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Diode OR on FB pin of switching controller to add constant current regulation

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Psi:
Ok, so I have thrown together a prototype SCH and PCB to test.

Anyone have any comments or suggestions?
The component values here are mostly TBD and not valid.

Specs are to be
- SEPIC
- 10-30V input
- 14V output with 3A constant current limit
- Battery rev polarity protection on input and output

Terry Bites:
Use Mosfets instead of diodes. You can get devcies designed for MOSFET ORING with OC protection. eg LTC4235. Hot swap contollers abound thses days. They are in the $5 range.

Psi:

--- Quote from: Terry Bites on October 17, 2021, 10:53:39 am ---Use Mosfets instead of diodes. You can get devcies designed for MOSFET ORING with OC protection. eg LTC4235. Hot swap contollers abound thses days. They are in the $5 range.

--- End quote ---

I did consider doing that for the two inputs, but I came to the conclusion that it would cost quite a bit more than using 2 diodes and because it's SEPIC the vdrop really doesn't matter much and for this application the efficiency isn't super critical.

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