| 第一次做移相开关电源，现在遇到两个问题，第一就是空载损耗大，20Ｗ损耗，设计功率1000Ｗ，网上说空载损耗大是移相通病。第二，只要将ＲＡＭＰ引脚与ＣＳ引脚用1Ｋ电阻连接，出现工作异常，调了许久的曲线都不行，反尔不连接此电阻，通过调试，开关电源工作正常（平均电流模式）。求各位大神指教！！！ |
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ucc3895 ramp引脚 问题不解
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