................................. 1

• Changed R

from “TBD” to “5 Ω”........................................................................................................................................ 8

OUT

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VREF – 1

nINT – 2

VNEG – 3

VNEG_IN – 4

WAKEUP – 5

DGND – 6

INT_LDO – 7

AGND1 – 8

N/C – 9

VIN – 10

N/C – 11

23 – PBKG

22 – PWRUP

21 – N/C

20 – N/C

19 – N/C

18 – SDA

17 – SCL

16 – VCOM_PWR

15 – N/C

14 – VCOM

13 – N/C

24 – PWR_GOODVDDH_IN – 37

N/C – 38

N/C – 39

VB_SW – 40

PGND1 – 41

VB – 42

VPOS_IN – 43

VPOS – 44

VIN3P3 – 45

V3P3 – 46

TS – 47

AGND2 – 48

36 – VDDH_DRV

26 – N/C

35 – VDDH_D

34 – VDDH_FB

33 – PGND2

32 – VEE_FB

31 – VEE_D

27 – VIN_P

30 – VEE_DRV

29 – VEE_IN

28 – VN

25 – VN_SW

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SLVSB04A –JULY 2011–REVISED AUGUST 2015

5 Description (continued)

Accurate back-plane biasing is provided by a linear amplifier that can be adjusted from 0 V to –5.11 V with 9-bit control through the serial interface; it can also source or sink current depending on panel condition. The TPS65186 supports automatic panel kickback voltage measurement, which eliminates the need for manual VCOM calibration in the production line. The measurement result can be stored in nonvolatile memory to become the new VCOM power-up default value.

TPS65186 is available in a 48-pin 7-mm × 7-mm2VQFN with 0.5-mm pitch.

6 Pin Configuration and Functions

RGZ Package

48-Pin VQFN

Top View

NAME NO.

AGND1 8 — Analog ground for general analog circuitry AGND2 48 — Reference point to external thermistor and linearization resistor DGND 6 — Digital ground. Connect to ground plane. INT_LDO 7 O Filter pin for 2.7-V internal supply nINT 2 O Open drain interrupt pin (active low)

9, 11, 13, 15,

38, 39

N/C 19, 20, 21, 26, — Not internally connected

Pin Functions

I/O DESCRIPTION

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TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

Pin Functions (continued)

NAME NO.

PBKG 23 — PGND1 41 — Power ground for DCDC1

PGND2 33 — Power ground for CP1 (VDDH) and CP2 (VEE) charge pumps PWR_GOOD 24 O PWRUP 22 I Power-up pin. Pull this pin high to power up all output rails.

SCL 17 I Serial interface (I2C) clock input SDA 18 I/O Serial interface (I2C) data input/output

TS 47 I V3P3 46 O Output pin of 3.3-V power switch VB 42 I VB_SW 40 O Boost converter switch out (DCDC1)

VCOM 14 I Filter pin for panel common-voltage driver VCOM_CTRL 12 I VCOM_PWR 16 I Internal supply input pin to VCOM buffer. Connect to the output of DCDC2.

VDDH_D 35 O Base voltage output pin for positive charge pump (CP1) VDDH_DRV 36 O Driver output pin for positive charge pump (CP1) VDDH_FB 34 I Feedback pin for positive charge pump (CP1) VDDH_IN 37 I Input supply pin for positive charge pump (CP1) VEE_D 31 I Base voltage output pin for negative charge pump (CP2) VEE_DRV 30 O Driver output pin for negative charge pump (CP2) VEE_FB 32 I Feedback pin for negative charge pump (CP2) VEE_IN 29 I Input supply pin for negative charge pump (CP2) (VEE) VIN 10 I Input power supply to general circuitry VIN3P3 45 I Input pin to 3.3-V power switch VIN_P 27 I Input power supply to inverting buck-boost converter (DCDC2)

VN 28 I VNEG 3 O Negative supply output pin for panel source drivers

VNEG_IN 4 I Input pin for LDO2 (VNEG) VN_SW 25 O Inverting buck-boost converter switch out (DCDC2) VREF 1 O Filter pin for 2.25-V internal reference to ADC VPOS 44 O Positive supply output pin for panel source drivers VPOS_IN 43 I Input pin for LDO1 (VPOS)

WAKEUP 5 I commands after WAKEUP pin is pulled high but power rails remain disabled until

PowerPad — —

(1) There will be 0-ns of deglitch for PWRx. (2) There will be 62.52-µs of deglitch for VCOM_CTRL. (3) There will be 93.75-µs of deglitch for WAKEUP.

I/O DESCRIPTION

Die substrate. Connect to VN (–16 V) with short, wide trace. Wide copper trace will improve heat dissipation.

Open-drain power good output pin. Pin is pulled low when one or more rails are disabled or not in regulation. DCDC1, DCDC2, and VCOM have no effect on this pin.

(1)

Thermistor input pin. Connect a 10-kΩ NTC thermistor and a 43-kΩ linearization resistor between this pin and AGND.

Feedback pin for boost converter (DCDC1) and supply for VPOS LDO and VDDH charge pump

VCOM enable. Pull this pin high to enable the VCOM amplifier. When pin is pulled low and VN is enabled, VCOM discharge is enabled.

(2)

Feedback pin for inverting buck-boost converter (DCDC2) and supply for VNEG LDO and VEE charge pump

Wake-up pin (active high). Pull this pin high to wake up from sleep mode. IC accepts I2C PWRUP pin is pulled high.

(3)

PowerPad, internally connected to PBKG. Connect to VN with short, wide trace. Wide copper trace will improve heat dissipation. PowerPad must not be connected to ground.

(1)

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SLVSB04A –JULY 2011–REVISED AUGUST 2015

7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

Input voltage at VIN Ground pins to system ground –0.3 0.3 V Voltage at SDA, SCL, WAKEUP, PWRUP, VCOM_CTRL, VDDH_FB, VEE_FB,

PWR_GOOD, nINT Voltage on VB, VB_SW, VPOS_IN, VDDH_IN –0.3 20 V Voltage on VN, VEE_IN, VCOM_PWR, VNEG_IN –20 0.3 V Voltage from VIN_P to VN_SW –0.3 30 V Peak output current Internally limited mA

Continuous total power dissipation 2 W TJOperating junction temperature –10 125 °C TAOperating ambient temperature T

Storage temperature –65 150 °C

stg

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating

Conditions is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability. (2) All voltage values are with respect to network ground terminal. (3) TI recommends that copper plane in proper size on board be in contact with die thermal pad to dissipate heat efficiently. Thermal pad is

electrically connected to PBKG, which is supposed to be tied to the output of buck-boost converter. Thus wide copper trace in the buck-

boost output will help heat dissipated efficiently.

(2)

, VIN_P, VIN3P3 –0.3 7 V

(3)

(1)(2)

MIN MAX UNIT

–0.3 3.6 V

–10 85 °C

7.2 ESD Ratings

Human body model (HBM), per ANSI/ESDA/JEDEC JS-001

(ESD)

Electrostatic discharge V

Charged device model (CDM), per JEDEC specification JESD22- ±500

(2)

C101

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. (2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

(1)

7.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN NOM MAX UNIT

Input voltage at VIN, VIN_P, VIN3P3 3 3.7 6 V Voltage at SDA, SCL, WAKEUP, PWRUP, VCOM_CTRL, VDDH_FB,

VEE_FB, PWR_GOOD, nINT

Operating ambient temperature –10 85 °C Operating junction temperature –10 125 °C

0 3.6 V

VALUE UNIT

±2000

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SLVSB04A –JULY 2011–REVISED AUGUST 2015

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7.4 Thermal Information

TPS65186

THERMAL METRIC

(1)

RGZ [VQFN] UNIT

48 PINS

θJA

θJC(top)

θJB

θJC(bot)

Junction-to-ambient thermal resistance 30 °C/W Junction-to-case (top) thermal resistance 15.6 °C/W Junction-to-board thermal resistance 6.6 °C/W Junction-to-top characterization parameter 0.2 °C/W Junction-to-board characterization parameter 6.6 °C/W Junction-to-case (bottom) thermal resistance 0.9 °C/W

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

7.5 Electrical Characteristics

VIN= 3.7 V, TA= –10°C to 85ºC, Typical values are at TA= 25ºC (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

INPUT VOLTAGE

UVLO

HYS

INPUT CURRENT

STD

SLEEP

INTERNAL SUPPLIES

NT_LDO

INT_LDO

REF

DCDC1 (POSITIVE BOOST REGULATOR)

OUT

DS(ON)

LIMIT

DCDC1

ESR Output capacitor ESR 20 mΩ

(1) Contact TI for 1-A, 2-A, or 2.5-A option.

Input voltage range 3 3.7 6 V Undervoltage lockout threshold VINfalling 2.9 V Undervoltage lockout hysteresis VINrising 400 mV

Operating quiescent current into VINDevice switching, no load 5.5 mA Operating quiescent current into VINDevice in standby mode 130 µA Shutdown current Device in sleep mode 3.5 10 µA

Internal supply 2.7 V Nominal output capacitor Capacitor tolerance ±10% 1 4.7 µF Internal supply 2.25 V Nominal output capacitor Capacitor tolerance ±10% 3.3 4.7 µF

Input voltage range 3 3.7 6 V Power good threshold Fraction of nominal output voltage 90% Power good time-out Not tested in production 50 ms Output voltage range 16 V DC set tolerance –4.5% 4.5% Output current 250 mA MOSFET ON-resistance VIN= 3.7 V 350 mΩ Switch current limit 1.5

(1)

Switch current accuracy –30% 30% Switching frequency 1 MHz Inductor 2.2 µH Nominal output capacitor Capacitor tolerance ±10% 1 2 × 4.7 µF

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SLVSB04A –JULY 2011–REVISED AUGUST 2015

Electrical Characteristics (continued)

VIN= 3.7 V, TA= –10°C to 85ºC, Typical values are at TA= 25ºC (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

DCDC2 (INVERTING BUCK-BOOST REGULATOR)

OUT

DS(ON)

LIMIT

DCDC1

ESR Capacitor ESR 20 mΩ

LDO1 (VPOS)

POS_IN

SET

INTERVAL

OUTTOL

DROPOUT

LOADREG

LOAD

LIMIT

LDO1

LDO2 (VNEG)

NEG_IN

SET

INTERVAL

OUTTOL

DROPOUT

LOADREG

LOAD

LIMIT

LDO2

Input voltage range 3 3.7 6 V Power good threshold Fraction of nominal output voltage 90% Power good time-out Not tested in production 50 ms Output voltage range –16 V DC set tolerance –4.5% 4.5% Output current 250 mA MOSFET ON-resistance VIN= 3.7 V 350 mΩ Switch current limit 1.5

(1)

Switch current accuracy –30% 30% Inductor 4.7 µH Nominal output capacitor Capacitor tolerance ±10% 1 3x4.7 µF

Input voltage range 15.2 16 16.8 V Power good threshold Fraction of nominal output voltage 90% Power good time-out Not tested in production 50 ms

Output voltage set value 14.25 15 15 V

VIN= 16 V,

VSET[2:0] = 0x3h to 0x6h Output voltage set resolution VIN= 16 V 250 mV Output tolerance V Dropout voltage I Load regulation – DC I

= 15 V, I

SET

= 120 mA 250 mV

LOAD

= 10% to 90% 1%

LOAD

= 20 mA –1% 1%

LOAD

Load current range 120 mA Output current limit 120 mA Nominal output capacitor Capacitor tolerance ±10% 1 4.7 µF

Input voltage range 16.8 16 –15.2 V Power good threshold Fraction of nominal output voltage 90% Power good time-out Not tested in production 50 ms

Output voltage set value –15 –15 –14.25 V

VIN= –16 V

VSET[2:0] = 0x3h to 0x6h Output voltage set resolution VIN= –16 V 250 mV Output tolerance V Dropout voltage I Load regulation – DC I

= –15 V, I

SET

= 120 mA 250 mV

LOAD

= 10% to 90% of I

LOAD

= –20 mA –1% 1%

LOAD

LOAD,MAX

1% Load current range 120 mA Output current limit 120 mA Nominal output capacitor Capacitor tolerance ±10% 1 4.7 µF

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SLVSB04A –JULY 2011–REVISED AUGUST 2015

Electrical Characteristics (continued)

VIN= 3.7 V, TA= –10°C to 85ºC, Typical values are at TA= 25ºC (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

LD01 (POS) AND LDO2 (VNEG) TRACKING

= ±15 V,

DIFF

Difference between VPOS and VNEG –50 50 mV

VCOM DRIVER

VCOM

Drive current 15 mA Allowed operating range –5.5 1 V

Accuracy

COM

Output voltage range –5.11 0 V Resolution 1LSB 10 mV Max number of EEPROM writes V

R R C

OUT IN VCOM

Output impedance VCOM_CTRL = high, Hi-Z = 0 5 Ω Input impedance, HiZ state HiZ = 1 150 MΩ Nominal output capacitor Capacitor tolerance ±10% 3.3 4.7 µF

CP1 (VDDH) CHARGE PUMP

DDH_IN

DDH_OUT

LOAD

Input voltage range 15.2 16 16.8 V Power good threshold Fraction of nominal output voltage 90% Power good time-out Not tested in production 50 ms Feedback voltage 0.998 V Accuracy I Output voltage range V Load current range 10 mA Switching frequency 560 kHz Driver capacitor 10 nF Output capacitor 1 2.2 µF

CP2 (VEE) NEGATIVE CHARGE PUMP

EE_IN

EE_OUT

LOAD

Input voltage range 16.8 –16 –15.2 V Power good threshold Fraction of nominal output voltage 90% Power good time-out Not tested in production 50 ms Feedback voltage –0.994 V Accuracy I Output voltage range V Load current range 12 mA Switching frequency 560 kHz Driver capacitor 10 nF Nominal output capacitor Capacitor tolerance ±10% 1 2.2 µF

SET

= ±20 mA, 0°C to 60°C

LOAD

Outside this range VCOM is shut down and VCOMF interrupt is set

VCOM[8:0] = 0x07Dh (–1.25 V), VIN= 3.4 V to 4.2 V, no load

VCOM[8:0] = 0x07Dh (–1.25 V), VIN= 3 V to 6 V, no load

calibration 100

COM

= 2 mA –2% 2%

LOAD

= 22 V, I

SET

= 2 mA –2% 2%

LOAD

= –20 V, I

SET

= 2 mA 21 22 23 V

LOAD

= 3 mA –21 –20 –19 V

LOAD

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–0.8% 0.8%

–1.5% 1.5%

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Electrical Characteristics (continued)

VIN= 3.7 V, TA= –10°C to 85ºC, Typical values are at TA= 25ºC (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

VIN3P3 TO V3P3 SWITCH

VIN3P3 = 3.3 V, ID= 10 mA

DS(ON)

MOSFET ON-resistance Ω

Over full temperature range VIN3P3 = 2.7 V, ID= 10 mA

Over full temperature range

DIS

THERMISTOR MONITOR

TMS

Offset V

TMS_HOT

TMS_COOL

TMS_MAX

NTC_PU

LINEAR

ADC ADC TMST

Discharge impedance to ground V3P3EN = 0 800 1000 1200 Ω

(2)

Temperature to voltage ratio Not tested in production –0.0161 V/°C Offset Temperature = 0°C 1.575 V

TMS

Temp hot trip voltage (T = 50°C) TEMP_HOT_SET = 0x8C 0.768 V Temp hot escape voltage (T = 45°C) TEMP_COOL_SET = 0x82 0.845 V Maximum input level 2.25 V Internal pullup resistor 7.307 kΩ External linearization resistor 43 kΩ ADC resolution Not tested in production, 1 bit 16.1 mV

RES

ADC conversion time Not tested in production 19 µs

DEL

Accuracy Not tested in production –1 1 LSB

TOL

LOGIC LEVELS AND TIMING CHARTERISTICS (SCL, SDA, nINT, PWR_GOOD, PWRUP)

(bias)

deglitch

SCL

Output low threshold level 0.4 V Input low threshold level 0.4 V

Input high threshold level 1.2 V Input bias current VIO= 1.8 V 1 µA Deglitch time, WAKEUP pin Not tested in production 500 Deglitch time, PWRUP pin Not tested in production 400 SCL clock frequency 400 kHz

IO= 3 mA, sink current (SDA, nINT, PWR_GOOD)

I2C slave address 7-bit address 0 × 48h

OSCILLATOR

OSC

Oscillator frequency 9 MHz Frequency accuracy TA= –40°C to 85°C –10% 10%

THERMAL SHUTDOWN

SHTDWN

Thermal trip point 150 °C Thermal hysteresis 20 °C

(2) 10-kΩ Murata NCP18XH103F03RB thermistor (1%) in parallel with a linearization resistor (43 kΩ, 1%) are used at TS pin for panel

temperature measurement.

(3) Contact TI for alternate address of 0 × 68h.

10.5

12.3

(3)

µs

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HD;STA

LOW

HD;DAT

SU;DAT

HIGH

SU;STA

HD;STA

SU;STO

BUF

S S

SDA

SCL

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SLVSB04A –JULY 2011–REVISED AUGUST 2015

7.6 Timing Requirements: Data Transmission

= 3.6 V ±5%, TA= 25ºC, CL= 100 pF (unless otherwise noted)

BAT

(SCL)

HD;STA

LOW

HIGH

SU;STA

HD;DAT

SU;DAT

SU;STO

BUF

Serial clock frequency 100 400 kHz Hold time (repeated) START condition. After this

period, the first clock pulse is generated.

LOW period of the SCL clock µs

HIGH period of the SCL clock

Setup time for a repeated START condition

Data hold time

Data setup time ns

Rise time of both SDA and SCL signals ns

Fall time of both SDA and SCL signals ns

Setup time for STOP condition

Bus Free Time Between Stop and Start Condition µs

Pulse width of spikes that must be suppressed by the input filter

Capacitive load for each bus line pF

SCL = 100 kHz 4 µs SCL = 400 kHz 600 ns SCL = 100 kHz 4.7 SCL = 400 kHz 1.3 SCL = 100 kHz 4 µs SCL = 400 kHz 600 ns SCL = 100 kHz 4.7 µs SCL = 400 kHz 600 ns SCL = 100 kHz 0 3.45 µs SCL = 400 kHz 0 900 ns SCL = 100 kHz 250 SCL = 400 kHz 100 SCL = 100 kHz 1000 SCL = 400 kHz 300 SCL = 100 kHz 300 SCL = 400 kHz 300 SCL = 100 kHz 4 µs SCL = 400 kHz 600 ns SCL = 100 kHz 4.7 SCL = 400 kHz 1.3 SCL = 100 kHz n/a n/a SCL = 400 kHz 0 50 SCL = 100 kHz 400 SCL = 400 kHz 400

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MIN NOM MAX UNIT

Figure 1. I2C Data Transmission Timing

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VIN

PWRUP

WAKEUP

VNEG

VEE

VPOS

VDDH

PWR _GOOD

1.8ms

DDLY2

DDLY3

DDLY4

DDLY1

300us max)(

STANDBY ACTIVE

SLEEP

ACTIVE

UDLY2

UDLY3

UDLY1

UDLY4

I2C

300us max)(

UDLY2

UDLY1

UDLY4

UDLY3

50ms

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Minimum delay time between WAKEUP rising edge and IC ready to accept I2C transaction. In this example, the first power-up sequence is started by pulling the PWRUP pin high (rising edge). Power-down is

initiated by pulling the WAKEUP pin low (device enters sleep mode). The second power-up sequence is initiated by pulling the WAKEUP pin high while the PWRUP pin is also high (power up from sleep to active).

Figure 2. Power-Up and Power-Down Timing Diagram

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7.7 Typical Characteristics

Figure 3. Default Power-Up Sequence Figure 4. Default Power-Down Sequence

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VIN= 3.7 V CIN= 100 µF VIN= 5 V CIN= 100 µF

Figure 5. Inrush Current Figure 6. Inrush Current

VIN= 3 V R

LOAD, VPOS

= 330 Ω R

LOAD, VNEG

= 330 Ω VIN= 3 V R

LOAD, VPOS

= 330 Ω R

No Load on VDDH, VEE No Load on VDDH, VEE

Figure 7. Switching Waveforms, VN Figure 8. Switching Waveforms, VB

LOAD, VNEG

= 330 Ω

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-5 0

-4 0

-3 0

-2 0

-1 0

1 0

2 0

3 0

4 0

5 0

0 25 50 75 100 12 5 1 50 1 75

C urr e nt [ m A]

VPOS + VNEG[mV]

IPO S= INEG

IPO S s we ep, INE G= 15m A

IPO S= 15m A, IN EG s wee p

1 1.5 2 2.5 3 3.5 4

VIN3P3[V]

R[ ], (VIN3p3-V3P3)/10mAW

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Typical Characteristics (continued)

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

VIN= 3.7 V R

No Load on VDDH, VEE No Load on VDDH, VEE

Figure 9. Switching Waveforms, VN Figure 10. Switching Waveforms, VB

VIN= 5 V R

No Load on VDDH, VEE No Load on VDDH, VEE

Figure 11. Switching Waveforms, VN Figure 12. Switching Waveforms, VB

LOAD, VPOS

= 330 Ω R

LOAD, VNEG

= 330 Ω VIN= 3.7 V R

= 330 Ω VIN= 5 V R

LOAD, VPOS

= 330 Ω R

LOAD, VNEG

= 330 Ω

VIN= 3.7 V I

Figure 13. 3p3V Switch Impedance

LOAD, V3p3

= 10 mA

VIN= 3.7 V

Figure 14. Source Driver Supply Tracking

Product Folder Links: TPS65186

Page 14

-2

-1. 5

-1

-0. 5

0. 5

1. 5

0 640 12 80 192 0 25 60 3200 3840 44 80 512 0

Fo rce d Ki ckba c k V ol tag e [m V]

Measurement error [LSB]

-5

-4

-3

-2

-1

0 64 128 192 25 6 320 38 4 44 8 51 2

VC OM CO DE

INL[mV]

-0. 2

-0 .15

-0. 1

-0 .05

0 .05

0. 1

0 .15

0. 2

0 6 4 12 8 1 92 2 56 3 20 38 4 4 48 51 2

V COM CO DE

DNL[LSB]

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

Typical Characteristics (continued)

www.ti.com

VIN= 3.7 V R

LOAD, VCOM

= 1 kΩ VIN= 3.7 V R

LOAD, VCOM

= 1 kΩ

Figure 15. VCOM Integrated Non-Linearity Figure 16. VCOM Differential Non-Linearity

VIN= 3.7 V

VIN= 3.7 V AVG[1:0] = 00 (Single Measurement)

Time from ACQ Bit Set to ACQC Interrupt Received

Figure 17. Kickback Voltage Measurement Error

Figure 18. Kickback Voltage Measurement Timing

VIN= 3.7 V AVG[1:0] = 11 (Eight Measurements)

Time from ACQ Bit Set to ACQC Interrupt Received

Figure 19. Kickback Voltage Measurement Timing

Product Folder Links: TPS65186

Page 15

TPS65186

www.ti.com

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8 Detailed Description

8.1 Overview

The TPS65186 device provides two adjustable LDOs, inverting buck-boost converter, boost converter, thermistor monitoring, and flexible power-up and power-down sequencing. The system can be supplied by a regulated input voltage ranging from 3 V to 6 V. The device is characterized across a –10°C to 85°C temperature range, best suited for personal electronic applications.

The I2C interface provides comprehensive features for using the TPS65186. All rails can be enabled or disabled. Power-up and power-down sequences can also be programmed through the I2C interface, as well as thermistor configuration and interrupt configuration. Voltage adjustment can also be controlled by the I2C interface.

The adjustable LDOs can supply up to 120 mA of current. The default output voltages for each LDO can be adjusted through the I2C interface. LDO1 (VPOS) and LDO2 (VNEG) track each other in a way that they are of opposite sign but same magnitude. The sum of VLDO1 and VLOD2 is guaranteed to be less than 50 mV.

There are two charge pumps: VDDH and VEE 10 mA and 12 mA respectively. These charge pumps boost the DC-DC boost converters ±16-V rails to provide a gate channel supply.

The power good functionality is open-drain output, if any of the four power rails (CP1, CP2, LDO1, LDO2) are not in regulation, encounters a fault, or is disabled the pin is pulled low. PWR_GOOD remains low if one of the rails is not enabled by the host and only after all rails are in regulation PWR_GOOD is released to Hi-Z state (pulled up by external resistor).

The TPS65186 provides circuitry to bias and measure an external NTC to monitor the display panel temperature in a range from –10°C to 85°C with and accuracy of ±1°C from 0°C to 50°C. Temperature measurement are triggered by the controlling host and the last temperature reading is always stored in the TMST_VALUE register. Interrupts are issued when the temperature exceeds the programmable HOT, or drops below the programmable COLD threshold, or when the temperature has changed by more than a user-defined threshold from the baseline value.

This device is offered in a 48-Pin, 0.5-mm Pitch, 7 mm × 7 mm × 0.9 mm (VQFN) RGZ package.

Product Folder Links: TPS65186

Page 16

DCDC2

VIN_P

10uF

4.7uF

VPOS

10nF 2.2uF

52.3k

VEE_D

VEE_DRV

VEE_FB

4.7uH

VN_SW

From Battery (3.0V-6. 0V)

VEE (-20V)

VPOS (15V )

DCDC1

4.7uF

2.2uH

PGND1

VB_SW

10uF

10nF2.2uF

47.5k

VDDH_D

VDDH_DRV

VDDH_FB

From Battery

(3.0V-6.0V )

VDDH (22 V)

VDDH_EN VEE_EN

PGND2 PGND2

VPOS_EN

LDO1

VEE

CHARGE

PUMP

PBKG

PGND2

4.7uF

VNEG_IN

VDDH_IN

VNEG

VNEG (-15V )

VNEG_EN

LDO2

PowerPad®

TEMP

SENSOR

43k

10k NTC

AGND2 ADC

TMST_VALUE[7:0]

4.7uF

VPOS_IN

VIN

10uF

VCOM_PWR

4.7uF

From Input Supply

(3.0V-6. 0V)

4.7uF

VREF

AGND1

DAC

VCOM

VCOM[8:0]

VCOM_CTRL

4.7uF

From uC

VREF

4.7uF

INT_LDO

VEE_IN

VDDH

CHARGE

PUMP

4.7uF

3.3V supply from system

To EPD panel

VIN3P3

V3P3

GATE DRIVER

V3P3_EN

SCL

From uC

From/to uC or DSP

SDA

10k

VIO

PWR_GOOD

10k

VIO

DIGITAL

CORE

WAKEUP

INT

10k

VIO

10k

VIO

From uC

PWRUP

From uC

To uC

DGND

100n 100n

To panel back- plane

(0 to -5.11 V)

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.2 Functional Block Diagram

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TPS65186

www.ti.com

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.3 Feature Description

8.3.1 Wake-Up and Power-Up Sequencing

The power-up and power-down order and timing is defined by user register settings. The default settings support the E Ink Vizplex panel and typically do not need to be changed.

In SLEEP mode the TPS65186 is completely turned off, the I2C registers are reset, and the device does not accept any I2C transaction. Pull the WAKEUP pin high with the PWRUP pin low and the device enters STANDBY mode that enables the I2C interface. Write to the UPSEQ0 register to define the order in which the output rails are enabled at power-up and to the UPSEQ1 registers to define the power-up delays between rails. Finally, set the ACTIVE bit in the ENABLE register to 1 to execute the power-up sequence and bring up all power rails. Alternatively, pull the PWRUP pin high (rising edge).

After the ACTIVE bit has been set, the negative boost converter (VN) is powered up first, followed by the positive boost (VB). The positive boost enable is gated by the internal power-good signal of the negative boost. Once VB is in regulation, it issues an internal power-good signal and after delay time UDLY1 has expired, STROBE1 is issued. The rail assigned to STROBE1 will power up next and after its power-good signal has been asserted and delay time UDLY2 has expired, STROBE2 is issued. The sequence continues until STROBE4 has occurred and the last rail has been enabled.

To power down the device, set the STANDBY bit of the ENABLE register to 1 or pull the PWRUP pin low (falling edge) and the TPS65186 will power down in the order defined by DWNSEQx registers. The delay times DDLY2, DDLY3, and DDLY4 are weighted by a factor of DFCTR which allows the user to space out the power down of the rails to avoid crossing during discharge. DFCTR is located in register DWNSEQ1. The positive boost (VB) is shut down together with the last rail at STROBE4. However, the negative boost (VN) remains up and running for another 50 ms. Then VN is powered down and the device enters STANDBY or SLEEP mode, depending on the WAKEUP pin.

If either the ACTIVE bit is set or the PWRUP pin is pulled high while the device is powering down, the powerdown sequence (STROBE1-4) is completed first, followed by a power-up sequence. VB and VN may or may not be powered down and depending on the relative timing of STROBE4 to the new power-up event.

During power-up, if the STANDBY bit is set or the PWRUP pin is pulled low, the power-up sequence is aborted and the power-down sequence starts immediately.

8.3.2 Dependencies Between Rails

Charge pumps, LDOs, and VCOM driver are dependent on the positive and inverting buck-boost converters and several dependencies exist that affect the power-up sequencing. These dependencies are the following:

• Inverting buck-boost (DCDC2) must be in regulation before positive boost (DCDC1) can be enabled. Internally, DCDC1 enable is gated by DCDC2 power good.

• Positive boost (DCDC1) must be in regulation before LDO2 (VNEG) can be enabled. Internally LDO2 enable is gated DCDC1 power good.

• Positive boost (DCDC1) must be in regulation before VCOM can be enabled. Internally VCOM enable is gated by DCDC1 power good.

• Positive boost (DCDC1) must be in regulation before negative charge pump (CP2) can be enabled. Internally CP2 enable is gated by DCDC1 power good.

• Positive boost (DCDC1) must be in regulation before positive charge pump (CP1) can be enabled. Internally CP1 enable is gated by DCDC1 power good.

• LDO2 must be in regulation before LDO1 can be enabled. Internally LDO1 enable is gated by LDO2 power good.

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Page 18

UDLY1

ACTIVE bit

WAKEUP high

VN PG VB PG

UDLY2

STROBE 1 STROBE 2

UDLY3

STROBE 3

UDLY4

STROBE 4

PG4

STANDBY bit

WAKEUP low

STROBE 2STROBE 1

DDLY1 DDLY2 DDLY3

STROBE 3 STROBE 4

DDLY4

50ms

powers up

1strail

powers up

2ndrail

powers up

3ndrail

powers up

4thrail

powers up

4thrail

powers down

3ndrail

powers down

2ndrail

powers down

1strail

powers down

powers up

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

Feature Description (continued)

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8.3.3 Soft Start

TPS65186 supports soft start for all rails, that is, inrush current is limited during startup of DCDC1, DCDC2, LDO1, LDO2, CP1, and CP2. If DCDC1 or DCDC2 are unable to reach power-good status within 50 ms, the corresponding UV flag is set in the interrupt registers, the interrupt pin is pulled low, and the device enters STANDBY mode. LDO1, LDO2, positive and negative charge pumps also have a 50-ms power-good time-out limit. If either rail is unable to power up within 50 ms after it has been enabled, the corresponding UV flag is set and the interrupt pin is pulled low. However, the device will remain in ACTIVE mode in this case.

8.3.4 VPOS/VNEG Supply Tracking

LDO1 (VPOS) and LDO2 (VNEG) track each other in a way that they are of opposite sign but same magnitude. The sum of VLDO1 and VLOD2 is guaranteed to be less than 50 mV.

TOP: Power-up sequence is defined by assigning strobes to individual rails. STROBE1 is the first strobe to occur after ACTIVE bit is set and STROBE4 is the last event in the sequence. Strobes are assigned to rails in UPSEQ0 register and delays between STROBES are defined in UPSEQ1 register.

BOTTOM: Power-down sequence is independent of power-up sequence. Strobes and delay times for power down sequence are set in DWNSEQ0 and DWNSEQ1 register.

Figure 20. Power-Up and Power-Down Sequence

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VIN

10uF

VCOM_PWR

4.7uF

To panel back-plane

(-0.5 V to -5.0 V, 15 mA)

From Input Supply

(3.0 V-6.0 V)

4.7uF

VREF AGND1

DAC

VCOM

VCOM[8:0]

VCOM_CTRL

4.7uF

From uC

VREF

4.7uF

INT_LDO

From VN (-17V)

TPS65186

www.ti.com

SLVSB04A –JULY 2011–REVISED AUGUST 2015

Feature Description (continued)

8.3.5 V3P3 Power Switch

The integrated power switch is used to cut the 3.3-V supply to the EPD panel and is controlled through the V3P3_EN pin of the ENABLE register. In SLEEP mode the switch is automatically turned off and its output is discharged to ground. The default power-up state is OFF. To turn the switch ON, set the V3P3_ENbit to 1.

8.3.6 VCOM Adjustment

VCOM is the output of a power-amplifier with an output voltage range of 0 V to –5.11 V, adjustable in 10-mV steps. In a typical application VCOM is connected to the VCOM terminal of the EPD panel and the amplifier is controlled through the VCOM_CTRL pin. With VCOM_CTRL high, the amplifier drives the VCOM pin to the voltage specified by the VCOM1 and VCOM2 register.

For ease of design, the VCOM_CTRL pin may also be tied to the battery or IO supply. In this case, VCOM is enabled with STROBE4 during the power-up sequence and disabled on STROBE1 of the power-down sequence. Therefore VCOM is the last rail to be enabled and the first to be disabled.

8.3.6.1 Kick-Back Voltage Measurement

TPS65186 can perform a voltage measurement on the VCOM pin to deter87/mine the kick-back voltage of the panel. This allows in-system calibration of VCOM. To perform a kick-back voltage measurement, follow these steps:

• Pull the WAKEUP pin and the PWRUP pin high to enable all output rails.

• Set the Hi-Z bit in the VCOM2 register. This puts the VCOM pin in a high-impedance state.

• Drive the panel with the Null waveform. Refer to E-Ink specification for detail.

• Set the ACQ bit in the VCOM2 register to 1. This starts the measurement routine.

• When the measurement is complete, the ACQC (Acquisition Complete) bit in the INT1 register is set and the nINT pin is pulled low.

• The measurement result is stored in the VCOM[8:0] bits of the VCOM1 and VCOM2 register.

The measurement result is not automatically programmed into nonvolatile memory. Changing the power-up default is described in Storing the VCOM Power-Up Default Value in Memory.

8.3.6.2 Storing the VCOM Power-Up Default Value in Memory

The power-up default value of VCOM can be user-set and programmed into nonvolatile memory. To do so, write the default value to the VCOM[8:0] bits of the VCOM1 and VCOM2 register, then set the PROG bit in VCOM2 register to 1. First, all power rails are shut down, then the VCOM[8:0] value is committed to nonvolatile memory such that it becomes the new power-up default. Once programming is complete, the PRGC bit in the INT1 register is set and the nINT pin is pulled low. To verify that the new value has been saved properly, first write the VCOM[8:0] bits to 0x000h, then pull the WAKEUP pin low. After the WAKEUP pin is pulled back high, read the VCOM[8:0] bits to verify that the new default value is correct.

Figure 21. Block Diagram of VCOM Circuit

Product Folder Links: TPS65186

Page 20

Pull WAKEUP= HIGH

Pull PWRUP= HIGH

Write HiZ = 1

Device enters ACTIVE mode All power rails are up except VCOM VCOM pin is in HiZ state

Processor drives panel with NULL waveform

Write ACQ = 1 Starts A/D conversion

Wait for ACQC interrupt

Indicates A/D conversion is complete If AVG[1:0] is <> 00, interrupt is issed after all conversions are complete and average has been calcutated.

Read result from VCOM1/2

registers

Pull PWRUP= LOW

Write HiZ = 0

Check result and decide to keep the value or repeat measurment.

Device enters STANDBY mode

Write PROG= 1

Starts the EEPROM programming cycle. Power must not be interrupted.

Wait for PRGC interrupt Indicates programming is complete

Pull WAKEUP= LOW Device enters SLEEP mode

Pull WAKEUP= HIGH Device enters STANDBY mode

Read VCOM[8:0]

Compare against written value to confirm new default has been programmed correctly.

SETUP

MEASUREMENT

PROGRAMMING

VERIFICATION

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

Feature Description (continued)

www.ti.com

Figure 22. VCOM Calibration Flow

Product Folder Links: TPS65186

Page 21

TPS65186

www.ti.com

SLVSB04A –JULY 2011–REVISED AUGUST 2015

Feature Description (continued)

8.3.7 Fault Handling and Recovery

The TPS65186 monitors input/output voltages and die temperature; the device will take action if operating conditions are outside normal limits when the following are encountered:

• Thermal Shutdown (TSD)

• Positive Boost Undervoltage (VB_UV)

• Inverting Buck-Boost Undervoltage (VN_UV)

• Input Undervoltage Lockout (UVLO)

The TPS65186 shuts down all power rails and enters STANDBY mode. Shutdown follows the order defined by DWNSEQx registers. The exception is VCOM fault witch leads to immediate shutdown of all rails. Once a fault is detected, the PWR_GOOD and nINT pins are pulled low and the corresponding interrupt bit is set in the interrupt register. Power rails cannot be re-enabled unless the interrupt bits have been cleared by reading the INT1 and INT2 register. Alternatively, toggling the WAKEUP pin also resets the interrupt bits. As the PWRUP input is edge sensitive, the host must toggle the PWRUP pin to re-enable the rails through GPIO control, that is, it must bring the PWRUP pin low before asserting it again. Alternatively rails can be re-enbled through the I2C interface.

Whenever the TPS65186 encounters undervoltage on VNEG (VNEG_UV), VPOS (VPOS_UV), VEE (VEE_UV), or VDDH (VDDH_UV), rails are not shut down but the PWR_GOOD and nINT is pulled low with the corresponding interrupt bit set. The device remains in ACTIVE mode and recovers automatically once the fault has been removed.

8.3.8 Power Good Pin

The power good pin (PWR_GOOD) is an open-drain output that is pulled high (by an external pullup resistor) when all four power rails (CP1, CP2, LDO1, LDO2) are in regulation and is pulled low if any of the rails encounters a fault or is disabled. PWR_GOOD remains low if one of the rails is not enabled by the host and only after all rails are in regulation PWR_GOOD is released to Hi-Z state (pulled up by external resistor).

8.3.9 Interrupt Pin

The interrupt pin (nINT) is an open-drain output that is pulled low whenever one or more of the INT1 or INT2 bits are set. The nINT pin is released (returns to Hi-Z state) and fault bits are cleared once the register with the set bit has been read by the host. If the fault persists, the nINT pin will be pulled low again after a maximum of 32 µs.

Interrupt events can be masked by re-setting the corresponding enable bit in the INT_EN1 and INT_EN2 register, that is, the user can determine which events cause the nINT pin to be pulled low. The status of the enable bits affects the nINT pin only and has no effect on any of the protection and monitoring circuits or the INT1/INT2 bits themselves.

Persisting faults such as thermal shutdown can cause the nINT pin to be pulled low for an extended period of time which can keep the host in a loop trying to resolve the interrupt. If this behavior is not desired, set the corresponding mask bit after receiving the interrupt and keep polling the INT1/INT2 register to see when the fault condition has disappeared. After the fault is resolved, unmask the interrupt bit again.

8.3.10 Panel Temperature Monitoring

The TPS65186 provides circuitry to bias and measure an external Negative Temperature Coefficient Resistor (NTC) to monitor the display panel temperature in a range from –10°C to 85°C with and accuracy of ±1°C from 0°C to 50°C. Temperature measurement must be triggered by the controlling host and the last temperature reading is always stored in the TMST_VALUE register. Interrupts are issued when the temperature exceeds the programmable HOT, or drops below the programmable COLD threshold, or when the temperature has changed by more than a user-defined threshold from the baseline value. Details are explained under Hot, Cold, and

Temperature-Change Interrupts.

Product Folder Links: TPS65186

Page 22

7.307k

2.25V

43k 10k NTC

ADCDigital

AGND2

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

www.ti.com

Feature Description (continued)

8.3.10.1 NTC Bias Circuit

Figure 23 shows the block diagram of the NTC bias and measurement circuit. The NTC is biased from an

internally generated 2.25-V reference voltage through an integrated 7.307-kΩ bias resistor. A 43-kΩ resistor is connected parallel to the NTC to linearize the temperature response curve. The circuit is designed to work with a nominal 10-kΩ NTC and achieves accuracy of ±1°C from 0°C to 50°C. The voltage drop across the NTC is digitized by a 10-bit SAR ADC and translated into an 8-bit two’s complement by digital per Table 1.

Table 1. ADC Output Value vs Temperature

TEMPERATURE TMST_VALUE[7:0]

< –10°C 1111 0110

–10°C 1111 0110

–9°C 1111 0111

... ...

–2°C 1111 1110 –1°C 1111 1111

0°C 0000 0000 1°C 0000 0001 2°C 0000 0010

... ...

25°C 0001 1001

... 85°C 0101 0101

> 85°C 0101 0101

Figure 23. NTC Bias and Measurement Circuit

A temperature measurement is triggered by setting the READ_THERM bit of the TMST1 register to 1.During the A/D conversion the CONV_END bit of the TMST1 register reads 0, otherwise it reads 1. At the end of the A/D conversion the EOC bit in the INT2 register is set and the temperature value is available in the TMST_VALUE register.

Product Folder Links: TPS65186

Page 23

TPS65186

www.ti.com

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.3.10.2 Hot, Cold, and Temperature-Change Interrupts

Each temperature acquisition is compared against the programmable TMST_HOT and TMST_COLD thresholds and to the baseline temperature, to determine if the display is within allowed operating temperature range and if the temperature has changed by more than a user-defined threshold since the last update. The first temperature reading after the WAKEUP pin has been pulled high automatically becomes the baseline temperature. Any subsequent reading is compared against the baseline temperature. If the difference is equal or greater than the threshold value, an interrupt is issued (DTX bit in register INT1 is set to 1) and the latest value becomes the new baseline. If the difference is less than the threshold value, no action is taken. The threshold value is defined by DT[1:0] bits in the TMST1 register and has a default value of ±2°C. In summary:

• When the temperature is equal or less than the TMST_COLD[3:0] threshold, the TMST_COLD interrupt bit of the INT1 register is set, and the nINT pin is pulled low.

• When the temperature is greater than TMST_COLD but lower then TMST_HOT, no action is taken.

• When the temperature is equal or greater than the TMST_HOT[3:0] threshold, the TMST_HOT interrupt bit of the INT1 register is set, and the nINT pin is pulled low.

• If the last temperature is different from the baseline temperature by ±2°C (default) or more, the DTX interrupt bit of the INT1 register is set. The latest temperature becomes the new baseline temperature. By default the DTX interrupt is disabled, that is, the nINT pin is not pulled low unless the DTX_EN bit was previously set high.

• If the last temperature change is less than ±2°C (default), no action is taken.

8.3.10.3 Typical Application of the Temperature Monitor

In a typical application the temperature monitor and interrupts are used in the following manner:

• After the WAKEUP pin has been pulled high, the Application Processor (AP) writes 0x80h to the TMST1 register (address 0x0Dh). This starts the temperature measurement.

• The AP waits for the EOC interrupt. Alternatively the AP can poll the CONV_END bit in register TMST1. This will notify the AP that the A/D conversion is complete and the new temperature reading is available in the TMST_VALUE register (address (0x00h).

• The AP reads the temperature value from the TMST_VALUE register (address (0x00h).

• If the temperature changes by ±2°C (default) or more from the first reading, the processor is notified by the DTX interrupt. The A/P may or may not decide to select a different set of waveforms to drive the panel.

• If the temperature is outside the allowed operating range of the panel, the processor is notified by the THOT and TCOLD interrupts, respectively. The processor may or may not decide to continue with the page update.

• When an overtemperature or undertemperature has been detected, the AP must reset the TMST_HOT_EN or TMST_COLD_EN bits, respectively, to avoid the nINT pin to be continuously pulled low. The TMST_HOT and TMST_COLD interrupt bits then must be polled continuously, to determine when the panel temperature recovers to the normal operating range. Once the temperature has recovered, the TMST_HOT_EN or TMST_COLD_EN bits must be set to 1 again and normal operation can resume.

Product Folder Links: TPS65186

Page 24

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

www.ti.com

8.4 Device Functional Modes

The TPS65186 has three modes of operation, SLEEP, STANDBY, and ACTIVE. SLEEP mode is the lowestpower mode in which all internal circuitry is turned off. In STANDBY, all power rails are shut down but the device is ready to accept commands through the I2C interface. In ACTIVE mode one or more power rails are enabled.

8.4.1 SLEEP

This is the lowest power mode of operation. All internal circuitry is turned off, registers are reset to default values and the device does not respond to I2C communications. TPS65186 enters SLEEP mode whenever WAKEUP pin is pulled low.

8.4.2 STANDBY

In STANDBY all internal support circuitry is powered up and the device is ready to accept commands through the I2C interface but none of the power rails are enabled. The device enters STANDBY mode when the WAKEUP pin is pulled high and either the PWRUP pin is pulled low or the STANDBY bit is set. The device also enters STANDBY mode if input undervoltage lockout (UVLO), positive boost undervoltage (VB_UV), or inverting buckboost undervoltage (VN_UV) is detected, thermal shutdown occurs, or the PROG bit is set (see Figure 22)

8.4.3 ACTIVE

The device is in ACTIVE mode when any of the output rails are enabled and no fault condition is present. This is the normal mode of operation while the device is powered up.

8.4.4 Mode Transitions

8.4.4.1 SLEEP → ACTIVE

WAKEUP pin is pulled high with PWRUP pin high. Rails come up in the order defined by the UPSEQx registers (OK to tie WAKEUP and PWRUP pin together).

8.4.4.2 SLEEP → STANDBY

WAKEUP pin is pulled high with PWRUP pin low. Rails will remain powered down.

8.4.4.3 STANDBY → ACTIVE

WAKEUP pin is high and PWRRUP pin is pulled high (rising edge) or the ACTIVE bit is set. Output rails will power up in the order defined by the UPSEQx registers.

8.4.4.4 ACTIVE → STANDBY

WAKEUP pin is high and STANDBY bit is set or PWRUP pin is pulled low (falling edge). Rails are shut down in the order defined by DWNSEQx registers. Device also enters STANDBY in the event of thermal shutdown (TSD), undervoltage lockout (UVLO), positive boost or inverting buck-boost undervoltage (UV), VCOM fault (VCOMF), or when the PROG bit is set (see Figure 22).

8.4.4.5 STANDBY → SLEEP

WAKEUP pin is pulled low while none of the output rails are enabled.

8.4.4.6 ACTIVE → SLEEP

WAKEUP pin is pulled low while at least one output rail is enabled. Rails are shut down in the order defined by DWNSEQx registers.

Product Folder Links: TPS65186

Page 25

SLEEP

ACTIVE

Rails = ON I2C = YES

POWER DOWN

WAKEUP = high & PWRUP= low

All rails = OFF V3P3 switch = OFF I2C = NO Registers à default

Battery removed

STANDBY

WAKEUP = high & (ACTIVE bit= 1 || PWRUP( ) )

All rails = OFF I2C = YES

WAKEUP = high &

(STANDBY bit = 1||

PWRUP(¯) || FAULT )

WAKEUP = low

WAKEUP = high & PWRUP = high

WAKEUP = low

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Device Functional Modes (continued)

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

NOTES: ||, & = logic OR, and AND. (↑), (↓) = rising edge, falling edge UVLO = Undervoltage Lockout TSD = Thermal Shutdown UV = Undervoltage FAULT = UVLO || TSD || BOOST UV || VCOM fault

Figure 24. Global State Diagram

Product Folder Links: TPS65186

Page 26

SLAVE ADDRESS W A REG ADDRESS A SLAVE ADDRESS R A DATA

REGADDR

DATA

REGADDR +n

A DATA

REGADDR +n+1

Ā P

From master to slave

From slave to master

W AP

Start

Write (low) AcknowlegeStop

R Read (high)

Ā Not Acknowlege

n bytes + ACK

SLAVE ADDRESS W A REG ADDRESS A DATA

REGADDR

DATA

SUBADDR +n

A DATA

SUBADDR +n+1

Ā P

n bytes + ACK

S A6 A5 A4 A3 A2 A1 A0 A S7 S6 S5 S4 S3 S2 S1 S0 A D7 D6 D5 D4 D3 D2 D1 D0 A P

S AStart Condition Acknowledge A6 A0... Device Address

R/nW

Read / not Write

S7 S0... Sub-Address

D7 D0... Data

P Stop Condition

R/nW

Slave Address + R/nW Reg Address Data

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

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8.5 Programming

8.5.1 I2C Bus Operation

The TPS65186 hosts a slave I2C interface that supports data rates up to 400 kbit/s and auto-increment addressing and is compliant to I2C standard 3.0.

Figure 25. Subaddress in I2C Transmission

The I2C Bus is a communications link between a controller and a series of slave terminals. The link is established using a two-wire bus consisting of a serial clock signal (SCL) and a serial data signal (SDA). The serial clock is sourced from the controller in all cases where the serial data line is bidirectional for data communication between the controller and the slave terminals. Each device has an open drain output to transmit data on the serial data line. An external pullup resistor must be placed on the serial data line to pull the drain output high during data transmission.

Data transmission is initiated with a start bit from the controller as shown in Figure 27. The start condition is recognized when the SDA line transitions from high to low during the high portion of the SCL signal. Upon reception of a start bit, the device will receive serial data on the SDA input and check for valid address and control information. If the appropriate slave address bits are set for the device, then the device will issue an acknowledge pulse and prepare to receive the register address. Depending on the R/nW bit, the next byte received from the master is written to the addressed register (R/nW = 0) or the device responds with 8-bit data from the register (R/nW = 1). Data transmission is completed by either the reception of a stop condition or the reception of the data word sent to the device. A stop condition is recognized as a low to high transition of the SDA input during the high portion of the SCL signal. All other transitions of the SDA line must occur during the low portion of the SCL signal. An acknowledge is issued after the reception of valid address, sub-address and data words. The I2C interfaces will auto-sequence through register addresses, so that multiple data words can be sent for a given I2C transmission. See Figure 26 and Figure 27 for details.

TOP: Master writes data to slave. BOTTOM: Master reads data from slave.

Figure 26. I2C Data Protocol

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1-7 8 9 1-7 8 9 1-7 8 9

ADDRESS R/W ACK DATA ACK DATA

ACK/

nACK

STOPSTART

SDA

SCL

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SLVSB04A –JULY 2011–REVISED AUGUST 2015

Programming (continued)

Figure 27. I2C Start/Stop/Acknowledge Protocol

8.6 Register Maps

0 0x00 TMST_VALUE Thermistor value read by ADC 1 0x01 ENABLE Enable/disable bits for regulators 2 0x02 VADJ VPOS/VNEG voltage adjustment 3 0x03 VCOM1 Voltage settings for VCOM 4 0x04 VCOM2 Voltage settings for VCOM + control 5 0x05 INT_EN1 Interrupt enable group1 6 0x06 INT_EN2 Interrupt enable group2 7 0x07 INT1 Interrupt group1 8 0x08 INT2 Interrupt group2

9 0x09 UPSEQ0 Power-up strobe assignment 10 0x0A UPSEQ1 Power-up sequence delay times 11 0x0B DWNSEQ0 Power-down strobe assignment 12 0x0C DWNSEQ1 Power-down sequence delay times 13 0x0D TMST1 Thermistor configuration 14 0x0E TMST2 Thermistor hot temp set 15 0x0F PG Power good status each rails 16 0x10 REVID Device revision ID information

TPS65186

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TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.6.1 Thermistor Readout (TMST_VALUE)

Address – 0x00h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME TMST_VALUE[7:0] READ/WRITE R R R R R R R R

RESET VALUE N/A N/A N/A N/A N/A N/A N/A N/A

FIELD NAME BIT DEFINITION

Temperature read-out 1111 0110 – < -10°C 1111 0110 – -10°C 1111 0111 – -9°C ... 1111 1110 – -2°C 1111 1111 – -1 °C

TMST_VALUE[7:0] 0000 0000 – 0 °C

0000 0001 – 1°C 0000 0010 – 2°C ... 0001 1001 – 25°C ... 0101 0101 – 85°C 0101 0101 – > 85°C

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8.6.2 Enable (ENABLE)

Address – 0x01h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME ACTIVE STANDBY V3P3_EN VCOM_EN VDDH_EN VPOS_EN VEE_EN VNEG_EN READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 0 0 0 0 0 0 0 0

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

FIELD NAME BIT DEFINITION

STANDBY to ACTIVE transition bit

ACTIVE

STANDBY

V3P3_EN 1 – switch is ON

VCOM_EN 1 – enabled

VDDH_EN 1 – enabled

VPOS_EN

VEE_EN 1 – enabled

VNEG_EN

(1) Enable bits always reflect actual status of the corresponding rail.

1 – Transition from STANDBY to ACTIVE mode. Rails power up as defined by UPSEQx registers 0 – no effect NOTE: After transition bit is cleared automatically STANDBY to ACTIVE transition bit 1 – Transition from STANDBY to ACTIVE mode. Rails power up as defined by DWNSEQx registers 0 – no effect NOTE: After transition bit is cleared automatically. STANDBY bit has priority over AVTIVE. VIN3P3 to V3P3 switch enable

0 – switch is OFF VCOM buffer enable

0 – disabled VDDH charge pump enable

0 – disabled VPOS LDO regulator enable 1 – enabled 0 – disabled NOTE: VPOS cannot be enabled before VNEG is enabled. VEE charge pump enable

0 – disabled VNEG LDO regulator enable 1 – enabled 0 – disabled NOTE: When VNEG is disabled VPOS will also be disabled.

(1)

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TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.6.3 Voltage Adjustment Register (VADJ)

Address – 0x02h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME not used not used not used not used not used VSET[2:0] READ/WRITE R/W R/W R/W R/W R R/W R/W R/W

RESET VALUE 0 0 1 0 0 0

FIELD NAME BIT DEFINITION

not used N/A not used N/A not used N/A not used N/A not used N/A

VPOS and VNEG voltage setting 000 - not valid 001 - not valid 010 - not valid

VSET[2:0] 011 - ±15.000 V

100 - ±14.750 V 101 - ±14.500 V 110 - ±14.250 V 111 - reserved

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8.6.4 VCOM 1 (VCOM1)

Address – 0x03h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME VCOM [7:0] READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 0

FIELD NAME BIT DEFINITION

VCOM[7:0] VCOM voltage, least significant byte. See VCOM 2 (VCOM2) for details.

1 1 0 1

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8.6.5 VCOM 2 (VCOM2)

Address – 0x04h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME ACQ PROG HiZ AVG[1:0] not used not used VCOM[8] READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 0 0 0 0 0 1 0 0

FIELD NAME BIT DEFINITION

ACQ

PROG

HiZ 1 – VCOM pin is placed into hi-impedance state to allow VCOM measurement

AVG[1:0]

not used N/A not used N/A

VCOM[8:0]

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

Kick-back voltage acquisition bit 1 – starts kick-back voltage measurement routine 0 – no effect NOTE: After measurement is complete bit is cleared automatically and measurement result is

reflected in VCOM[8:0] bits. VCOM programming bit 1 – VCOM[8:0] value is committed to nonvolatile memory and becomes new power-up default 0 – no effect NOTE: After programming bit is cleared automatically and TPS65186 will enter STANDBY mode. VCOM HiZ bit

0 – VCOM amplifier is connected to VCOM pin Number of acquisitions that is averaged to a single kick-back voltage measurement 00 – 1x 01 – 2x 10 – 4x 11 – 8x NOTE: When the ACQ bit is set, the state machine repeat the A/D conversion of the kick-back

voltage AVD[1:0] times and returns a single, averaged, value to VCOM[8:0]

VCOM voltage adjustment VCOM = VCOM[8:0] x -10 mV in the range from 0 mV to –5.110 V 0x000h – 0 0000 0000 – –0 mV 0x001h – 0 0000 0001 – –10 mV 0x002h – 0 0000 0010 – –20 mV ... 0x07Dh - 0 0111 1101 – –1250 mV ... 0x1FEh – 1 1111 1110 – –5100 mV 0x1FFh – 1 1111 1111 – –5110 mV

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TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.6.6 Interrupt Enable 1 (INT_EN1)

Address – 0x05h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME DTX_EN TSD_EN HOT_EN UVLO_EN ACQC_EN PRGC_EN

READ/WRITE R R/W R/W R/W R/W R/W R R

RESET VALUE 0 1 1 1 1 1 1 1

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TMST_HOT TMST_COLD

_EN _EN

FIELD NAME BIT DEFINITION

Panel temperature-change interrupt enable

DTX_EN 1 – enabled

0 – disabled Thermal shutdown interrupt enable

TSD_EN 1 – enabled

0 – disabled Thermal shutdown early warning enable

HOT_EN 1 – enabled

0 – disabled Thermistor hot interrupt enable

TMST_HOT_EN 1 – enabled

0 – disabled Thermistor cold interrupt enable

TMST_COLD_EN 1 – enabled

0 – disabled VIN undervoltage detect interrupt enable

UVLO_EN 1 – enabled

0 – disabled VCOM acquisition complete interrupt enable

ACQC_EN 1 – enabled

0 – disabled VCOM programming complete interrupt enable

PRGC_EN 1 – enabled

0 – disabled

(1) Enabled means nINT pin is pulled low when interrupt occurs.

Disabled means nINT pin is not pulled low when interrupt occurs.

(1)

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8.6.7 Interrupt Enable 2 (INT_EN2)

Address – 0x06h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME VBUVEN VDDHUVEN VNUV_EN VPOSUVEN VEEUVEN VCOMFEN VNEGUVEN EOCEN

READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 1 1 1 1 1 1 1 1

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

FIELD NAME BIT DEFINITION

Positive boost converter undervoltage detect interrupt enable

VBUVEN 1 – enabled

0 – disabled VDDH undervoltage detect interrupt enable

VDDHUVEN 1 – enabled

0 – disabled Inverting buck-boost converter undervoltage detect interrupt enable

VNUVEN 1 – enabled

0 – disabled VPOS undervoltage detect interrupt enable

VPOSUVEN 1 – enabled

0 – disabled VEE undervoltage detect interrupt enable

VEEUVEN 1 – enabled

0 – disabled VCOM FAULT interrupt enable

VCOMFEN 1 – enabled

0 – disabled VNEG undervoltage detect interrupt enable

VNEGUVEN 1 – enabled

0 – disabled Temperature ADC end of conversion interrupt enable

EOCEN 1 – enabled

0 – disabled

(1) Enabled means nINT pin is pulled low when interrupt occurs.

Disabled means nINT pin is not pulled low when interrupt occurs.

(1)

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TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.6.8 Interrupt 1 (INT1)

Address – 0x07h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME DTX TSD HOT TMST_HOT TMST_COLD UVLO ACQC PRGC

READ/WRITE R R R R R R R R

RESET VALUE 0 N/A N/A N/A N/A N/A 0 0

FIELD NAME BIT DEFINITION

Panel temperature-change interrupt

DTX 1 – temperature has changed by 3 deg or more over previous reading

0 – no significance Thermal shutdown interrupt

TSD 1 – chip is in overtemperature shutdown

0 – no fault Thermal shutdown early warning

HOT 1 – chip is approaching overtemperature shutdown

0 – no fault Thermistor hot interrupt

TMST_HOT 1 – thermistor temperature is equal or greater than TMST_HOT threshold

0 – no fault Thermistor cold interrupt

TMST_COLD 1 – thermistor temperature is equal or less than TMST_COLD threshold

0 – no fault VIN undervoltage detect interrupt

UVLO 1 – input voltage is below UVLO threshold

0 – no fault VCOM acquisition complete

ACQC 1 – VCOM measurement is compete

0 – no significance VCOM programming complete

PRGC 1 – VCOM programming is complete

0 – no significance

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8.6.9 Interrupt 2 (INT2)

Address – 0x08h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME VB_UV VDDH_UV VN_UV VPOS_UV VEE_UV VCOMF VNEG_UV EOC

READ/WRITE R R R R R R R R

RESET VALUE N/A N/A N/A N/A N/A N/A N/A N/A

FIELD NAME BIT DEFINITION

VB_UV 1 – under-voltage on DCDC1 detected

VDDH_UV 1 – undervoltage on VDDH charge pump detected

VN_UV 1 – undervoltage on DCDC2 detected

VPOS_UV 1 – undervoltage on LDO1(VPOS) detected

VEE_UV 1 – undervoltage on VEE charge pump detected

VCOMF 1 – fault on VCOM detected (VCOM is outside normal operating range)

VNEG_UV 1 – undervoltage on LDO2(VNEG) detected

EOC 1 – ADC conversion is complete (temperature acquisition is complete)

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

Positive boost converter undervoltage detect interrupt

0 – no fault VDDH undervoltage detect interrupt

0 – no fault Inverting buck-boost converter undervoltage detect interrupt

0 – no fault VPOS undervoltage detect interrupt

0 – no fault VEE undervoltage detect interrupt

0 – no fault VCOM fault detection

0 – no fault VNEG undervoltage detect interrupt

0 – no fault ADC end of conversion interrupt

0 – no significance

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VNEG

VEE

VPOS

VDDH

6ms 6ms 48ms6ms 6ms 6ms

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.6.10 Power Up Sequence Register 0 (UPSEQ0)

Address – 0x09h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME VDDH_UP[1:0] VPOS_UP[1:0] VEE_UP[1:0] VNEG_UP[1:0]

READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 1

FIELD NAME BIT DEFINITION

VDDH power-up order 00 – power up on STROBE1

VDDH_UP[1:0] 01 – power up on STROBE2

10 – power up on STROBE3 11 – power up on STROBE4 VPOS power-up order 00 – power up on STROBE1

VPOS_UP[1:0] 01 – power up on STROBE2

10 – power up on STROBE3 11 – power up on STROBE4 VEE power-up order 00 – power up on STROBE1

VEE_UP[1:0] 01 – power up on STROBE2

10 – power up on STROBE3 11 – power up on STROBE4 VNEG power-up order 00 – power up on STROBE1

VNEG_UP[1:0] 01 – power up on STROBE2

10 – power up on STROBE3 11 – power up on STROBE4

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Figure 28. Default Power-Up/Power-Down Sequence

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8.6.11 Power Up Sequence Register 1 (UPSEQ1)

Address – 0x0Ah

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME UDLY4[1:0] UDLY3[1:0] UDLY2[1:0] UDLY1[1:0]

READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 0

FIELD NAME BIT DEFINITION

DLY4 delay time set; defines the delay time from STROBE3 to STROBE4 during power up. 00 – 3 ms

UDLY4[1:0] 01 – 6 ms

10 – 9 ms 11 – 12 ms DLY3 delay time set; defines the delay time from STROBE2 to STROBE3 during power up. 00 – 3 ms

UDLY3[1:0] 01 – 6 ms

10 – 9 ms 11 – 12 ms DLY2 delay time set; defines the delay time from STROBE1 to STROBE2 during power up. 00 – 3 ms

UDLY2[1:0] 01 – 6 ms

10 – 9 ms 11 – 12 ms DLY1 delay time set; defines the delay time from VN_PG high to STROBE1 during power up. 00 – 3 ms

UDLY1[1:0] 01 – 6 ms

10 – 9 ms 11 – 12 ms

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

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TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.6.12 Power Down Sequence Register 0 (DWNSEQ0)

Address – 0x0Bh

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME VDDH_DWN[1:0] VPOS_DWN[1:0] VEE_DWN[1:0] VNEG_DWN[1:0]

READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 0

FIELD NAME BIT DEFINITION

VDDH power-down order 00 – power down on STROBE1

VDDH_DWN[1:0] 01 – power down on STROBE2

10 – power down on STROBE3 11 – power down on STROBE4 VPOS power-down order 00 – power down on STROBE1

VPOS_DWN[1:0] 01 – power down on STROBE2

10 – power down on STROBE3 11 – power down on STROBE4 VEE power-down order 00 – power down on STROBE1

VEE_DWN[1:0] 01 – power down on STROBE2

10 – power down on STROBE3 11 – power down on STROBE4 VNEG power-down order 00 – power down on STROBE1

VNEG_DWN[1:0] 01 – power down on STROBE2

10 – power down on STROBE3 11 – power down on STROBE4

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8.6.13 Power Down Sequence Register 1 (DWNSEQ1)

Address – 0x0Ch

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME DDLY4[1:0] DDLY3[1:0] DDLY2[1:0] DDLY1 DFCTR

READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 1

FIELD NAME BIT DEFINITION

DLY4 delay time set; defines the delay time from STROBE3 to STROBE4 during power down. 00 – 6 ms

DDLY4[1:0] 01 – 12 ms

10 – 24 ms 11 – 48 ms DLY3 delay time set; defines the delay time from STROBE2 to STROBE3 during power down. 00 – 6 ms

DDLY3[1:0] 01 – 12 ms

10 – 24 ms 11 – 4 8ms DLY2 delay time set; defines the delay time from STROBE1 to STROBE2 during power down. 00 – 6 ms

DDLY2[1:0] 01 – 12 ms

10 – 24 ms 11 – 48 ms DLY2 delay time set; defines the delay time from WAKEUP low to STROBE1 during power down.

DDLY1 0 – 3 ms

1 – 6 ms At power-down delay time DLY2[1:0], DLY3[1:0], DLY4[1:0] are multiplied with DFCTR[1:0]

DFCTR 0 – 1×

1 – 16×

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

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TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.6.14 Thermistor Register 1 (TMST1)

Address – 0x0Dh

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME READ_THERM not used CONV_END not used not used not used DT[1:0]

READ/WRITE R/W R/W R R/W R/W R/W R/W R/W

RESET VALUE 0 0 1 0 0 0 0 0

FIELD NAME BIT DEFINITION

Read thermistor value

READ_THERM

not used N/A

CONV_END 1 – conversion is finished

not used N/A not used N/A

DT[1:0]

1 – initiates temperature acquisition 0 – no effect NOTE: Bit is self-cleared after acquisition is completed

ADC conversion done flag

0 – conversion is not finished

Panel temperature-change interrupt threshold 00 – 2°C 01 – 3°C 10 – 4°C 11 – 5°C DTX interrupt is issued when difference between most recent temperature reading and baseline

temperature is equal to or greater than threshold value. See Hot, Cold, and Temperature-Change

Interrupts for details.

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8.6.15 Thermistor Register 2 (TMST2)

Address – 0x0Eh

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME TMST_COLD[3:0] TMST_HOT[3:0]

READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 0 1 1 1 1 0 0 0

FIELD NAME BIT DEFINITION

Thermistor COLD threshold 0000 – -7°C 0001 – -6°C 0010 – -5°C 0011 – -4°C 0100 – -3°C 0101 – -2°C 0110 – -1°C

TMST_COLD [3:0]

TMST_HOT [3:0]

0111 – 0°C 1000 – 1°C 1001 – 2°C 1010 – 3°C 1011 – 4°C 1100 – 5°C 1101 – 6°C 1110 – 7°C 1111 – 8°C NOTE: An interrupt is issued when thermistor temperature is equal or less than COLD threshold Thermistor HOT threshold 0000 – 42°C 0001 – 43°C 0010 – 44°C 0011 – 45°C 0100 – 46°C 0101 – 47°C 0110 – 48°C 0111 – 49°C 1000 – 50°C 1001 – 51°C 1010 – 52°C 1011 – 53°C 1100 – 54°C 1101 – 55°C 1110 – 56°C 1111 – 57°C NOTE: An interrupt is issued when thermistor temperature is equal or greater than HOT threshold

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

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TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

8.6.16 Power Good Status (PG)

Address – 0x0Fh

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME VB_PG VDDH_PG VN_PG VPOS_PG VEE_PG not used VNEG_PG not used

READ/WRITE R R R R R R R R

RESET VALUE 0 0 0 0 0 0 0 0

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FIELD NAME BIT DEFINITION

Positive boost converter power good

VB_PG 1 – DCDC1 is in regulation

0 – DCDC1 is not in regulation or turned off VDDH power good

VDDH_PG 1 – VDDH charge pump is in regulation

0 – VDDH charge pump is not in regulation or turned off Inverting buck-boost power good

VN_PG 1 – DCDC2 is in regulation

0 – DCDC2 is not in regulation or turned off VPOS power good

VPOS_PG 1 – LDO1(VPOS) is in regulation

0 – LDO1(VPOS) is not in regulation or turned off VEE power good

VEE_PG 1 – VEE charge pump is in regulation

0 – VEE charge pump is not in regulation or turned off

not used N/A

VNEG power good

VNEG_PG 1 – LDO2(VNEG) is in regulation

0 – LDO2(VNEG) is not in regulation or turned off

not used N/A

(1) PG pin is pulled hi (Hi-Z state) when VDDH_PG = VPOS_PG = VEE_PG = VNEG_PG = 1

(1)

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8.6.17 Revision and Version Control (REVID)

Address – 0x10h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME REVID[7:0]

READ/WRITE R R R R R R R R

RESET VALUE 0 1 0 0 0

FIELD NAME BIT DEFINITION

REVID[7:6] MJREV REVID[5:4] MNREV REVID[3:0] VERSION

0100 0101 - TPS65186 1p0

REVID [7:0] 0101 0101 – TPS65186 1p1

0110 0101 – TPS65186 1p2

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

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VIN

I/ O Control

From Input Supply

(3. 0 V-6.0 V)

TEMP

SENSOR

DCDC2

VN_SW

DCDC1

VB_SW

From Input Supply

(3.0 V-6. 0 V)

VDDH_D VDDH_DRV VDDH_FB

POSITIVE

CHARGE

PUMP

VPOS

LDO1

VEE_D VEE_DRV VEE_FB

NEGATIVE

CHARGE

PUMP

VCOM

VCOM_PANEL

VNEG

LDO2

VCOM

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

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9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

9.1 Application Information

The TPS65186 is used to power display screens in E-book applications, specifically E-Ink Vizplex display, by connecting the screen to the positive and negative charge pump, LDOs 1 and 2, and VCOM rails. The display screens size that can be supported up to 9.7 inches.

9.2 Typical Application

9.2.1 Design Requirements

For this design example, use the parameters listed in Table 2 as the input parameters.

Table 2. Design Parameters

VOLTAGE SEQUENCE (STROBE)

VNEG (LDO2) –15 V 1 VEE (Charge pump 2) –20 V 2 VPOS (LDO1) 15 V 3 VDDH (Charge pump 1) 22 V 4

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100

0 2 4 6 8 10 12

Output C urrent [mA ]

Efficiency [%]

VIN=5 V

VIN=3 .5V

100

0 2 4 6 8 10 12

Output C urrent [mA ]

Efficiency [%]

VIN= 5V

VIN= 3.5

100

0 25 50 7 5 1 00 1 25 15 0 1 75

Outpu t Curre nt [m A]

Efficiency [%]

VIN= 3.5

VIN= 5V

100

0 25 50 75 100 1 25 150 1 75

Output C urrent [m A]

Efficiency [% ]

VIN= 3.5

VIN= 5V

TPS65186

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SLVSB04A –JULY 2011–REVISED AUGUST 2015

9.2.2 Detailed Design Procedure Table 3. Recommended External Components

PART NUMBER VALUE SIZE MANUFACTURER INDUCTORS

LQH44PN4R7MP0 4.7 µH 4 mm × 4 mm × 1.65 mm Murata NR4018T4R7M 4.7 µH 4 mm × 4 mm × 1.8 mm Taiyo Yuden VLS252015ET-2R2M 2.2 µH 2 mm × 2.5 mm × 1.5 mm TDK NR4012T2R2M 2.2 µH 4 mm × 4 mm × 1.2 mm Taiyo Yuden

CAPACITORS

GRM21BC81E475KA12L 4.7 µF, 25 V, X6S 805 Murata GRM32ER71H475KA88L 4.7 µF, 50 V, X7R 1210 Murata All other capacitors X5R or better — —

DIODES

BAS3010 — SOD-323 Infineon MBR130T1 — SOD-123 ON-Semi BAV99 — SOT-23 Fairchild

THERMISTOR

NCP18XH103F03RB 10 kΩ 603 Murata

9.2.3 Application Curves

T = 25°C T = 25°C

Figure 29. VN DCDC Efficiency Figure 30. VB DCDC Efficiency

T = 25°C T = 25°C

Figure 31. VEE Charge Pump Efficiency Figure 32. VDDH Charge Pump Efficiency

Product Folder Links: TPS65186

Page 46

TPS65186

SLVSB04A –JULY 2011–REVISED AUGUST 2015

www.ti.com

10 Power Supply Recommendations

The device is designed to operate with an input voltage supply range from 3 V to 6 V. This input supply can be from an externally regulated supply. If the input supply is located more than a few inches from the TPS65186, additional bulk capacitance may be required in addition to the ceramic bypass capacitors. An electrolytic capacitor with a value of 10 µF is a typical choice.

11 Layout

11.1 Layout Guidelines

1. PBKG (Die substrate) must connect to VN (–16 V) with short, wide trace. Wide copper trace will improve heat dissipation.

2. PowerPad is internally connected to PBKG and must not be connected to ground, but connected to VN with a short wide copper trace.

3. Inductor traces must be kept on the PCB top layer free of any vias.

4. Feedback traces must be routed away from any potential noise source to avoid coupling.

5. Output caps must be placed immediately at output pin.

6. Vin pins must be bypassed to ground with low ESR ceramic bypass capacitors.

11.2 Layout Example

Figure 33. Layout Diagram

Product Folder Links: TPS65186

Page 47

TPS65186

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SLVSB04A –JULY 2011–REVISED AUGUST 2015

12 Device and Documentation Support

12.1 Device Support

12.1.1 Third-Party Products Disclaimer

TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES NOT CONSTITUTE AN ENDORSEMENT REGARDING THE SUITABILITY OF SUCH PRODUCTS OR SERVICES OR A WARRANTY, REPRESENTATION OR ENDORSEMENT OF SUCH PRODUCTS OR SERVICES, EITHER ALONE OR IN COMBINATION WITH ANY TI PRODUCT OR SERVICE.

12.2 Community Resources

The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of

Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration

among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers.

Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and

contact information for technical support.

12.3 Trademarks

OMAP, E2E are trademarks of Texas Instruments. Vizplex is a trademark of E Ink Corporation. E Ink is a registered trademark of E Ink Corporation. EPSON is a registered trademark of Seiko Epson Corporation.

12.4 Electrostatic Discharge Caution

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

12.5 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.

13 Mechanical, Packaging, and Orderable Information

The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation.

Product Folder Links: TPS65186

Page 48

PACKAGE OPTION ADDENDUM

www.ti.com

10-Dec-2020

PACKAGING INFORMATION

Orderable Device Status

TPS65186RGZR ACTIVE VQFN RGZ 48 2500 RoHS & Green NIPDAU Level-3-260C-168 HR -40 to 85 TPS65186 TPS65186RGZT ACTIVE VQFN RGZ 48 250 RoHS & Green NIPDAU Level-3-260C-168 HR -40 to 85 TPS65186

(1)

The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device.

Package Type Package

(1)

Drawing

Pins Package

Qty

Eco Plan

(2)

Lead finish/

Ball material

(6)

MSL Peak Temp

(3)

Op Temp (°C) Device Marking

(4/5)

(2)

RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance

do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free".

RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based

flame retardants must also meet the <=1000ppm threshold requirement.

(3)

MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

(4)

There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.

(5)

Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation

of the previous line and the two combined represent the entire Device Marking for that device.

(6)

Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two

lines if the finish value exceeds the maximum column width.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Samples

Addendum-Page 1

Page 49

PACKAGE OPTION ADDENDUM

www.ti.com

10-Dec-2020

Addendum-Page 2

Page 50

PACKAGE MATERIALS INFORMATION

www.ti.com 25-Mar-2015

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device Package

TPS65186RGZR VQFN RGZ 48 2500 330.0 16.4 7.3 7.3 1.1 12.0 16.0 Q2 TPS65186RGZT VQFN RGZ 48 250 180.0 16.4 7.3 7.3 1.1 12.0 16.0 Q2

Type

Package

Drawing

Pins SPQ Reel

Diameter

(mm)

Reel

Width

W1 (mm)

(mm)B0(mm)K0(mm)P1(mm)W(mm)

Pin1

Quadrant

Pack Materials-Page 1

Page 51

PACKAGE MATERIALS INFORMATION

www.ti.com 25-Mar-2015

*All dimensions are nominal

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

TPS65186RGZR VQFN RGZ 48 2500 367.0 367.0 38.0 TPS65186RGZT VQFN RGZ 48 250 210.0 185.0 35.0

Pack Materials-Page 2

Page 52

GENERIC PACKAGE VIEW

VQFN - 1 mm max heightRGZ 48

7 x 7, 0.5 mm pitch

PLASTIC QUADFLAT PACK- NO LEAD

Images above are just a representation of the package family, actual package may vary. Refer to the product data sheet for package details.

www.ti.com

4224671/A

Page 53

PACKAGE OUTLINE

PIN 1 INDEX AREA

1 MAX

SCALE 2.000

7.15

6.85

7.15

6.85

VQFN - 1 mm max heightRGZ0048B

PLASTIC QUAD FLATPACK - NO LEAD

SEATING PLANE

0.05

0.00

44X 0.5

5.5

PIN 1 ID

(OPTIONAL)

2X 5.5

4.1 0.1

SYMM

48X

SYMM

0.5

0.3

0.08 C

EXPOSED THERMAL PAD

0.30

48X

0.18

0.1 C B A

0.05

(0.2) TYP

4218795/B 02/2017

NOTES:

1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M.

2. This drawing is subject to change without notice.

3. The package thermal pad must be soldered to the printed circuit board for thermal and mechanical performance.

www.ti.com

Page 54

48X (0.24)

44X (0.5)

48X (0.6)

SYMM

EXAMPLE BOARD LAYOUT

VQFN - 1 mm max heightRGZ0048B

PLASTIC QUAD FLATPACK - NO LEAD

( 4.1)

(1.115) TYP

(0.685)

TYP

(1.115)

TYP

(0.685)

TYP

( 0.2) TYP

VIA

(R0.05)

TYP

0.07 MAX

ALL AROUND

EXPOSED METAL

SYMM

(6.8)

LAND PATTERN EXAMPLE

EXPOSED METAL SHOWN

SCALE:12X

ALL AROUND

METAL

EXPOSED METAL

SOLDER MASK OPENING

(6.8)

0.07 MIN

SOLDER MASK OPENING

METAL UNDER SOLDER MASK

NON SOLDER MASK

DEFINED

(PREFERRED)

SOLDER MASK

DEFINED

SOLDER MASK DETAILS

4218795/B 02/2017

NOTES: (continued)

4. This package is designed to be soldered to a thermal pad on the board. For more information, see Texas Instruments literature number SLUA271 (www.ti.com/lit/slua271).

5. Vias are optional depending on application, refer to device data sheet. If any vias are implemented, refer to their locations shown on this view. It is recommended that vias under paste be filled, plugged or tented.

www.ti.com

Page 55

48X (0.6)

48X (0.24)

EXAMPLE STENCIL DESIGN

VQFN - 1 mm max heightRGZ0048B

PLASTIC QUAD FLATPACK - NO LEAD

(1.37)

TYP

44X (0.5)

(R0.05) TYP

METAL TYP

SYMM

(6.8)

SOLDER PASTE EXAMPLE

BASED ON 0.125 mm THICK STENCIL

EXPOSED PAD 49

73% PRINTED SOLDER COVERAGE BY AREA UNDER PACKAGE

SCALE:12X

(1.37)

(

TYP

(6.8)

1.17)

4218795/B 02/2017

NOTES: (continued)

6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations.

www.ti.com

Page 56

IMPORTANT NOTICE AND DISCLAIMER

TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS.

These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources.

TI’s products are provided subject to TI’s Terms of Sale (www.ti.com/legal/termsofsale.html) or other applicable terms available either on

ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable

warranties or warranty disclaimers for TI products.

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Datasheet TPS65186 Datasheet (Texas Instruments)

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Features 2 Applications

3 Description

Table of Contents

4 Revision History

5 Description (continued)

6 Pin Configuration and Functions

7 Specifications

7.1 Absolute Maximum Ratings

7.2 ESD Ratings

7.3 Recommended Operating Conditions

7.4 Thermal Information

7.5 Electrical Characteristics

7.6 Timing Requirements: Data Transmission

7.7 Typical Characteristics

8 Detailed Description

8.1 Overview

8.2 Functional Block Diagram

8.3 Feature Description

8.3.1 Wake-Up and Power-Up Sequencing

8.3.2 Dependencies Between Rails

8.3.3 Soft Start

8.3.4 VPOS/VNEG Supply Tracking

8.3.5 V3P3 Power Switch

8.3.6 VCOM Adjustment

8.3.6.1 Kick-Back Voltage Measurement

8.3.6.2 Storing the VCOM Power-Up Default Value in Memory

8.3.7 Fault Handling and Recovery

8.3.8 Power Good Pin

8.3.9 Interrupt Pin

8.3.10 Panel Temperature Monitoring

8.3.10.1 NTC Bias Circuit

8.3.10.2 Hot, Cold, and Temperature-Change Interrupts

8.3.10.3 Typical Application of the Temperature Monitor

8.4 Device Functional Modes

8.4.1 SLEEP

8.4.2 STANDBY

8.4.3 ACTIVE

8.4.4 Mode Transitions

8.4.4.1 SLEEP → ACTIVE

8.4.4.2 SLEEP → STANDBY

8.4.4.3 STANDBY → ACTIVE

8.4.4.4 ACTIVE → STANDBY

8.4.4.5 STANDBY → SLEEP

8.4.4.6 ACTIVE → SLEEP

8.5 Programming

8.5.1 I2C Bus Operation

8.6 Register Maps

8.6.1 Thermistor Readout (TMST_VALUE)

8.6.2 Enable (ENABLE)

8.6.3 Voltage Adjustment Register (VADJ)

8.6.4 VCOM 1 (VCOM1)

8.6.5 VCOM 2 (VCOM2)

8.6.6 Interrupt Enable 1 (INT_EN1)

8.6.7 Interrupt Enable 2 (INT_EN2)

8.6.8 Interrupt 1 (INT1)

8.6.9 Interrupt 2 (INT2)

8.6.10 Power Up Sequence Register 0 (UPSEQ0)

8.6.11 Power Up Sequence Register 1 (UPSEQ1)

8.6.12 Power Down Sequence Register 0 (DWNSEQ0)

8.6.13 Power Down Sequence Register 1 (DWNSEQ1)

8.6.14 Thermistor Register 1 (TMST1)

8.6.15 Thermistor Register 2 (TMST2)

8.6.16 Power Good Status (PG)

8.6.17 Revision and Version Control (REVID)

9 Application and Implementation

9.1 Application Information

9.2 Typical Application

9.2.1 Design Requirements

9.2.2 Detailed Design Procedure Table 3. Recommended External Components

9.2.3 Application Curves

10 Power Supply Recommendations

11 Layout

11.1 Layout Guidelines

11.2 Layout Example

12 Device and Documentation Support

12.1 Device Support