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N+1 and OR-ing Power Rail Controller


Package | PIN: PW | 14
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $3.82
10-24 $3.44
25-99 $3.20
100-249 $2.80
250-499 $2.63
500-749 $2.23
750-999 $1.89
1000+ $1.80


  • 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 Turn on Reduces Bus Transients
  • Input Voltage Monitoring
  • Shorted Gate Monitor
  • MOSFET Control-State Indicator
  • Industrial Temperature Range: -40°C to 85°C
  • Industry-Standard 14-Pin TSSOP Package
    • N+1 Power Supplies
    • Server Blades
    • Telecom Systems
    • High Availability Systems

Texas Instruments  TPS2411PW

The TPS2410/11 controller, in conjunction with an external N-channel MOSFET, emulates the function of a low forward-voltage diode. The TPS2410/11 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 TPS2410 provides a linear turn-on control while the TPS2411 has an on/off control method.

Applications for the TPS2410/11 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. These redundant power sources must have the equivalent of a diode OR to prevent reverse current during faults and hotplug. A TPS2410/11 and N-channel MOSFET provide this function with less power loss than a schottky diode.

Accurate voltage sensing, programmable fast turn-off threshold, and input filtering allow operations to be tailored for a wide range of implementations and bus characteristics.

A number of monitoring features are provided to indicate voltage bus UV/OV, ON/OFF state, and a shorted MOSFET gate.