INFINEON TLE 6363 User Manual

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Multifunctional Voltage Regulator and Watchdog TLE 6363

Preliminary D ata Sheet

Overview

Features

• Step up converter (Boost Voltage)

• Boost Over- and Under-Voltage-Lockout

• Step down c onverter (Logic Voltage)

• 2% output voltage tolerance

• Logic Over- and Under-Voltage-Lockout

• Overtemperature Shutdown

• Power ON/OFF reset generator

• Digital window watchdog

• System Enable O utput

• Ambient operation temperature range – 40

• Wide S upply voltage operation rang e

• Very low current consumption

• Very small P-DSO-14-2 SMD package



Cto125C

P-DSO-14-2

Type Ordering Code Package

TLE 6363 G on request P-DSO-14-2

Functional Des crip tion

General

The TLE 6363 G is a multifunctional power sup p ly circuit especially designed for automotive applications. It delivers a programmable step up voltage (Boost) and a precise 5 V fully short circuit protected output voltage (Buck). The TLE 6363 G contains a power on reset feature to st art up the system, an integrated digital window watchdog to monitor the connected microcontroller and a system enable output t o indicate the microcontroller window watchdog faults.

®

The device is based on Infineon’s power technology SPT

which allows bipolar and CMOS control circuitry to be integrated with DMOS power devices on the same monolithic circuitry. The very small P-DSO-14-2 SMD packages meet the application requirements.

Data Sheet V 1.1 1 2000-11-8

TLE 6363

Furthermore, the build-in features like under- and overvoltage lockout for boost- and buck-voltage and the o vertemperature shutdown feature increase the reliability of the

TLE 6363 G supply system.

Pin Definitions and Functions Pin No.

Symbol Function

SO-14

1RReference Input ; an external resistor from this pin to GND

determines the reference current a nd the oscillator frequency

2ROReset Output; open drain output from reset comparator wit h an

internal pull up resistor

3WDIWatchdog Input; input for the watchdog control signal from the

controller 4GNDGround; analog signal ground 5 SEN System Enable Output; open drain output from Watchdog

fail-circuit with an internal pull up resistor 6BUCBuck-Converter Compensation Input; output of internal error

amplifier; for loop-compensation connect an external R-C-series

combinationtoGND 7

V

CC

Supply VoltageOutput;buck converter output; external blocking

capacitor necessary 8BUOBuck Conver ter Output; source of the integrated power-DMOS 9

V

BOOST

Boost Converter Input; input supply voltage of the IC; coming

from the boost converter output voltage; buck converter i nput

voltage 10 BDS Buck Driver Supply Input; voltage to drive the buck converter

powerstage 11 OVL Boost Status Output; open drain output from boost PWM

comparator 12 BOFB Boost Converter Feedback Input; co nnect boost voltage divider

to this pin; internal reference i s the boost feedback t hreshold

V

BOFBTH

13 BOGND Boost-Ground; power signal ground; source of boost converter

power-DMOS 14 BOI Boost Converter Input; drain of the integrated buck converter

power-DMOS

Data Sheet V 1.1 2 2000-11-8

Pin Configuration

TLE 6363

1

R

RO

WDI

GND54

SEN

BUC

V

2 3

6

CC

Figure 1 Pin Configuration (top view)

14 13 12 11 10

9 8

AEP02960

BOI BOGND BOFB OVL BDS

V

Boost

BUO7

Data Sheet V 1.1 3 2000-11-8

Block Diagram

TLE 6363 G

BOFB

12

Boost

Converter

14

13

TLE 6363

BOI

BOGND

BUC

R

6

1

Biasing

V

REF

Reference

Current

Generator

and

Oscillator

V

Boost

Converter

V

Internal

Buck

4

GND

Reset,

Window

Watchdog

and

System

Enable

10

9

8

7

5

3

2

11

BDS

V

BOOST

BUO

V

CC

SEN

WDI

RO

OVL

AEB03008

Figure 2

Block Diagram

Data Sheet V 1.1 4 2000-11-8

TLE 6363

Absolute Maximum Ratings Parameter Symbol Limit Val ues Unit Remarks

min. max.

Voltages

Boost input voltage Boost o utput voltage Boost feedback vol tage Buck out put voltage Buck driver supply voltage Buck compensation input

voltage Logic supply voltage Reset output voltage System Enable output

voltage Current reference voltage Watchdog input voltage OVL output vol tage

V

BOI

V

BOOST

V

BOFB

V

BUO

V

BDS

V

BUC

V

CC

V

RO

V

SEN

V

R

V

WDI

V

OVL

–0.3 46 V – –0.3 46 V – –0.3 46 V – –1 46 V – –0.3 48 V – –0.3 6.8 V –

–0.3 6.8 V – –0.3 6.8 V – –0.3 6.8 V –

ESD-Protection (Human Body Model ;

All pins to GND

V

HBM

R =1.5k

–2 2 kV –

τ

; C = 100 pF)

Temperatures

Junction temperature Storage temperature

T

j

T

stg

–40 150 –50 150



C–



C–

Note: Stresses above those listed here may cause permanent damage to the dev ice.

Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Data Sheet V 1.1 5 2000-11-8

Operating Range Parameter Symbol Limit Values Unit Remarks

min. max.

TLE 6363

Boost input voltage Boost input voltage;

(normal operation) Boost input voltage;

(normal operation) Boost input voltage

Boost feedback vol tage Buck out put voltage Buck driver supply voltage Buck compensation input

voltage Logic supply voltage Reset output voltage System Enable output

voltage

V

BOI

V

BOOST

V

BOOST

V

BOOST

V

BOFB

V

BUO

V

BDS

V

BUC

V

CC

V

RO

V

SEN

–0.3 40 V – 535 VV

4.5 36 V V

BOOST

increasing

decreasing

– 0.3 4.5 V Boost- and

Buck-Converter OFF

03.0 V– –0.6 40 V – –0.3 48 V –

03.0 V–

4.00 6.25 V – –0.3 VCC+0.3 V – –0.3 VCC+0.3 V –

Watchdog input voltage Current reference voltage Junction temperature

V V T

WDI R j

0 VCC+0.3 V –

03.0 V– –40 150



C–

Thermal Resistance

Junction ambient

R

thj-a

–120K/W–

Note: In the operating range, the functions given i n the circuit description are fulfilled.

Data Sheet V 1.1 6 2000-11-8

Electrical Characteristics

TLE 6363

8V<

V

<35V;4.75V<VCC<5.25V;–40C<Tj<150C; RR=47kτ; all voltages

Boost

with respect to ground; positive current defined flowing into pin; unless otherwise specified.

Parameter Symbol Limit Values Unit Test Conditions

min. typ. max.

Current Consumption

Current consumption; see application circuit

Under- and Over-Voltage Lockout at

UV ON voltage;

I

Boost

I

Boost

V

BOUVON

–1.54mAICC=0mA;

I

BoLoad

=0mA

–510mAICC= 200 mA;

I

V

Boost

4.0 4.5 5.0 V V

BoLoad

BOOST

=50mA

increasing;

boost and buck conv. ON UV OFF voltage;

V

BOUVOFF

3.5 4.0 4.5 V V

BOOST

decreasing

boost and buck conv. OFF UV Hysteresis voltage OV OFF voltage;

boost conv. OFF OV ON voltage;

boost conv. ON OV Hysteresis voltage

Over-Voltage Lockout at

OV OFF voltage; buck conv. OFF

OV ON voltage; buck conv. ON

OV Hysteresis voltage

V

V V

V

CC

V

BOUVHY BOOVOFF

BOOVON

BOUVHY

BUOVOFF

BUOVON

BUOVHY

0.2 0.5 1.0 V HY = ON - OFF 34 37 40 V V

30 33 36 V V

BOOST

increasing

decreasing

1.5 4 10 V H Y = OFF - ON

5.5 6.0 6.5 V VCCincreasing

5.25 5.75 6.25 V VCCdecreasing

0.10 0.25 0.50 V HY = OFF - ON

Data Sheet V 1.1 7 2000-11-8

Electrical Characteristics (cont’d)

TLE 6363

8V<

V

<35V;4.75V<VCC<5.25V;–40C<Tj<150C; RR=47kτ; all voltages

Boost

with respect to ground; positive current defined flowing into pin; unless otherwise specified.

Parameter Symbol Limit Values Unit Test Conditions

min. typ. max.

Boost-Converter; BOI, BOFB and V

Boost voltage;

V

BOOST

see application circuit

Boost Voltage;

V

BOOST

see application circuit

Efficiency; see. appl. circuit Power-Stage ON

♣

R

BOON

resistance

BOOST

24.0 27.5 31.0 V 5 m A < I 100 mA; 8V<V

23 – 32 V 5 mA < I

100 mA; 8V<

–80–%I – 0.6 0.75

τ

Boost

T

=25C;

j

I

BOI

Boost

T

j

<16V

Batt

Boost

V

<16V

Batt

= 100 mA

=1A

<

=25C

<

Power-Stage ON

R

BOON

––1.4

resistance Boost overcurrent threshold Feedback threshold voltage

Feedback input current

I

BOOC

V

BOFBTH

I

FB

1.0 1.3 1.8 A –

2.55 2.7 2.85 V V

–2 –0.4 0

Buck-Converter; BUO, BDS, BUC and V

Logic supply voltage V

Efficiency; see. appl. circuit

Power-Stage ON

♣

R

CC

BUON

4.9 – 5.1 V 1 mA < ICC<

–85– %ICC=250mA;

– 0.38 0.5

resistance Power-Stage ON

R

BUON

––1.0

resistance

CC

τ

←

I

BOI

I

Boost

A2V<V

250 mA; see. appl. circuit

V

Boost

τ

T

=25C;

j

I

BUO

I

BUO

=1A

=12V

=25mA

BOFB

=25V

=1A =1A

<4V

Buck overcurrent threshold Input cur rent on pin

Data Sheet V 1.1 8 2000-11-8

V

CC

I

BUOC

I

CC

0.7 0.95 1.2 A –

–0.20.5mAVCC=5V

Electrical Characteristics (cont’d)

TLE 6363

8V<V

<35V;4.75V<VCC<5.25V;–40C<Tj<150C; RR=47kτ; all voltages

Boost

with respect to ground; positive current defined flowing into pin; unless otherwise specified.

Parameter Symbol Limit Values Unit Test Conditions

min. typ. max.

Buck G a te supply voltage;

V

BGS

= V

BDS

– V

BOOST

V

BGS

5–10V–

Reference Input; R (Oscillator; Timebase for Boost- and Buck-Converter, Reset and Watchdog)

Voltage on pin R Oscillator frequency Oscillator frequency Cycle time for watchdog

V f

OSC

f

OSC

t

CYL

R

1.3 1.4 1.5 V –

85 95 105 kHz Tj=25C 75 – 115 kHz – –1.05–mst

CYL

= 100/f

OSC

and reset timing

Reset G enerator; R O

Reset threshold;

V

decreasing/increasing

CC

Reset low voltage

V

Reset low voltage V

Reset high voltage V

Reset pull up current Reset Reaction time

I t

Power-up reset delay time t

RT

ROL

ROH

RO RR RD

4.50 4.65 4.75 V VROHtoLorLtoH transition;

V

remains low

RO

V

RT

CC

>1V

< V

RT

–0.20.4VI

V

–

CC

0.1

– VCC+

0.1 – 240 – 50 100 150 –64–t

V I

←

A0V<VRO<4V

←

s VCC< V

CYL

down to

=2mA;

ROL

2.5 V < =0.2mA;

ROL

1V<VCC< V

=0mA

ROH

V

∫

4.8 V

CC

Data Sheet V 1.1 9 2000-11-8