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Capacitor between High and low voltage sections

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berni80

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Hi,

In an isolated DC/DC that converts high voltage (ie 300V) to low voltage (ie 12V),
is often present a capacitor between High and low voltage sections.

Have you noticed it?
Which is its function?

Thanks
 

FvM

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In most cases, it's necessary to keep the common mode switching noise generated by the converter within acceptable limits.
 

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