Patent ID: 9673691
Date: 2017-06-06
CPC Classifications: H02M

Claim:
1. An energy balance controller of an electronic power converter, wherein: the energy balance controller comprises a detection unit, a calculation unit and a reset integral module; the reset integral module includes a reset integrator, a comparator and an RS flip-flop; the input terminals of the calculation unit and the reset integrator are connected to an output terminal of the detection unit, respectively; an output terminal of the calculation unit is connected to one input terminal of the comparator, and an output terminal of a reset integrator is connected to the other input terminal of the comparator; an output terminal of the comparator is connected to the reset terminal of the RS flip-flop; a Q terminal of the RS flip-flop is connected to the reset integrator, and a Q terminal of the RS flip-flop is used for controlling a switching device of the converter to switch on or off; wherein the detection unit is used in the detection unit for detecting an inductor current, an input voltage and an output current of the converter, sending an inductor current signal and an output current signal to the calculation unit, and sending the inductor current signal and an input voltage signal to the reset integrator; the calculation unit is used for receiving the inductor current signal and the output current signal of the detection unit, calculating the sum of an energy stored in an inductor and an output energy according to the inductor current, the output current and given a voltage, and sending a calculation result to the one input terminal of the comparator; the reset integrator is used for receiving the inductor current signal and the input voltage signal of the detection unit, integrating a product of the inductor current and the input voltage, and sending an integral result to the other input terminal of the comparator; and the comparator is used for comparing and judging the output results of the reset integrator and the calculation unit, and sending a judgment result to the reset terminal of the RS flip-flop.