设计了一个移动电源+无线充电产品,做了WPC 1.0.3和1.1标准.BQ500211时工作正常,BQ500211A时不能调通FOD功能,其他功能正常.
具体描述:跟正常的WPC1.1产品比较后发现,PWM一直是持续工作的,接触到金属后不能停止无线发射.
外部电路已经详细查过,PIN43接的是200K oHM 电阻! 请帮忙分析下....
附件是原理设计.
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