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TPS2391DGK Datasheet(PDF) 1 Page - Texas Instruments |
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TPS2391DGK Datasheet(HTML) 1 Page - Texas Instruments |
1 / 21 page TPS2390 TPS2391 SLUS471D − JUNE 2002 − REVISED JANUARY 2008 SIMPLE -48V HOT SWAP CONTROLLER 1 www.ti.com FEATURES D Wide Input Supply Range: −36 V to −80 V D Transient Rating to −100 V D Programmable Current Limit D Programmable Current Slew Rate D Enable Input (EN) D Fault Timer to Eliminate Nuisance Trips D Open-Drain Fault Output (FAULT) D Requires Few External Components D 8-Pin MSOP Package ⋅APPLICATIONS D −48-V Distributed Power Systems D Central Office Switching D Wireless Base Station DESCRIPTION The TPS2390 and TPS2391 integrated circuits are hot swap power managers optimized for use in nominal −48-V systems. They are designed for supply voltage ranges up to −80 V, and are rated to withstand spikes to −100 V. In conjunction with an external N-channel FET and sense resistor, they can be used to enable live insertion of plug-in cards and modules in powered systems. Both devices provide load current slew rate and peak magnitude limiting, easily programmed by sense resistor value and a single-external capacitor. They also provide single-line fault reporting, electrical isolation of faulty cards, and protection against nuisance overcurrent trips. The TPS2390 latches off in response to current faults, while the TPS2391 periodically retries the load in the event of a fault. APPLICATION DIAGRAM UDG−02085 DGK PACKAGE (TOP VIEW) FAULT 18 2 3 4 7 6 5 EN FLTTIME IRAMP RTN GATE ISENS −VIN 6 5 8 7 1 2 3 FAULT EN FLTTIME GATE ISENSE −VIN 4 IRAMP RTN TPS2390/1 D2 C2 3900 pF −48V_IN −48V_RTN DC/DC CONVERTER MODULE + + Q1 IRF530 C3 100 µF 100 V COUT VOUT+ VOUT− R1 0.02 Ω 1/4 W 1% C1 0.1 µF R3 10 k Ω 1 W R2 100 k Ω 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. Copyright 2002 − 2008, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. |
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