Datasheet

TPS62230, TPS62231, TPS62232, TPS62233, TPS62234, TPS62235, TPS62236

TPS62237, TPS62238, TPS62239, TPS622310, TPS622311, TPS622312

TPS622313, TPS622314, TPS622315, TPS622316, TPS622317, TPS622318

SLVS941E –APRIL 2009–REVISED DECEMBER 2010

www.ti.com

The EN input can be used to control power sequencing in a system with various DC/DC converters. The EN pin

can be connected to the output of another converter, to drive the EN pin high and getting a sequencing of supply

rails.

SHORT-CIRCUIT PROTECTION

The TPS6223X integrates a High Side and Low Side MOSFET current limit to protect the device against heavy

load or short circuit. The current in the switches is monitored by current limit comparators. When the current in

the P-channel MOSFET reaches its current limit, the P-channel MOSFET is turned off and the N-channel

MOSFET is turned on to ramp down the current in the inductor. The High Side MOSFET switch can only turn on

again, once the current in the Low Side MOSFET switch has decreased below the threshold of its current limit

comparator.

THERMAL SHUTDOWN

As soon as the junction temperature, T

, exceeds 150°C (typical) the device goes into thermal shutdown. In this

mode, the High Side and Low Side MOSFETs are turned-off. The device continues its operation when the

junction temperature falls below the thermal shutdown hysteresis.