L6917BDTR Datasheet PDF - ST Microelectronics

DESCRIPTION

●The device is a power supply controller specifically designed to provide a high performance DC/DC conversion for high current microprocessors. The device implements a dual-phase step-down controller with a 180° phase-shift between each phase. A precise 5-bit digital to analog converter (DAC) allows adjusting the output voltage from 1.100V to 1.850V with 25mV binary steps.

●■2 PHASE OPERATION WITH SYNCRHONOUS RECTIFIER CONTROL

●■ULTRA FAST LOAD TRANSIENT RESPONSE

●■INTEGRATED HIGH CURRENT GATE DRIVERS: UP TO 2A GATE CURRENT

●■TTL-COMPATIBLE 5 BIT PROGRAMMABLE OUTPUT COMPLIANT WITH VRM 9.0

●■0.8% INTERNAL REFERENCE ACCURACY

●■10% ACTIVE CURRENT SHARING ACCURACY

●■DIGITAL 2048 STEP SOFT-START

●■OVERVOLTAGE PROTECTION

●■OVERCURRENT PROTECTION REALIZED USING THE LOWER MOSFET"S RdsONOR A SENSE RESISTOR

●■300 kHz INTERNAL OSCILLATOR

●■OSCILLATOR EXTERNALLY ADJUSTABLE UP TO 600kHz

●■POWER GOOD OUTPUT AND INHIBIT FUNCTION

●■REMOTE SENSE BUFFER

●■PACKAGE: SO-28

●APPLICATIONS

●■POWER SUPPLY FOR SERVERS AND WORKSTATIONS

●■POWER SUPPLY FOR HIGH CURRENT MICROPROCESSORS

●■DISTRIBUTED DC-DC CONVERTERS