TPS2412D Datasheet, PDF (1/24 Pages) Texas Instruments – N+1 and ORing Power Rail Controller

TPS2412
TPS2413
www.ti.com.......................................................................................................................................... SLVS728B – JANUARY 2007 – REVISED SEPTEMBER 2008
N+1 and ORing Power Rail Controller
FEATURES
1
• 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
• 8-Pin TSSOP and SOIC Packages
APPLICATIONS
• N+1 Power Supplies
• Server Blades
• Telecom Systems
• High Availability Systems
A
C
TPS2412 /13
NOTE: R_(SET) is Optional
Figure 1. Typical Application
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,
reduced feature versions of the TPS2410/11.
Table 1. Family Features
Linear gate control
ON/OFF gate
control
Adjustable turn-off
threshold
Fast comparator
filtering
Voltage monitoring
Enable control
Mosfet fault
monitoring
Status pin
TPS2410 TPS2411 TPS2412 TPS2413
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
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.
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