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) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1148887704.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">用开关电源带功放的兄弟帮忙看看这是否是环路问题
负载为相位相差120度的两路功放,电源用2路开关电源正负供电,下图是一路开关电源内部的采样送到过流保护的波形,当带一定负荷时,如图出现不正常的尖峰突起,而且会逐渐增大直到保护,请问有人遇到过这样的问题么?是否是环路参数不合适引起的在交越点的谐振?我更改过环路参数但貌似没作用.电源是电压型的半桥电路.请路过知道的兄弟帮忙,谢谢!
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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) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1148887704.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">