PCB 图
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HI
静态电流应该是4mA以内。
datasheet没有空载波形,但是造成空载功耗过大一般的原因是芯片质量。
建议你让芯片工作在降压模式,并且让芯片工作在FCCM模式,将驱动空载波形放上来看看?