The TPS54232 is a 28-V, nonsynchronous buck converter that integrates a low
RDS(on) high-side MOSFET. To increase efficiency at light loads, a
pulse-skipping Eco-Mode feature is automatically activated. Furthermore, the 1-µA shutdown supply
current allows the device to be used in battery-powered applications. Current mode control with
internal slope compensation simplifies the external compensation calculations and reduces component
count while allowing the use of ceramic output capacitors. A resistor divider programs the
hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits
voltage overshoots during startup and transient conditions. A cycle-by-cycle current limit scheme,
frequency fold back, and thermal shutdown protect the device and the load in the event of an
overload condition. The TPS54232 is available in an 8-pin SOIC package.
