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Old 05-17-2019, 10:33 PM   #32
Badcaps Veteran
Join Date: Dec 2010
City & State: Alberta
My Country: Canada
Posts: 1,745
Default Re: DPS5020 dual power supply build

All you do is measure ACV between each output to earth ground, with the DPS on but output disabled. That will tell you if it's floating at high potential, enough to damage the mosfet.
I take extra care against things floating up or ESD hits to the DPS jacks when I'm connecting things. The mosfet takes the hit. Normally it's not a concern in power supplies because things are always connected both jacks- there is no mosfet switch that can be off. I could be wrong too.
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