| FET | External |
| Vin (Min) (V) | -80 |
| Vin (Max) (V) | -20 |
| Vabsmax_cont (V) | -100 |
| Current limit (Min) (A) | 0.01 |
| Current limit (Max) (A) | 500 |
| Overcurrent response | Circuit breaker, Current limiting |
| Fault response | Auto-retry |
- Wide Input Supply Range: –20 V to –80 V
- Transient Rating to –100 V
- Insertion/Removal Detection Delay
- Extended Debounce Delay
- Programmable Current Limit
- Programmable Current Slew Rate
- Programmable UV/OV Thresholds/Hysteresis
- Open-Drain Power Good (PG)\ Output
- Fault Timer to Eliminate Nuisance Trips
- Open-Drain Fault Output (FAULT)\
- 14-Pin TSSOP package
- APPLICATIONS
- –48-V Distributed Power Systems
- Central Office Switching
- Wireless Base Station
The TPS2393A integrated circuit is a hot swap power manager optimized for use in nominal ?48-V systems. It operates with supply voltage ranges from ?20-V to ?80-V, and is rated to withstand spikes to ?100 V. In conjunction with an external N-channel FET and sense resistor, it can be used to enable live insertion of plug-in cards and modules in powered systems. It 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 and removal detection. The associated debounce delay applies to both actions. A power good (PG)\ output enables downstream converters. The TPS2393A also provides the basic hot swap functions of electrical isolation of faulty cards, filtered protection against nuisance overcurrent trips, and single-line fault reporting.
The TPS2393A periodically retries the load in the event of a fault.
