Radiation-proof multifunctional power supply module circuit

The utility model relates to the field of power supplies, in particular to an anti-radiation multifunctional power supply module circuit. Comprising a buck type PWM modulator, a boost diode, a Schottky diode, an inductor, a filter capacitor, a first input capacitor, a second input capacitor, a first output capacitor, a second output capacitor, a third output capacitor, a fourth output capacitor, a fifth output capacitor and a boost capacitor. The buck type PWM modulator, the Schottky diode, the inductor, the first input capacitor, the second input capacitor, the first output capacitor, the second output capacitor, the third output capacitor, the fourth output capacitor and the fifth output capacitor form a Buck converter or Bcuk-Boost converter topology; the filtering capacitor realizes a filtering function; the boost capacitor and the boost diode are connected with a Boost pin and an SW pin of the buck type PWM modulator; according to the invention, miniaturization and light weight of the system can be reali