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UCC39002DR 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
电源管理
封装:
SOIC-8
描述:
先进的8引脚负载共享控制器 ADVANCED 8-PIN LOAD-SHARE CONTROLLER
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UCC39002DR数据手册
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若手册格式错乱，请下载阅览PDF原文件
SLUS495H − SEPTEMBER 2001 − REVISED AUGUST 2007
1
www.ti.com
FEATURES
D
High Accuracy, Better Than 1% CurrentShare
Error at Full Load
D High-Side or Low-Side (GND Reference)
Current-Sense Capability
D Ultra-Low Offset Current Sense Amplifier
D Single Wire Load Share Bus
D Full Scale Adjustability
D Intel
SSI LoadShare Specification Compliant
D Disconnect from Load Share Bus at Stand-By
D Load Share Bus Protection Against Shorts to
GND or to the Supply Rail
D 8-Pin MSOP Package Minimizes Space
D Lead-Free Assembly
SYSTEM CONFIGURATIONS
D
Modules With Remote Sense Capability
D Modules With Adjust Input
D Modules With Both Remote Sense and Adjust
Input
D In Conjunction With the Internal Feedback E/A
of OEM Power Supply Units
DESCRIPTION
The UCC39002 is an advanced, high performance and
low cost loadshare controller that provides all
necessary functions to parallel multiple independent
power supplies or dc-to-dc modules. Targeted for high
reliability applications in server, workstation, telecom
and other distributed power systems, the controller is
suitable for N+1 redundant systems or high current
applications where off-the-shelf power supplies need to
be paralleled.
The BiCMOS UCC39002 is based on the automatic
master/slave architecture of the UC3902 and UC3907
load share controllers. It provides better than 1%
current share error between modules at full load by
using a very low offset post-package-trimmed
current-sense amplifier and a high-gain negative
feedback loop. And with the amplifier’s common mode
range of 0-V to the supply rail, the current sense
resistor, R
SHUNT
, can be placed in either the GND return
path or in the positive output rail of the power supply.
CS+
VDD
CSO
LS
EAO
ADJ
UCC39002
V+V+
S+
V−
S−
LOAD
POWER
SUPPLY
WITH
REMOTE
SENSE
TYPICAL LOW-SIDE CURRENT SENSING APPLICATION
LS BUS
SYSTEM+
SYSTEM+−
R
SHUNT
R
ADJ
o
CS−
2
3
4
8
7
6
5GND
1
Copyright 2007, Texas Instruments Incorporated
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