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BQ76PL536EVM-3隔离模块

Other Parts Discussed in Thread: BQ76PL536A, BQ76PL536EVM-3

 你好:
       我最近购买了BQ76PL536A芯片,并参照配套的评估板BQ76PL536EVM-3的电路图进行设计,我注意到评估板中isolation模块将USB或外接电源的5V电平经过逆变、变压、整流又变回了5V电平供给iso7241隔离芯片,这样做有什么特殊的用意吗?可不可以直接用BQ芯片的5V输出来作为iso7241的电源呢?谢谢!