TPS2456
www.ti.com
SLVSA78C – MARCH 2010 – REVISED JULY 2012
Dual 12 V Protection and Blocking Controller
Check for S...
TPS2456
www.ti.com
SLVSA78C – MARCH 2010 – REVISED JULY 2012
Dual 12 V Protection and Blocking Controller
Check for Samples: TPS2456
FEATURES
1
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 Junction
Temperature 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 TPS2456 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.
INA
CINA 0.1mF
RSENSEA RSETA
M1A RG1A
M2A RG2A
INA SENPA
SETA SENMA GAT1A GAT2A
OUTA
ENA ORENA
CTA 33nF
CTA
V...