TPS54873PWP datasheet(6/15 Pages) TI

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TPS54873

SLVS444 – OCTOBER 2002

www.ti.com

INTERNAL BLOCK DIAGRAM

Falling

Edge

Deglitch

Enable

Comparator

1.2 V

VIN

2.95 V

Hysteresis: 0.03 V

2.5

µs

Falling

and

Rising

Edge

Deglitch

2.5

µs

VIN UVLO

Comparator

Hysteresis: 0.16 V

Internal/External

Slow-start

(Internal Slow-Start Time = 3.35 ms)

Reference

VREF = 0.891 V

–

Error

Amplifier

Thermal

Shutdown

150

°C

SHUTDOWN

SS_DIS

PWM

Comparator

OSC

Leading

Edge

Blanking

100 ns

Adaptive Dead-Time

and

Control Logic

SHUTDOWN

30 m

Ω

VIN

REG

VBIAS

VIN

BOOT

VIN

PGND

PWRGD

Falling

Edge

Deglitch

µs

VSENSE

SHUTDOWN

0.90 Vref

Hysteresis: 0.03 Vref

Powergood

Comparator

AGND

VBIAS

ILIM

Comparator

3 – 6 V

SYNC

COMP

VSENSE

SS/ENA

TPS54873

30 m

Ω

LOUT

Start-Up

Driver

Suppression

ADDITIONAL 6A SWIFT

 DEVICES, (REFER TO SLVS397 AND SLVS400)

DEVICE

OUTPUT VOLTAGE

DEVICE

OUTPUT VOLTAGE

DEVICE

OUTPUT VOLTAGE

TPS54611

0.9 V

TPS54614

1.8 V

TPS54672

Active termination

TPS54612

1.2 V

TPS54615

2.5 V

TPS54610

Adjustable

TPS54613

1.5 V

TPS54616

3.3 V

TPS54680

Sequencing

RELATED DC/DC PRODUCTS

D TPS54673 – DC/DC Converter (integrated switch)

D TPS40000 – DC/DC Controller

D TPS40002 – DC/DC Controller

TPS54873PWP 数据表(PDF) 6 Page - Texas Instruments

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