TEXAS INSTRUMENTS TPS65140, TPS65145 Technical data

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Vin

Vo1

Vo3

Power Good

Vo2

Vo4

3.3 V

Boost

Converter

Positive Charge

Pump

Negative

Charge Pump

Power Good

Linear Regulator

Controller

TPS65140/45

Up to 15 V / 400 mA

Up to 30 V / 20 mA

Up to −12 V / 20 mA

2.7 V to 5.8 V

查询TPS65140供应商

SLVS497B – SEPTEMBER 2003 – REVISED MARCH 2004

TRIPLE OUTPUT LCD SUPPLY WITH LINEAR REGULATOR AND POWER GOOD

FEATURES DESCRIPTION

• 2.7-V to 5.8-V Input Voltage Range

• 1.6-MHz Fixed Switching Frequency

• 3 Independent Adjustable Outputs

• Main Output up to 15 V With <1% Typical

Output Voltage Accuracy

• Negative Output Voltage Down to -12 V/20 mA

• Positive Output Voltage up to 30 V/20 mA

• Auxiliary 3.3-V Linear Regulator Controller

• Internal Soft Start

• Internal Power-On Sequencing

• Fault Detection of all Outputs

• Thermal Shutdown

• System Power Good

• Available in TSSOP-24 and QFN-24

PowerPAD™ Packages

APPLICATIONS

• TFT LCD Displays for Notebooks

• TFT LCD Displays for Monitors

• Portable DVD Players

• Tablet PCs

• Car Navigation Systems

• Industrial Displays

The TPS65140/145 offers a compact and small
power supply solution to provide all three voltages
required by thin film transistor (TFT) LCD displays.
The auxiliary linear regulator controller can be used
to generate a 3.3-V logic power rail for systems
powered by a 5-V supply rail only.

The main output Vo1 is a 1.6-MHz fixed frequency
PWM boost converter providing the source drive
voltage for the LCD display. The device is available in
two versions with different internal switch current
limits to allow the use of a smaller external inductor
when lower output power is required. The TPS65140
has a typical switch current limit of 2.3 A and the
TPS65145 has a typical switch current limit of 1.37 A.
A fully integrated adjustable charge pump
doubler/tripler provides the positive LCD gate drive
voltage. An externally adjustable negative charge
pump provides the negative gate drive voltage. Due
to the high 1.6-MHz switching frequency of the
charge pumps, inexpensive and small 220-nF capaci­tors can be used.

Additionally, the TPS65140/145 has a system power
good output to indicate when all supply rails are
acceptable. For LCD panels powered by 5 V, only the
TPS65140/145 has a linear regulator controller using
an external transistor to provide a regulated 3.3 V
output for the digital circuits. For maximum safety, the
entire device goes into shutdown as soon as one of
the outputs is out of regulation. The device can be
enabled again by toggling the input or the enable
(EN) pin to GND.

TPS65140
TPS65145

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

Copyright © 2003–2004, Texas Instruments Incorporated

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VIN
COMP

GND
EN

ENR
C1+

C1−
DRV

FB2
REF

FB4
BASE

SW
SW

FB1

SUP

C2+

C2−/MODE

OUT3

FB3

PG
PGND
PGND

GND

TPS65140

D1

System Power

Good

Q1

BCP68

D2

D3

R3

R4

R5

R6

C5

R2

R1

V

I

2.7 V to 5.8 V

C3
22 µF

C13

10 nF

L1

4.2 µH

C1 0.22 µF

C12

0.22 µF

C6

0.22 µF

C11

100 nF

V

I

C9

1 µF

VO4

3.3 V

C9

4.7 µF

C1

0.22 µF

V

I

C4
22 µF

C7

0.22 µF

R7
33 kΩ

VO3

Up to 30 V/20 mA

VO1

Up to 15 V/350 mA

VO2

Up to 12 V/20 mA

TPS65140
TPS65145

SLVS497B – SEPTEMBER 2003 – REVISED MARCH 2004

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.

TYPICAL APPLICATION CIRCUIT

ORDERING INFORMATION

(1)

PACKAGE

TSSOP QFN

T

A

-40°C to 85°C

(1) The PWP and RGE packages are available taped and reeled. Add an R suffix to the device type (TPS65100PWPR) to order the device

taped and reeled. The PWPR package has quantities of 2000 devices per reel, and the the RGER package has 3000 devices per reel.
Without the suffix, the PWP package only, is shipped in tubes with 60 devices per tube.

2

LINEAR REGULATOR MINIMUM SWITCH

OUTPUT VOLTAGE CURRENT LIMIT

3.3 V 1.6 A TPS65140PWP TPS65140RGE TPS65140

3.3 V 0.96 A TPS65145PWP TPS65145RGE TPS65145

PACKAGE

MARKING

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TPS65140
TPS65145

SLVS497B – SEPTEMBER 2003 – REVISED MARCH 2004

ABSOLUTE MAXIMUM RATINGS

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

Voltages on pin VIN
Voltages on pin Vo1, SUP, PG
Voltages on pin EN, MODE, ENR
Voltage on pin SW
Power good maximum sink current (PG) 1 mA
Continuous power dissipation See Dissipation Rating Table
Operating junction temperature range -40°C to 150°C
Storage temperature range -65°C to 150°C
Lead temperature (soldering, 10 sec) 260°C

(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.

(2)

(2)

(2)

(2)

(1)

UNIT

-0.3 V to 6.0 V

-0.3 V to 15.5 V

-0.3 V to VI+ 0.3 V
20 V

DISSIPATION RATINGS

PACKAGE RΘ

JA

24-Pin TSSOP 30.13 C°/W (PWP soldered) 3.3 W 1.83 W 1.32 W

24-Pin QFN 30.0 C°/W 3.3 W 1.8 W 1.3 W

TA≤ 25°C TA= 70°C TA= 85°C

POWER RATING POWER RATING POWER RATING

RECOMMENDED OPERATING CONDITIONS

MIN TYP MAX UNIT

VIN Input voltage range 2.7 5.8 V
L Inductor
T

A

T

J

(1)

4.7 µH
Operating ambient temperature -40 85 °C
Operating junction temperature -40 125 °C

(1) Refer to the application information section for further information.

ELECTRICAL CHARACTERISTICS

Vin= 3.3 V, EN = VIN, Vo1 = 10 V, TA= -40°C to 85°C, typical values are at TA= 25°C (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

SUPPLY CURRENT

V

in

I

QIN

I

QCharge

I

QEN

I

SD

V

UVLO

LOGIC SIGNALS EN, ENR

V

IH

V

IL

I

I

Input voltage range 2.7 5.5 V
Quiescent current into VIN

Charge pump quiescent
current into SUP

ENR = GND, Vo3 = 2 × Vo1, 0.7 0.9 mA
Boost converter not switching

Vo1 = SUP = 10 V, Vo3 = 2 × Vo1 1.7 2.7
Vo1 = SUP = 10 V, Vo3 = 3 × Vo1 3.9 6

LDO controller quiescent ENR = VIN, EN = GND 300 800 µA
current into Vin

Shutdown current into VIN EN = ENR = GND 1 10 µA
Undervoltage lockout VIfalling 2.2 2.4 V

threshold
Thermal shutdown Temperature rising 160 °C

High level input voltage 1.5 V
Low level input voltage 0.4 V
Input leakage current EN = GND or VIN 0.01 0.1 µA

mA

3

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TPS65140
TPS65145

SLVS497B – SEPTEMBER 2003 – REVISED MARCH 2004

ELECTRICAL CHARACTERISTICS (continued)

Vin= 3.3 V, EN = VIN, Vo1 = 10 V, TA= -40°C to 85°C, typical values are at TA= 25°C (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

MAIN BOOST CONVERTER

Vo1 Output voltage range 5 15 V
VO1-Vin Minimum input to output 1 V

V

REF

V

FB

I

FB

r

DS(on)

I

LIM

r

DS(on)

I

MAX

I

leak

f

SW

NEGATIVE CHARGE PUMP Vo2

Vo2 Output voltage range -2 V
V

ref

V

FB

I

FB

r

DS(on)

I

O

POSITIVE CHARGE PUMP Vo3

Vo3 Output voltage range 30 V
V

ref

V

FB

I

FB

voltage difference
Reference voltage 1.205 1.13 1.219 V
Feedback regulation volt- 1.136 1.146 1.154

age
Feedback input bias cur- 10 100 nA

rent
N-MOSFET on-resistance

(Q1)
N-MOSFET switch current

limit (Q1)
P-MOSFET on-resistance

(Q2)
Maximum P-MOSFET peak

switch current

Switch leakage current µA

Oscillator frequency MHz

Line regulation 2.7 V ≤ VI≤ 5.7 V; I

Vo1 = 10 V, Isw= 500 mA 195 290
Vo1 = 5 V, Isw= 500 mA 285 420
TPS65140 1.6 2.3 2.6 A
TPS65145 0.96 1.37 1.56 A
Vo1 = 10 V, Isw= 100 mA 9 15
Vo1 = 5 V, Isw= 100 mA 14 22

1 A

Vsw= 15 V 1 10
Vsw= 0 V 1 10
0°C ≤ TA≤ 85°C 1.295 1.6 2.1

-40°C ≤ TA≤ 85°C 1.191 1.6 2.1
= 100 mA 0.012 %/V

load

Load regulation 0 mA ≤ IO≤ 300 mA 0.2 %/A

Reference voltage 1.205 1.213 1.219 V
Feedback regulation volt-

age
Feedback input bias cur-

rent
Q8 P-Channel switch

r

DS(on)

Q9 N-Channel switch
r

DS(on)

IO= 20 mA Ω

-36 0 36 mV

10 100 nA

4.3 8

2.9 4.4
Minimum output current 20 mA
Line regulation 0.09 %/V

7 V ≤ Vo1 ≤ 15 V, I
V

=10 mA, Vo2 = -5

load

Load regulation 1 mA ≤ IO≤ 20 mA, Vo2 = -5 V 0.126 %/mA

Reference voltage 1.205 1.213 1.219 V
Feedback regulation volt-

age
Feedback input bias cur-

rent

1.187 1.214 1.238 V

10 100 nA

V

mΩ

Ω

4

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1
2
3
4
5
6
7
8

9
10
11
12

24
23
22
21
20
19
18
17
16
15
14
13

FB1
FB4

BASE

VIN
SW

SW
PGND
PGND

SUP

PG

GND

FB3

EN
ENR
COMP
FB2
REF
GND
DRV
C1−
C1+
C2−/MODE
C2+
OUT3

Thermal PAD*

FB2

REF

GND

DRV

C1−

C1+

1
2
3
4
5
6

18
17
16

15
14
13

7 8

9

10

11 12

19

20212223

24

Exposed

Thermal Die*

COMP

ENR

EN

FB1
FB4

BASE

VINSWSW

PGND

PGND

SUP

C2−/MODE
C2+
OUT3
FB3
GND
PG

PWP PACKAGE

TOP VIEW

RGE PACKAGE

TOP VIEW

TPS65140
TPS65145

SLVS497B – SEPTEMBER 2003 – REVISED MARCH 2004

ELECTRICAL CHARACTERISTICS (continued)

Vin= 3.3 V, EN = VIN, Vo1 = 10 V, TA= -40°C to 85°C, typical values are at TA= 25°C (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Q3 P-Channel switch
r

DS(on)

Q4 N-Channel switch
r

r

DS(on)

DS(on)

Q5 P-Channel switch
r

DS(on)

IO= 20 mA Ω

Q6 N-Channel switch
r

DS(on)

V

d

I

O

D1 – D4 Shottky diode for­ward voltage

I

= 40 mA 610 720 mV

D1-D4

Minimum output current 20 mA
Line regulation 0.56 %/V

10 V ≤ Vo1 ≤ 15 V, I
27 V

= 10 mA, Vo3 =

load

Load regulation 1 mA ≤ IO≤ 20 mA, Vo3 = 27 V 0.05 %/mA

LINEAR REGULATOR CONTROLLER Vo4

Vo4 Output voltage 4.5 V≤VI≤ 5.5 V; 10 mA ≤ IO≤500 mA 3.2 3.3 3.4 V

I

BASE

Maximum base drive cur­rent

Vin-Vo4-V
Vin-Vo4-V

BE
BE

Line regulation 4.75 V ≤ VI≤5.5 V, I

≥ 0.5 V
≥ 0.75 V

(1)

(1)

= 500 mA 0.186 %/V

load

13.5 19
20 27

Load regulation 1 mA ≤ IO≤ 500 mA, VI= 5 V 0.064 %/A
Start up current Vo4 ≤ 0.8 V 11 20 25 mA

SYSTEM POWER GOOD (PG)

V

(PG, VO1)

V

(PG, VO2)

V

(PG, VO3)

Power good threshold

(2)

VOL PG output low voltage I

= 500 µA 0.3 V

(sink)

-12 -8.75% Vo1 -6 V

-13 -9.5% Vo2 -5 V

-11 -8% Vo3 -5 V

IL PG output leakage current VPG = 5 V 0.001 1 uA

9.9 15.5

1.1 1.8

4.6 8.5

1.2 2.2

mA

(1) With Vin= supply voltage of the TPS65140, Vo4 = output voltage of the regulator, V
(2) The power good goes high when all 3 outputs (Vo1, Vo2, Vo3) are above their threshold. The power good goes low as soon as one of

= basis emitter voltage of external transistor.

BE

the outputs is below their threshold.

DEVICE INFORMATION

5

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TPS65140
TPS65145

SLVS497B – SEPTEMBER 2003 – REVISED MARCH 2004

DEVICE INFORMATION (continued)

Terminal Functions

TERMINAL

NAME NO. (RGE)

VIN 4 7 I Input voltage pin of the device.
EN 24 3 I
COMP 22 1 Compensation pin for the main boost converter. A small capacitor is connected to this

PG 10 13 O nominal output voltage. The output goes low when one of the outputs falls below 10%

ENR 23 2 I left floating. Logic high enables the regulator and a logic low puts the regulator in

C1+ 16 19 Positive terminal of the charge pump flying capacitor
C1- 17 20 Negative terminal of the charge pump flying capacitor
DRV 18 21 O External charge pump driver
FB2 21 24 I Feedback pin of negative charge pump
REF 20 23 O Internal reference output typically 1.23 V

FB4 2 5 I
BASE 3 6 O Base drive output for the external transistor

GND 11, 19 14, 22 Ground
PGND 7, 8 10, 11 Power ground
FB3 12 15 I Feedback pin of positive charge pump
OUT3 13 16 O Positive charge pump output

C2-/MODE 15 18

C2+ 14 17

SUP 9 12 I

FB1 1 4 I Feedback pin of the boost converter
SW 5, 6 8, 9 I Switch pin of the boost converter
PowerPAD The PowerPAD or exposed thermal die needs to be connected to power ground pins

™/Thermal (PGND)
Die

NO.

(PWP)

I/O DESCRIPTION

Enable pin of the device. This pin should be terminated and not be left floating. A logic
high enables the device and a logic low shuts down the device.

pin.
Open drain output indicating when all outputs Vo1, Vo2, Vo3 are within 10% of their

of their nominal output voltage.
Enable pin of the linear regulator controller. This pin should be terminated and not be

shutdown.

Feedback pin of the linear regulator controller. The linear regulator controller is set to a
fixed output voltage of 3.3 V or 3.0 V depending on the version.

Negative terminal of the charge pump flying capacitor and charge pump MODE pin. If
the flying capacitor is connected to this pin, the converter operates in a voltage tripler
mode. If the charge pump needs to operate in a voltage doubler mode, the flying
capacitor is removed and the C2-/MODE pin needs to be connected to GND.

Positive terminal for the charge pump flying capacitor. If the device runs in voltage
doubler mode, this pin needs to be left open.

Supply pin of the positive, negative charge pump, boost converter, and gate drive
circuit. This pin needs to be connected to the output of the main boost converter and
cannot be connected to any other voltage source. For performance reasons, it is not
recommended for a bypass capacitor to be connected directly to this pin.

6

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1.6-MHz

Oscillator

D

S

VFB

1.146 V

Comparator

VFB

1.146 V

D
S

D
S

Vref

1.213 V

Vin

~1 V

D
S

SUP

SUP

D
S

D
S

SUP

C1−

C1+

Vo3

C2+

C2−

D
S

Vref

1.214 V

Soft Start

Vref

1.213 V

SUP

ENR BASE

FB4

REF

FB2

DRV

COMP

FB1

VIN

SW SW

FB3

PG

GND GND PGND PGND

Q1

Q3

Q4

Q5

Q6

Q7

D
S

D
S

Q8

Q9

Q10

SUP

EN

Linear
Regulator
Controller

Reference

Output

Negative

Charge Pump

Positive

Charge Pump

Main boost

converter

Vref

0 V

Current
Control

D1

D4

D2

D3

FB1
FB2
FB3

D

S

Q2

SUP

Vref

1.213 V

FB1

FB2

FB3

System Power

Good

Bias V

ref

= 1.213 V

Thermal Shutdown

Start−Up Sequencing

Undervoltage Detection

Overvoltage Detection

Short Circuit Protection

Current Limit

and

Soft Start

Control Logic

Gate Drive Circuit

Gain Select
(Doubler or

Tripler Mode)

Current
Control

Soft Start

Logic and

1-µs Glitch

Filter

D

S

Short Circuit

Detect

Soft Start

Iref = 20 mA

GM Amplifier

Low Gain

SUP

(VO)

Sawtooth

Generator

FUNCTIONAL BLOCK DIAGRAM

TPS65140
TPS65145

SLVS497B – SEPTEMBER 2003 – REVISED MARCH 2004

7

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10

20

30

40

50

60

70

80

90

100

1 10 100 1 k

Vo1 = 6 V

IL − Load Current − mA

Efficiency − %

Vo1 = 15 V

Vo1 = 10 V

VI = 3.3 V
Vo2, Vo3 = No Load, Switching

10

20

30

40

50

60

70

80

90

100

1 10 100 1 k

I

L

− Load Current − mA

Efficiency − %

Vo1 = 15 V

Vo1 = 10 V

VI = 5 V
Vo2, Vo3 = No Load, Switching

70

75

80

85

90

95

100

2.5 3 3.5 4 4.5 5 5.5 6

Vo1 = 6 V

Vo3 = 15 V

Vo2 = 10 V

ILoad at Vo1 = 100 mA
Vo2, Vo3 = No Load, Switching

V

I

− Input Voltage − V

Efficiency − %

TPS65140
TPS65145

SLVS497B – SEPTEMBER 2003 – REVISED MARCH 2004

TYPICAL CHARACTERISTICS

Table of Graphs

Main Boost Converter

Efficiency, main boost converter Vo1 vs Load current 1

η Efficiency, main boost converter Vo1 vs Load current 2

Efficiency vs Input voltage 3

f

sw

r

DS(on)

Negative Charge Pump

I

max

Positive Charge Pump

I

max

I

max

Switching frequency vs Free-air temperature 4
r

N-Channel main switch Q1 vs Free-air temperature 5

DS(on)

PWM operation continuous mode 6
PWM operation, discontinuous (light load) 7
Load transient response, CO= 22 µF 8
Load transient response, CO= 2*22 µF 9
Power-up sequencing 10
Soft start Vo1 11

Vo2 maximum load current vs Output voltage Vo1 12

Vo3 maximum load current vs Output voltage Vo1 (doubler mode) 13
Vo3 Maximum load current vs Output voltage Vo1 (tripler mode) 14

FIGURE

8

EFFICIENCY EFFICIENCY EFFICIENCY

vs vs vs

LOAD CURRENT LOAD CURRENT INPUT VOLTAGE

Figure 1. Figure 2. Figure 3.