MAX5079 - Maxim Integrated Products

MAX5079 ORing MOSFET Controller

The MAX5079 ORing MOSFET controller replaces ORing diodes in high-reliability redundant, parallel-connected power supplies. Despite their low forward-voltage drop, ORing Schottky diodes cause excessive power dissipation at high currents. The MAX5079 allows for the use of low-on-resistance n-channel power MOSFETs to replace the Schottky diodes. This results i.

Features

include an OVP flag to facilitate shutdown of a failed power supply due to an overvoltage condition, and a PGOOD signal that indicates if VIN is either below the undervoltage lockout or VBUS is in an overvoltage condition. The MAX5079 operates over the -40°C to +85°C temperature range and is available in a space-saving 14-pin TSSOP package. ♦ 2.75V to 13.2V Input ORing Voltage ♦ 1V to 13.2V Input ORing Voltage with 2.75V Aux Voltage Present ♦ 2A MOSFET Gate Pulldown Current During Fault Condition ♦ Ultra-Fast 200ns, MOSFET Turn-Off During Fault Condition ♦ Supply Undervoltage and Bus Overvolta.