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[Solved] Witty Pi 4 DC/DC Converter Failure

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(@bobshort)
Posts: 1
New Member
Topic starter
 

I just got a Witty Pi 4 to power a Pi installed in a vehicle. I wired it up to the vehicle power (~ 12.8V to 14V depending on running).

 

It worked great for a few days and then failed. It looks like the MP4462 is kind of cooked. I can still power the witty from the USB connection but the XH2.54 is dead.

 

My understanding is the Witty Pi 4 should handle up to 30V on the XH2.54? Am I doing something incorrect or is this just random hardware failure?

 

Thanks!

1709930629-Witty.jpg
 
Posted : 08/03/2024 9:43 pm
(@admin)
Posts: 268
Member Admin
 

MP4462 can actually handle up to 36V. The only possibility in my mind is you reversed the input voltage polarity.

 
Posted : 09/03/2024 8:49 am
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