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2022-09-24 23:32:00
TPS2390-48V Hot Swap Controller
Features Wide input voltage range: -36 V to -80 V
Transient evaluation to -100 V Programmable current limit Programmable current slew rate Enable input (EN)
Fault Timer Eliminates Nuisance Travel Open-Drain Fault Output (Fault)
Requires few external components
8-pin MSOP package
application
- 48V distributed power system central office exchange wireless base station
Description The integrated circuits TPS2390 and TPS2391 are hot-swappable power supplies optimized for use by managers using nominal -48-V systems. They are designed for a supply voltage range of -80 V and are rated to withstand -100 V. In conjunction with the spikes of an external N-channel FET and sense resistor, they can be used to enable live plug-in cards and power supply modules in the system. Both devices provide load current slew rate and peak amplitude limiting, which are easily programmed with sense resistor values and a single external capacitor. They also provide single-line fault reporting, electrically isolate fault cards, and protect against nuisance overcurrent trips. The TPS2390 locks up in response to current failures, while the TPS2391 periodically retrys in the event of a load failure. ...