TPS2456A Datasheet, PDF (1/32 Pages) Texas Instruments – Dual 12 V Protection and Blocking Controller

TPS2456A
www.ti.com
SLVSBI8 – JULY 2012
Dual 12 V Protection and Blocking Controller
Check for Samples: TPS2456A
FEATURES
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•2 TPS2456A Improves Supply Slew-rate
Immunity
• 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 T_J
• QFN36 Package
APPLICATIONS
• ATCA Carrier Boards
• AdvancedMC™ Slots
• Blade Servers
• Base Stations
• Configurable for
– 1 Source, 2 Loads
– 2 Sources, 1 Load
– 2 Sources, 2 Loads
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.
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.
The MONx output provides an accurate analog
indication of load current.
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.
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.
Figure 1. Two Sources, One Load Application Diagram
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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.
AdvancedMC is a trademark of PICMG.
2
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