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N+1 and ORing Power Rail Controller with Enable


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
  • Controls Buses From 3 V to 16.5 V
  • External Enable
  • N-Channel MOSFETControl
  • Rapid Device Turnoff Protects Bus Integrity
  • Programmable Turn-Off Threshold
  • Soft Turn on Reduces Bus Transients
  • Industrial Temperature Range: –40°C to 85°C
  • 8-Pin TSSOP and SOIC Packages
    • N+1 Power Supplies
    • Server Blades
    • Telecom Systems
    • High Availability Power Modules

Texas Instruments  TPS2419D

The TPS2419 controller, in conjunction with an external N-channel MOSFET, provides the reverse current protection of an ORing diode with the efficiency of a MOSFET. The TPS2419 can be used to combine multiple power supplies to a common bus in an N+1 configuration, or to combine redundant input power buses.

Applications for the TPS2419 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.

Accurate voltage sensing and a programmable turn-off threshold allows operation to be tailored for a wide range of implementations and bus characteristics. The TPS2419 brings out an enable pin which allows the system to force the MOSFET off under light-load, high noise conditions.