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Using PF8200 in try-before-buy mode

Question asked by adevries on Aug 23, 2019
Latest reply on Aug 29, 2019 by Jinyu Zhang

Hello,
In my current project I want to use the PF8200 in TBB/development mode initially. I want to use the programming interface on the KITPF8200FRDMPGM to program the PMIC, but I don't want the KITPF8200FRDMPGM to provide power to my board.

My plan is to prevent the KITPF8200FRDMPGM powering VDDIO by removing the jumper from J6, and prevent VIN being powered by removing the jumper from J8. I will then locally supply 5V to VIN and 3.3V to VDDIO. I have also been following the suggested programming interface found in figure 5 of AN12286 (see attached image).


Here are my questions:

1. If I power the PF8200 locally as I described, should I still be able to use the KITPF8200FRDMPGM programming interface?
2. From the datasheet, I see that VIN has certain rise time requirements (VIN must reach UVDET in 10 to 1500us). Does VDDIO have any similar requirements?
3. Does it matter whether VIN or VDDIO is applied first?

 

Thanks

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