The invention relates to a
flying capacitor control circuit, and the circuit comprises a basic circuit which comprises a first
capacitor, a second
capacitor, and a third
capacitor, and the first capacitor and the second capacitor are connected in series; the
control circuit comprises a first switch unit, a second switch unit, a third switch unit and a fourth switch unit; one end of the first switch unit is connected to the
anode of the first capacitor, and the other end is connected to the
anode of the third capacitor through the first
resistor; one end of the second switch unit is connected between the first capacitor and the second capacitor, and the other end is connected to the
anode of the third capacitor through the second
resistor; one end of the third switch unit is connected between the first capacitor and the second capacitor, and the other end is connected to the
cathode of the third capacitor through the third
resistor; one end of the fourth switch unit is connected to the
cathode of the second capacitor, and the other end is connected to the
cathode of the third capacitor through the fourth resistor. By accurately controlling the
capacitor voltage, the circuit stability is improved, the energy waste is reduced, and efficient
voltage regulation is realized.