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N+1 and ORing Power Rail Controller
The TPS2412/13 controller, in conjuncTIon with anexternal N-channel MOSFET, emulates the funcTIon · Controls Buses From 0.8 V to 16.5 V of a low forward voltage diode. The TPS2412/13 can· Linear or On/Off Control Method be used to combine mulTIple power supplies to a· Internal Charge Pump for N-Channel MOSFET common bus in an N+1 configuraTIon, or to combine· Rapid Device Turnoff Protects Bus Integrity rperdouvinddeasnat liinnepaurt tuprno-wonerconbtursoel sw. hilTehtehe TTPPSS22441123· Positive Gate Control on Hot Insertion has an on/off control method.· Soft Turn on Reduces Bus Transients Applications for the TPS2412/13 include a wide· Industrial Temperature Range: –40°C to 85°C range of systems including servers and telecom.· Industry-Standard 8-pin TSSOP Package These applications often have either N+1 redundantpower supplies, redundant power buses, or both.Redundant power sources must have the equivalentof a diode OR to prevent reverse current during · N+1 Power Supplies faults and hotplug. A TPS2412/13 and N-channel· Server Blades MOSFET provide this function with less power loss· Telecom Systems than a schottky diode.· High Availability Systems Accurate voltage sensing and a programmableturn-off threshold allows operation to be tailored for awide range of implementations and buscharacteristics. The TPS2412/13 are lower pin count,feature reduced versions of the TPS2410/11.
