一种高功率密度零电压开关图腾柱功率因数校正变换器

The power factor correction (PFC) circuit is an essential component in high-power supplies with nonlinear loads, occupying nearly half the size of a typical power supply. To minimize the size of passive components in PFC converters, the switching frequency must be increased to several hundred kHz, a challenge even when employing gallium nitride (GaN) devices under hard-switching conditions. This a...