半桥电路MOS管漏源电压尖峰大,如何解决?
我做的是双向DC-DC变换器,变压器频率20K,2KW,MOS管关断时尖峰电压过大,当直流输入电流为10A时,尖峰电压有10V,MOS额定电压为80V,加了RCD缓冲电路,对尖峰电压基本没影响,请问各位高手,如何解决啊?下午附上波形图.
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@themaster
用数字电桥10K测得变压器原边漏感,为0.4微亨
开关管漏源电压波形
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@themaster
开关管漏源电压波形[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/80/3508111250424779.gif');}"onmousewheel="returnimgzoom(this);">[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/80/3508111250424792.gif');}"onmousewheel="returnimgzoom(this);">
主电路原理图
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