DESCRIPTION

The device implements a two phase step-down

controller with a 180 phase-shift between each

phase with integrated high current drivers in a

compact 10x10mm body package with exposed

pad. A precise 6-bit digital to analog converter

(DAC) allows adjusting the output voltage from

0.8375V to 1.6000V with 12.5mV binary steps

managing Dynamic VID code changes.

The high precision internal reference assures the

selected output voltage to be within 0.5 over line

and temperature variations. The high peak current

gate drive affords to have fast switching to the external power mos providing low switching losses.

The device assures a fast protection against load

over current and load over/under voltage. An internal crowbar is provided turning on the low side

mosfet if an over-voltage is detected.

In case of over-current, the system works in Constant Current mode until UVP

■ 2 PHASE OPERATION WITH

SYNCRHONOUS RECTIFIER CONTROL

■ ULTRA FAST LOAD TRANSIENT RESPONSE

■ INTEGRATED HIGH CURRENT GATE

DRIVERS: UP TO 2A GATE CURRENT

■ 6 BIT PROGRAMMABLE OUTPUT

COMPLIANT WITH VRD 10

■ DYNAMIC VID MANAGEMENT

■ 0.5 OUTPUT VOLTAGE ACCURACY

■ 10 ACTIVE CURRENT SHARING

ACCURACY

■ DIGITAL 2048 STEP SOFT-START

■ OVERVOLTAGE PROTECTION

■ OVERCURRENT PROTECTION REALIZED

USING THE LOWER MOSFET'S RdsON OR A

SENSE RESISTOR

■ OSCILLATOR EXTERNALLY ADJUSTABLE

AND INTERNALLY FIXED AT 150kHz

■ POWER GOOD OUTPUT AND ENABLE

FUNCTION

■ INTEGRATED REMOTE SENSE BUFFER

APPLICATIONS

■ POWER SUPPLY FOR HIGH CURRENT

MICROPROCESSORS

■ POWER SUPPLY FOR SERVER AND

WORKSTATION

■ DISTRIBUTED POWER SUPPLY