This file is the application guide for TPS2398/TPS2399, introducing the main features and application scenarios of the product
The TPS2398 and TPS2399 are integrated circuits designed as hot swap power managers for use in nominal -48-V systems. They incorporate an improved circuit breaker response that provides rapid protection from short circuits while enabling plug-ins to tolerate large transients generated by sudden switchover to a higher voltage supply.
These devices are rated to withstand spikes up to -100 V and operate with input supply ranges of -36 V to -80 V. They provide load current slew rate and peak magnitude limiting, easily programmed by sense resistor value and a single external capacitor.
| Input Supply Range | -36 V to -80 V |
|---|---|
| Transient Rating | -100 V |
| Operating Junction Temperature Range | -55°C to 125°C |
The TPS2398 latches off in response to current faults, while the TPS2399 periodically retries the load in the event of a fault.
The threshold voltage for the enable input (EN) when rising is typically 1.4 V.