TPS2456A
www.ti.com
SLVSBI8 –JULY 2012
Dual 12 V Protection and Blocking Controller
Check for Samples: TPS2456A
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FEATURES
DESCRIPTION
The TPS2456A is a dual, 12 V, channel protection
(hotswap) and blocking (ORing) controller that
provides inrush control, current limiting, overload
protection, and reverse current blocking. The current
sense topology provides both accurate current limits
and independent setting of current limit and fast trip
thresholds.
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TPS2456A Improves Supply Slew-rate
Immunity
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Dual 12 V Protection and Blocking Control
Independent Current Limit and Fast Trip
Blocking Permits ORing of Multiple Inputs
Power Good and Fault Outputs
Analog Current Monitor Outputs
-40°C to 125°C Operating TJ
The ORing control uses an external MOSFET to
block reverse current when an input is shorted.
Systems with closely matched supply voltages and
feed networks can supply current from both supplies
simultaneously.
QFN36 Package
APPLICATIONS
The MONx output provides an accurate analog
indication of load current.
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ATCA Carrier Boards
AdvancedMC™ Slots
Blade Servers
The protection circuits may be used without blocking,
and the blocking may be used without protection.
Internal connections prevent implementation of these
as four fully-independent functions.
Base Stations
Configurable for
The TPS2456 and TPS2456A have identical
Electrical Characteristics tables. The TPS2456A has
reduced sensitivity to input supply slew rate
variations. It is recommended for all new applications.
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1 Source, 2 Loads
2 Sources, 1 Load
2 Sources, 2 Loads
Figure 1. Two Sources, One Load Application Diagram
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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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 © 2012, Texas Instruments Incorporated