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UCC39002DG4 Datasheet(PDF) 1 Page - Texas Instruments |
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UCC39002DG4 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 28 page  UCC29002 UCC29002/1 UCC39002 SLUS495H − SEPTEMBER 2001 − REVISED AUGUST 2007 ADVANCED 8PIN LOADSHARE CONTROLLER 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, RSHUNT, 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 RSHUNT RADJ o CS− 2 3 4 8 7 6 5 GND 1 Copyright 2007, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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