Part list for blown Ranger

[holziholz]

Hello,

due to an unfortunate case of an non isolating USB isolator my Current Ranger got blown up in a very serious way. The SAM has a hard ground fault on it's supply rail and one of the power mosfets is missing a part of it's housing.

Since Welectron is out of stock right now I need to quickly repair my ranger. Hench I went through the schematic and did some educated guessing where I could. Still I would like to confirm my part selection for a complete overhaul of all silicon based components on the board.

Here is the parts I have identified so far:

1x ATSAMD21G18A-AU - Mouser 556-ATSAMD21G18A-AU
1x MCP73831T-2ACI/OT - Mouser 579-MCP73831T-2ACIOT
1x TC7660EOA713 - Mouser 579-TC7660EOA713
2x SI7615ADN-T1-GE3 - Mouser 78-SI7615ADN-T1-GE3
2x MAX4239AUT+T - Mouser 700-MAX4239AUT+T
10x SI2347DS-T1-BE3 - Mouser 78-SI2347DS-T1-BE3
2x BSS123 - Mouser 512-BSS123

I'm missing the 3V3 regulator, but after desoldering the SAM i can measure 3V3 on the supply rail, so I would expect the chip to be okay. Same for the TC7660 IC. +4 V go in -4 V comes out, seems to be legit. The charging IC seems also to be fine.

The IRLML5203 is currently not in stock and also discontinued, why I want to replace them with the SI2347 fets.

Is this all I need and the correct selection?

Best regards
Stefan

[Felix]

Yes that looks good.
I would maybe choose a more rugged FET like Si2365. Also, if you measure them and find no shorts they should be OK, I've only seen one of those ever short in very very few cases (maybe 1-3 that I can vaguely recall).
Wouldn't be a bad idea, if you can afford, to double that BOM just in case you need anything again in the future.

[holziholz]

Thank you for the fast reply.
Parts are ordered and on their way.

[holziholz]

And the Ranger is fixed. Programming was a little challenging but with the right tools a doable job. After calibration the measurements are looking good. I'm happy and now I have a meeting with the non isolating USB isolator on a shooting range.