1FEATURES
• 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

DESCRIPTION
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.