基于PWM与移相组合控制策略的四开关Buck-Boost变换器建模与设计

The four-switch buck–boost (FSBB) converter has the functions of voltage step-up and step-down as well as positive output, which is suitable for the applications with wide input voltage range. With the combined pulsewidth modulation (PWM) and phase-shift control, all the power switches can realize zero-voltage switching with minimized inductor ripple. In this article, a small-signal model of FSBB ...