建立了开环的BUCK电路模型，并分别以不同参数模拟了DCM和CCM模式下的buck模型。(An open loop BUCK circuit model is established, and buck models under DCM and CCM modes are simulated with different parameters.)

XMC4400_Digital_CCM_PFC_v1_0_0数字无桥功率因数校正例程(Digital PFC control demo code)