L6756D

更新时间： 2024-12-01 03:49:55

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		控制器
页数	文件大小	规格书
36页	652K
描述
2/3/4 phase buck controller for VR10, VR11 and VR11.1 processor applications

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中文翻译

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L6756D 数据手册

L6756D

2/3/4 phase buck controller

for VR10, VR11 and VR11.1 processor applications

Features

■ LTB Technology enhances load transient

response

■ 2 to 4 scalable phase operation

■ Dual-edge asynchronous architecture

■ PSI# input with programmable strategy

■ Imon output

VFQFPN40 6x6 mm

■ Flexible driver support

Description

■ 7/8 bit programmable output - VR10/11.1 DAC

■ 0.5% output voltage accuracy

L6756D is a two-to-four phase controller designed

to power Intel’s most demanding processors and,

most in general, low-voltage, high-current power

supplies. The device features LTB Technology to

provide the fastest response to load transients

thus minimizing the output

■ Full-differential current sense across DCR

■ Integrated remote sense buffer

■ Feedback disconnection protection

■ Adjustable oscillator from 100 kHz to 1 MHz

■ LSLess startup to manage pre-biased output

■ Programmable soft-start

filter composition.

L6756D embeds selectable DAC: output voltage

is programmable up to 1.6000 V (Intel VR10 and

VR11.x DACs) managing DVID transitions with

0.5% output voltage accuracy over line, load and

temperature variations.

■ Threshold sensitive enable pin for VTT

Sensing

■ VFQFPN40 6x6 mm package

The device assures fast protection against load

over current and under / over voltage. Feedback

disconnection prevents from damaging the load in

case of misconnections in the system board.

Applications

■ High-current VRM / VRD for desktop / server /

Low-side-less start-up allows soft-start over pre-

biased output avoiding dangerous current return

through the main inductors as well as negative

spike at the load side.

workstation CPUs

■ Graphic cards

■ Low-voltage, high-current power supplies

■ High-density DC / DC converters

L6756D is available in VFQFPN 6x6 mm package

Table 1.

Device summary

Order code

Package

Packing

L6756D

VFQFPN40

Tube

L6756DTR

Tape and reel

October 2008

Rev 1

1/36

www.st.com

12 3 4 5 6 7...36

中文翻译

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