TPS5102

DUAL, HIGH-EFFICIENCY CONTROLLER FOR NOTEBOOK PC POWER

SLVS239 - SEPTEMBER 1999

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POST OFFICE BOX 655303

Power

Efficiency Under Light Load Conditions

Standby)

description

The TPS5102 is a dual, high efficiency controller designed for notebook system power requirements. Under light

load conditions, high efficiency is maintained as the controller switches from the PWM mode to the lower

frequency Skip mode.

These two operating modes, along with the synchronous-rectifier drivers, dead-time, and very low quiescent

current, allow power to be conserved and the battery life extended, under all load conditions.

The resistor-less current protection and fixed high-side driver voltage simplify the system design and reduce

the external parts count. The wide input voltage range and adjustable output voltages allow flexibility for using

the TPS5102 in notebook power supply applications.

Copyright

© 1999, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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.

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INV1

FB1

SOFTSTART1

PWM_SKIP

GND

REF

STBY1

STBY2

COMP

SOFTSTART2

FB2

INV2

LH1

OUT1_u

LL1

OUT1_d

OUTGND1

TRIP1

VCC_CNTP

TRIP2

VREF5

REG5V_IN

OUTGND2

OUT2_d

LL2

OUT2_u

LH2

DBT PACKAGE

(TOP VIEW)

R6

R4

R2

R1

D2

C11

C9

C8

C6

C5

C2

U1

TPS5102DBT

GND

+

C1

C3

C4

C7

C10

D1

R3

R5

R7

5 V

Vo1

L1

Q1

R8

+

C12

Q4

R11

R10

R9

Q3

Q2

L2

Vo2

+

C13