Other Parts Discussed in Thread: DRV8844
DRV8844这颗芯片的EN脚初始状态是GND,在芯片上电的瞬间所有OUT脚会被拉到GND,过40us左右,然后才恢复高阻,这样是正常的吗
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DRV8844这颗芯片的EN脚初始状态是GND,在芯片上电的瞬间所有OUT脚会被拉到GND,过40us左右,然后才恢复高阻,这样是正常的吗
有条件的话可以购入DRV8844EVM进行对比测试。
如果EVM没有这个问题,那很可能就是客户设计存在问题。可以对比一下EVM的电路设计。下面是详细的设计文件