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L6919E

Part Number	L6919E
Manufacturer	STMicroelectronics
Description	5-BIT PROGRAMMABLE DUAL-PHASE CONTROLLER
Published	Feb 7, 2016
Detailed Description	L6919E 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT s 2 PHASE OPERATION WITH SYNCRHONOUS RECTIF...
Datasheet	L6919E PDF File

Overview

L6919E 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT s 2 PHASE OPERATION WITH SYNCRHONOUS RECTIFIER CONTROL s ULTRA FAST LOAD TRANSIENT RESPONSE s INTEGRATED HIGH CURRENT GATE DRIVERS: UP TO 2A GATE CURRENT s TTL-COMPATIBLE 5 BIT PROGRAMMABLE )OUTPUT FROM 0.
800V TO 1.
550V WITH t(s25mV STEPS cs DYNAMIC VID MANAGEMENT us 0.
6% OUTPUT VOLTAGE ACCURACY ds 10% ACTIVE CURRENT SHARING ACCURACY ro )s DIGITAL 2048 STEP SOFT-START P t(ss OVERVOLTAGE PROTECTION s OVERCURRENT PROTECTION REALIZED te cUSING THE LOWER MOSFET'S RdsON OR A le uSENSE RESISTOR so rods OSCILLATOR EXTERNALLY ADJUSTABLE AND INTERNALLY FIXED AT 200kHz b Ps POWER GOOD OUTPUT AND INHIBIT - O teFUNCTION s REMOTE SENSE BUFFER ) les PACKAGE: SO-28 ct(s bsoAPPLICATIONS u Os POWER SUPPLY FOR SERVERS AND d -WORKSTATIONS ro )s POWER SUPPLY FOR HIGH CURRENT P t(sMICROPROCESSORS te cs DISTRIBUTED POWER SUPPLY SO-28 ORDERING NUMBERS:L6919E L6919ETR 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 0.
800V to 1.
550V with 25mV binary steps managing On-The-Fly VID code changes.
The high precision internal reference assures the selected output voltage to be within ±0.
6%.
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.
le duBLOCK DIAGRAM Obso te ProPGOOD OSC / INH SGN D PW M1 VCCD R HS BOO T 1 UGA T E1 PHAS E1 2 P H AS E O S C IL L ATOR sole DIGITAL Ob SOFT-START LOGIC AN D P ...

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