经典buck-boost电路原理
时间: 2023-08-10 15:09:27 浏览: 131
经典的Buck-Boost电路是一种输出电压既可低于也可高于输入电压的单管不隔离直流变换器。它由Buck变换器和Boost变换器串联而成,合并了开关管。当开关管关闭时,电感电流从地流向负载和电容,在流经二极管后回到电感。这个过程包括了电感释放能量和电容充电的过程。因此,Buck-Boost电路的输出电压可以表示为Uoff=Uo-Ud,其中Uoff是输出电压,Uo是输入电压,而二极管的压降一般可以忽略不计。这就是经典Buck-Boost电路的原理。\[1\]\[2\]\[3\]
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