L6917BDTR

5位可编程双相控制器 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER

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