TPS2419 Datasheet, PDF (1/21 Pages) Texas Instruments – N+1 and ORing Power Rail Controller with Enable

TPS2419
www.ti.com
SLVS998A – FEBRUARY 2010 – REVISED MARCH 2010
N+1 and ORing Power Rail Controller with Enable
Check for Samples: TPS2419
FEATURES
1
• 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.
Enable
EN
Figure 1. Typical Application
Table 1. Family Features
Enable input
Linear gate control
ON/OFF gate
control
Turnoff
comparator
filtering
Voltage monitoring
MOSFET fault
monitoring
Status pin
Independent
Supply Pin
'2410
√
√
√
√
√
√
√
'2411
√
√
√
'2412 '2413
√
√
√
√
√
√
√
√
'2419
√
√
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated