TPS56300

DUAL-OUTPUT LOW-INPUT-VOLTAGE

DSP POWER SUPPLY CONTROLLER WITH SEQUENCING

SLVS261A – DECEMBER 1999 – JANUARY 2000

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POST OFFICE BOX 655303

Supports Popular DSP and Microcontroller

Core and I/O Voltages

– Switching Regulator Controls Core

Voltage

– Low Dropout Controller Regulates I/O

Voltage

Simultaneous Powerup of Both Outputs

Capacitance for Lower System Costs

Overcurrent Protection

MOSFETs Through Entire Input Voltage

Range

Available

description

The high performance TPS56300 synchronous-buck regulator provides two supply voltages to power the core

and I/O of digital signal processors, such as the ‘C6000 family. The ripple regulator, using hysteretic control with

droop compensation, is configured for the core voltage and features fast transient response time reducing

output bulk capacitance (continued).

typical design

+

See Note A

See Note A

NOTE A: See Table 1

Copyright

© 2000, 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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VID0

VID1

SLOWST

VHYST

VREFB

VSEN–RR

ANAGND

BIAS

VLDODRV

CPC1

CPC2

VDRV

DRVGND

DROOP

OCP

IOUT

PWRGD

VSEN–LDO

NGATE–LDO

INHIBIT

IOUTLO

HISENSE

LOSENSE/LOHIB

HIGHDR

BOOT

BOOTLO

LDWDR

PWP PACKAGE

(TOP VIEW)

Thermal

Pad

PowerPAD

™ Package

PowerPAD is a trademark of Texas Instruments Incorporated.