TI团队您好!
我重新设计了一个原理图,隔离部分全部由ISOW7842的VISO供电。目前的情况是,开启隔离端负载-3V3升压24V电路后,芯片有明显嗡嗡声,VISO输出电压纹波如下:
而关闭VISO负载(升压电路)后,纹波正常。
这是否是隔离端总电流超过了75mA,导致VISO输出能力不足?
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