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N+1 and OR-ing Power Rail Controller


Package | PIN: D | 8
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $3.05
10-24 $2.75
25-99 $2.56
100-249 $2.24
250-499 $2.10
500-749 $1.79
750-999 $1.51
1000+ $1.44


  • Control External FET for N+1 and ORing
  • Wide Supply Voltage Range of 3 V to 16.5 V
  • Controls Buses From 0.8 V to 16.5 V
  • Linear or On/Off Control Method
  • Internal Charge Pump for N-Channel MOSFET
  • Rapid Device Turnoff Protects Bus Integrity
  • Positive Gate Control on Hot Insertion
  • Soft Turnon Reduces Bus Transients
  • Industrial Temperature Range: –40°C to 85°C
  • 8-Pin TSSOP and SOIC Packages

Texas Instruments  TPS2413D

The TPS2412/13 controller, in conjunction with an external N-channel MOSFET, emulates the function of a low forward voltage diode. The TPS2412/13 can be used to combine multiple power supplies to a common bus in an N+1 configuration, or to combine redundant input power buses. The TPS2412 provides a linear turnon control while the TPS2413 has an on/off control method.

Applications for the TPS2412/13 include a wide range of systems including servers and telecom. These applications often have either N+1 redundant power supplies, redundant power buses, or both. Redundant power sources must have the equivalent of a diode OR to prevent reverse current during faults and hotplug. A TPS2412/13 and N-channel MOSFET provide this function with less power loss than a schottky diode.

Accurate voltage sensing and a programmable turnoff threshold allows operation to be tailored for a wide range of implementations and bus characteristics. The TPS2412/13 are lower pin count, reduced feature versions of the TPS2410/11.