Energy control circuit for DC-DC power converter and control method thereof

The invention belongs to the field of control of DC-DC power converters, and particularly relates to an energy control circuit for a DC-DC power converter and a control method for controlling the circuit by taking whether actual output energy of the circuit is equal to expected energy required by a circuit load or not as a criterion. The energy control circuit consists of a DC-DC converter main circuit, an input energy detection circuit, an output energy detection circuit, an energy analysis circuit, a pulse width modulation signal generation circuit and a logical driving circuit, wherein an input filter capacitor C1, a power electronic device K1, a flywheel diode D1, a filter inductor L1 and an output filter capacitor C2 form the DC-DC power converter main circuit. According to the energy control circuit and the control method thereof, the switching state of the power electronic device in the main circuit is further controlled by taking whether energy output by the DC-DC converter meets a requirement of a lo