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请教，采用UCC5310驱动MOSFET ，输入电压15V， 频率75KHz，占空比45%，输出电源15V，输出端 6脚、7脚 无信号，
波形 绿色为 IN+ ，，黄色为IN—，，是不是输入电容VIn 取值不大对
