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PC USB Ground may damage the converter?

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ivenzar

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Hello,

We are using a converter with two galvanically isolated grounds. Each of this circuit ground is referenced to an isolated power supply ground. (Power supplies have the 3rd/safety terminal at the input connected to earth ground).

Additionally, topology control is performed by a PC through USB bus. PC power supply input is also connected to the earth ground by 3rd/ safety terminal.

Can we have any problems with the earth ground? All power supplies are at the input referenced to same ground. Is USB isolated?

Thanks.
 

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