Connecting a Generator in parallel with a battery

Support Voltage regulators
1

I want to connect a generator (14V) in parallel with a battery (3S) such that the battery will power the system when the generator is stopped.

You have a battery oring circuit (Pololu Power ORing Ideal Diode Pair, 4-60V, 6A) - but the current rating is too low. Can I use 2 ideal diode circuits in parallel (Pololu Reverse Voltage Protector, 4-60V, 12A)? Or is some extra control needed?

2

Hello.

Using two of our higher power ideal diode reverse voltage protectors in parallel like you proposed should be fine as long as you are okay with the load always being supplied with the higher voltage source. Our ORing board itself is essentially just two of the ideal diode reverse voltage protectors in parallel. However, please note that you linked to one of our reverse voltage protectors that does not have an ideal diode to block reverse current. For reference, here is a link to the category page with all of our reverse voltage protectors, and all the products with reverse current blocking have “Ideal Diode” in the product name:

- Patrick

3

Thanks, I did purchase some of the reverse voltage protection devices with ideal diodes. I want the generator, that should be higher voltage to carry the load, until it is shut down, and have the battery carry the load at that time.

Thanks

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