用TPA4411过程中,发现静态电流居然达100MA左右,这对电池供电的产品来说,要命啊,是芯片特性还是芯片问题?求解。。。。。。,急
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Hi, Chaosheng,
TPA4411的shutdown 模式下的电流最大仅为1uA。工作模式下,如果不接负载,供电电流会小于10mA。
你检查下,看是芯片损坏还是外围电路引起的这个问题?
你是否把芯片的底部pad接地了? 去掉试一试。
datasheet明确写到:Exposed pad must be soldered to a floating plane. Do NOT connect to power or ground