isoPower FAQ: Does the data shut down when the isoPower is disabled?

Document created by rdowning on Mar 25, 2013
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No, the data channels are a separate chip set, so they can be run independently of what is happening with the isoPower converter.  On side 1 the data channels will still draw quiescent current and drive data to side 2.  On side 2, if power is available from a source other than Viso, it will continue to operate normally.  If side 2 is powered by Viso, it will shut down when Viso is disabled, but side 1 power must be switched separately if you need low power from the data section.  A pass transistor controlled from the Pdis signal should be used to turn power off to Vdd1.