这是原理图,麻烦给分析一下哪里有问题,不带负载能够正常输出30V,电压带一个80W/30欧的功率电阻后电压降到12V,这是哪里设计的有问题,输入电压35-100V
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你的电感饱和没?
你是直接加大负载还是负责慢慢从小到大加的?可以先试一下小负载时电压是否会下降,如果负载带到一定程度时输出电压下降可能是电感饱和。