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/78/886201245901763.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">MOS管驱动直流电机烧坏问题??
电路图如附图,电机为有刷直流电机,负载电流0.3-0.6A,功率30-65W,单片机PWM调速,带堵转检测,现在问题是:偶尔会有1-2pcs在测试中会出现mos击穿,TLP250,以及驱动部分的电阻都有击穿现象,最糗的是,今天准备去做EMC测试,两台样机都烧毁,汗啊,各位帮忙分析下,感激不尽!
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