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 APPLICATION DIAGRAM DESCRIPTION
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 singleexternal capacitor. −48V_RTN D2 −48V_INB D1 −48V_INA R3 30 kΩ 0.5 W R2 100 kΩ TPS2398/TPS2399 1 PG RTN 8 2 EN GATE 7 C1 0.047 µF 3 FLTTIME ISENS 6 4 IRAMP −VIN 5 C2 3900 pF + C3 100 µF 100 V Q1 IRF530 VDD VIN+ VOUT+ EN 10 µA VIN− VOUT− DC/DC CONVERTER VOUT+ + COUT VOUT− R1 0.02 Ω...
Texas Instruments
