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TPS2399DGKG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS2399DGKG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 28 page TPS2398 TPS2399 SLUS562A − JUNE 2003 − REVISED SEPTEMBER 2003 -48V HOT SWAP CONTROLLER FOR REDUNDANT SUPPLY SYSTEMS 1 www.ti.com FEATURES D Wide Input Supply Range: −36 V to −80 V D Transient Rating to −100 V D Improved Transient Response D Enable Input (EN) D Programmable Current Limit D Programmable Current Slew Rate D Fault Timer to Eliminate Nuisance Trips D Open-Drain Power Good Output (PG) D 8-Pin MSOP Package ⋅APPLICATIONS D −48-V Distributed Power Systems D Redundant Negative Voltage Supplies D Central Office Switching DESCRIPTION The TPS2398 and TPS2399 integrated circuits are hot swap power managers optimized for use in nominal −48-V systems. For redundant-supply systems, they incorporate an improved circuit breaker response that provides rapid protection from short circuits, while still enabling plug-ins to tolerate large transients that can be generated by the sudden switchover to a higher voltage supply. 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. APPLICATION DIAGRAM UDG−03069 COUT VDD R1 0.02 Ω 1% C1 0.047 µF R3 30 k Ω 0.5 W R2 100 k Ω 1 2 8 5 RTN EN + −VIN GATE ISENS −48V_INA TPS2398/TPS2399 3 FLTTIME 4 IRAMP 6 7 C2 3900 pF VOUT+ VIN+ VOUT− DC/DC CONVERTER VIN− VOUT+ VOUT− + D1 D2 −48V_INB −48V_RTN Q1 IRF530 C3 100 µF 100 V PG 10 µA EN 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, 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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