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太阳能逆变器母线电压检测,非隔离运放的供电问题

Other Parts Discussed in Thread: AMC1301, AMC1311

您好,最近了解到一些客户在逆变器或者伺服的应用中,并没有使用隔离的运放或者隔离ADC来测量母线电压。

如果是这种情况,如果非隔离的运放的电源从反激的二次侧接过来,而运放的输入端接入分压电阻,与母线的地线相连,那么反激拓扑起到的隔离作用也没有了。

请问实际应用中可以这么做吗?