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How to shutdown data when isoPower is disabled and prevent parasitic via SCL/SDA ESD diodes?

Question asked by yellowsky on Mar 29, 2018
Latest reply on Apr 3, 2018 by yellowsky

Hi,

 

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

you recommend to switch VDDP separately via a transistor.

 

However, in ADM3260: separate voltages for VIN and VDDP you mention the ESD diodes, and that it basically is not possible (at least not with an active upstream bus).

 

I'm using the ADM3260 and goal is for it to draw zero current when "off", that's why I want to power down VDDP in the first place.

 

Thanks,

Patrick

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