TPS2412 Datasheet, PDF (1/21 Pages) Texas Instruments – N+1 and ORing Power Rail Controller

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TPS2412
TPS2413
SLVS728A – JANUARY 2007 – REVISED FEBRUARY 2007
N+1 and ORing Power Rail Controller
FEATURES
• 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
• Industrial Temperature Range: –40°C to 85°C
• Industry-Standard 8-pin TSSOP Package
APPLICATIONS
• N+1 Power Supplies
• Server Blades
• Telecom Systems
• High Availability Systems
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C
DESCRIPTION
The TPS2412/13 controller, in conjunction with an
external N-channel MOSFET, emulates the function
of a low forward voltage diode. The TPS2412/13 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 TPS2412
provides a linear turn-on control while the TPS2413
has an on/off control method.
Applications for the TPS2412/13 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. A TPS2412/13 and N-channel
MOSFET provide this function with less power loss
than a schottky diode.
Accurate voltage sensing and a programmable
turn-off threshold allows operation to be tailored for a
wide range of implementations and bus
characteristics. The TPS2412/13 are lower pin count,
feature reduced versions of the TPS2410/11.
Table 1. Family Features
TPS2412 /13
NOTE: R_(SET) is Optional
Figure 1. Typical Application
Linear gate control
ON/OFF gate control
Adjustable turn-off threshold
Fast comparator filtering
Voltage monitoring
Enable control
Mosfet fault monitoring
Status pin
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
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 © 2007, Texas Instruments Incorporated