EEVblog Electronics Community Forum
Electronics => Projects, Designs, and Technical Stuff => Topic started by: rsd on January 06, 2021, 06:25:43 pm
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I am looking for a circuit to protect battery powered devices. It should be able to switch off power supply in case of low voltage and remain off until the battery is removed and plugin in again.
The under-voltage detection itself is not final my circuits. It is just for reference, i don't know exactly what i will use in the end.
Since i am looking for minimal current consumption after shutoff i powered all circuits behind the power switch. The only leakage after shutoff is the mosfet leakage itself.
I designed the circuit which uses a p-channel mosfet for the power switch first and then moved to the n-channel version. I would like to use an n-channel for the power mosfet.
I am asking for some tipps or concerns of the internet 8) In the end I can not be the first one to need a circuit like that so be free to show your google skills, which i don't seem to have.
With the p-channel circuit I am kinda happy, but the n-channel circuit is in my opinion just a shit show :--