Voltage conversion circuit

The embodiment of the utility model discloses a voltage conversion circuit. The voltage conversion circuit comprises: an energy supply module configured to output an energy supply voltage in response to an input voltage; a control module configured to output a control signal and a drive signal in response to the energy supply voltage; a switching module configured to output the input voltage in response to the control signal; the voltage transformation module is configured to convert the input voltage into output voltage; the energy supply module is electrically connected to the control module, the control module is electrically connected to the switch module, and the switch module is electrically connected to the voltage transformation module. Through the above mode, the embodiment of the utility model can ensure that the circuit has enough starting work energy to ensure the normal work of the control module when the input voltage is relatively high under the condition that an inductor or a transformer is no