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U4 and U7 can use the same UVLO network #2

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opened 2026-03-09 22:02:23 -07:00 by jordan · 1 comment
jordan commented 2026-03-09 22:02:23 -07:00
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Since U4 and U7 are the same IC drawing from the same power source, and EN is a high input impedance pin, they may use the same network to determine their UVLO. This will save the use of two seperate pots. Alternatively, you may choose to use a seperate battery protection circuit to determine this cut-off, and forgo the UVLO circuitry all-together.

Since U4 and U7 are the same IC drawing from the same power source, and EN is a high input impedance pin, they may use the same network to determine their UVLO. This will save the use of two seperate pots. Alternatively, you may choose to use a seperate battery protection circuit to determine this cut-off, and forgo the UVLO circuitry all-together.
sirlilpanda commented 2026-03-09 23:18:13 -07:00
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they could however, one buck runs at 8 volts and one runs at 5, i would perfer to have a cut off higher for the 8 volt one so that the racer can still report back that it has reached a low enough voltage before fully turning off

they could however, one buck runs at 8 volts and one runs at 5, i would perfer to have a cut off higher for the 8 volt one so that the racer can still report back that it has reached a low enough voltage before fully turning off
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Reference: sirlilpanda/esp32-racer#2
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