LM2678带1.5A负载启动电压无法达到设定值,并且电感啸叫,测量波形,发现电感前波形特别乱;如果先启动再加负载就正常了,负载可以达到5A。原理图如下,电感使用的是MSS1278-223MLB
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LM2678带1.5A负载启动电压无法达到设定值,并且电感啸叫,测量波形,发现电感前波形特别乱;如果先启动再加负载就正常了,负载可以达到5A。原理图如下,电感使用的是MSS1278-223MLB