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TPS2392DBT Datasheet(PDF) 1 Page - Texas Instruments |
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TPS2392DBT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 34 page TPS2392 TPS2393 SLUS536C − AUGUST 2002 − REVISED AUGUST 2004 FULLFEATURED -48V HOT SWAP POWER MANAGER FEATURES D Wide Input Supply Range: −20 V to −80 V D Transient Rating to −100 V D Programmable Current Limit D Programmable Current Slew Rate D Programmable UV/OV Thresholds/Hysteresis D Debounced Insertion Detection Inputs D Open-Drain Power Good (PG) Output D Fault Timer to Eliminate Nuisance Trips D Open-Drain Fault Output (FAULT) D Enable Input (EN) D 14-Pin TSSOP package D 44-Pin TSSOP Package for Creapage/Clearance APPLICATIONS D −48-V Distributed Power Systems D Central Office Switching D Wireless Base Station DESCRIPTION The TPS2392 and TPS2393 integrated circuits are hot swap power managers optimized for use in nominal −48-V systems. They operate with supply voltage ranges from −20-V 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. Each device provides load current slew rate control and peak magnitude limiting. Undervoltage and overvoltage shutdown thresholds are easily programmed via a three-resistor divider network. In addition, two active-low, debounced inputs provide plug-in insertion detection. A power good (PG) output enables downstream converters. The TPS2392 and TPS2393 also provide the basic hot swap functions of electrical isolation of faulty cards, filtered protection against nuisance overcurrent trips, and single-line fault reporting. The 44-pin part supports designs where telecomm creepage and clearance requirements must be followed. The TPS2392 latches off in response to current faults, while the TPS2393 periodically retries the load in the event of a fault. UDG−02098 D1 BAS19 C2 0.1 µF R3 3.92 k Ω 1% R2 4.99 k Ω 1% R1 200 k Ω 1% R4 20 m Ω 1/4, 1% R6 10 k Ω R5 100 k Ω C4 100 µF 100 V COUT = 32.8 V = 30.8 V = 72.6 V VUV VUV VOV GATE 1 2 3 4 5 6 7 14 13 12 11 10 9 8 UVLO INSA INSB FAULT EN FLTTIME OVLO DRAINSNS ISENS IRAMP −VIN PG RTN TPS2392/TPS2393 VOUT+ VOUT− VIN+ VIN− DC/DC CONVERTER EN VDD C3 1500 pF VOUT+ VOUT− GND C1 3900 pF −48V Q1 IRF530 D2 5.6 V 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. . 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. www.ti.com Copyright 2004, Texas Instruments Incorporated |
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