The TPS55340-EP is a monolithic, non-synchronous switching regulator with integrated 5-A,
40-V power switch. It can be configured in several standard switching-regulator topologies,
including boost, SEPIC and isolated flyback. The device has a wide input voltage range to support
applications with input voltage from multi-cell batteries or regulated 3.3-, 5-, 12-, and 24-V
The TPS55340-EP regulates the output voltage with current mode pulse width modulation
(PWM) control, and has an internal oscillator. The switching frequency of PWM is set by either an
external resistor or by synchronizing to an external clock signal. The user can program the
switching frequency from
100 kHz to 1.2 MHz.
The device features a programmable soft-start function to limit inrush current during
start-up and has other built-in protection features including cycle-by-cycle over current limit and
The 5-A, 40-V TPS55340-EP boost converter is pin-to-pin compatible with the 3-A, 40-V
TPS61175, and it extends the maximum input voltage from 18 to 32 V.
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