8.1 Overview

The TPS23525 is an integrated hot swap and Dual OR-ing controller that enables high power telecom systems to comply with stringent transient requirements. The soft start cap disconnect allows soft start at start-up and disconnects the soft start cap during normal operation. This allows for the use of smaller hot swap FETs without hurting the transient response. The 400 µA sourcing current allows fast recovery, which helps to avoid system resets during lightning surge tests. The dual current limit makes it easier to pass brown outs and input steps such as required by the ATIS 0600315.2013. Finally, the TPS23525 offers accurate under voltage and over voltage protection with programmable thresholds and hysteresis.

The TPS23525 integrates a dual OR-ing controller, making it ideal for –48 V systems fed by two redundant supplies.The OR-ing controller will turn off if any reverse current is detected.