Texas Instruments TPS2350DG4

Description
The TPS2350 is a hot swap power manager designed to replace OR-ing diodes in redundant -48-V power systems. It operates with supply voltages ranging from -12 V to -80 V and can withstand transients up to -100 V. The device utilizes two power FETs as low voltage drop diodes to efficiently select between two redundant power supplies, minimizing system power dissipation and voltage drop. Additionally, it employs a third power FET for load current slew rate control and peak current limiting, which can be programmed using a resistor and capacitor. The TPS2350 provides a power good output to enable downstream power converters and a fault output to indicate load issues.

Features
Replaces OR-ing diodes
Operating supply range: -12 V to -80 V
Withstands transients to -100 V
Programmable current limit
Programmable linear inrush slew rate
Programmable UV/OV thresholds
Programmable UV and OV hysteresis
Fault timer to eliminate nuisance trips
Power good and fault outputs
14-pin SOIC and TSSOP package

Applications
-48-V distributed power systems
Central office switching
ONET base stations