L6740L datasheet(1/44 Pages) STMICROELECTRONICS

部件名	L6740L

功能描述	Hybrid controller (41) for AMD SVID and PVID processors

PDF	44 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 44 page

August 2007

Rev 2

1/44

1

L6740L

Hybrid controller (4+1) for AMD SVID and PVID processors

Features

■ Hybrid controller: compatible with PVI and SVI

CPUs

■ Dual controller: 2 to 4 scalable phases for CPU

CORE, 1 Phase for NB

■ Dual-Edge asynchronous architecture with

LTB technologyTM

■ PSI management to increase efficiency in

Light-Load conditions

■ Dual Over-Current protection:

Average and per-Phase

■ Load indicator (CORE section)

■ Voltage positioning

■ Dual remote sense

■ Adjustable independent reference offset

■ Feedback disconnection protection

■ Programmable OV protection

■ Oscillator internally fixed at 150kHz externally

adjustable

■ LSLess startup to manage Pre-biased output

■ Flexible driver support

■ HTQFP48 package

Applications

■ Hybrid High-Current VRM / VRD for Desktop /

Server / Workstation / IPC CPUs supporting

PVI and SVI interface

■ High-density DC / DC converters

Description

L6740L is a hybrid CPU Power Supply Controller

compatible with both Parallel (PVI) and Serial

(SVI) protocols for AMD Processors.

The device embeds two independent control

loops for the CPU core and the integrated NB,

each one with its own set of protections. L6740L

is able to work in Single-Plane mode, addressing

only the CORE Section, according to the parallel

DAC codification. When in Dual-Plane mode, it is

compatible with the AMD SVI specification

addressing the CPU and NB voltages according

to the SVI bus commands.

The Dual-Edge Asynchronous Architecture is

optimized by LTB technologyTM allowing fast load-

transient response minimizing the output capaci-

tor and reducing the total BOM cost.

PSI management allows the device to selectively

turn-off phases when the CPU is in low-power

states increasing the over-all efficiency.

Fast protection against load over current is pro-

vided for both the Sections. Furthermore, feed-

back disconnection protection prevents from

damaging the load in case of misconnections in

the system board..

HTQFP48

Table 1.

Device summary

Order codes

Package

Packaging

L6740L

HTQFP48

Tube

L6740LTR

HTQFP48

Tape and reel

www.st.com

类似零件编号 - L6740L

制造商	部件名	数据表	功能描述
STMicroelectronics	L6741	301Kb / 16P	High current MOSFET driver 20-Aug-2007
	L6741TR	301Kb / 16P	High current MOSFET driver 20-Aug-2007
	L6743	317Kb / 17P	High current MOSFET driver 20-Aug-2007
	L6743	354Kb / 17P	High current MOSFET driver 05-Jun-2008
	L6743B	246Kb / 16P	High current MOSFET driver 17-Jun-2008

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类似说明 - L6740L

制造商	部件名	数据表	功能描述
International Rectifier	IR3500	754Kb / 47P	XPHASE3TM VR11.0 & AMD PVID CONTROL IC
Intersil Corporation	ISL6323A	840Kb / 35P	Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors March 23, 2009
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International Rectifier	IR3521	480Kb / 45P	XPHASE3TM AMD SVID CONTROL IC
Intersil Corporation	ISL6324A	1Mb / 39P	Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors April 29, 2010
International Rectifier	IR3500A	841Kb / 48P	XPHASE3TM VR11.0 & AMD PVID CONTROL IC
Renesas Technology Corp	ISL6323	1Mb / 36P	Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors
	ISL6323A	1Mb / 37P	Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors Mar 23, 2009
	ISL6323B	1Mb / 35P	Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors Mar 23, 2009