Power Rail Controller 8-Pin TSSOP Tube

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.

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

APPLICATIONS

• N+1 Power Supplies
• Server Blades
• Telecom Systems
• High Availability Power Modules