Push-pull converter

A type of step-down converter with a circuit configuration where the primary and secondary sides are isolated by a transformer. It uses multiple switching components, an externally excited oscillation method, and PWM control. Mainly used as an AC-DC converter, it functions similarly to a forward converter but can supply more output power. Compared to other types of switching converters, it offers the advantage of delivering higher power, but has the drawback of requiring more components, leading to a more complex circuit. It has two switches that alternately turn on and off with the same duty cycle to supply power to the load. While it does not generate kickback voltage, a voltage more than twice the input voltage is applied to the switches, thus requiring high-voltage-tolerant switches. For this reason, it is often used in electrical and electronic devices with low input voltage.