Esp32 and software current limiting

hereiam
Posts: 10
Joined: Mon Apr 19, 2021 9:26 pm

Esp32 and software current limiting

Postby hereiam » Fri Feb 04, 2022 8:36 pm

Hello guys,

I'm working on a project with a esp32 pico v3.
I would like to limit the current drawn by the MOSFETs by measuring the current consumed with an ACS71240KEXBLT-010B3. This component measures the current in +/-10A and sends a proportional voltage to the esp32.
I would like to know if this solution can replace physical fuses for an industrial application

Thank you for your feedback

WiFive
Posts: 3529
Joined: Tue Dec 01, 2015 7:35 am

Re: Esp32 and software current limiting

Postby WiFive » Fri Feb 04, 2022 11:36 pm

You can do it but it wouldn't replace fuses for safety purposes the control loop is too big and unreliable.

xien551
Posts: 69
Joined: Wed Feb 02, 2022 4:04 am

Re: Esp32 and software current limiting

Postby xien551 » Sat Feb 05, 2022 3:25 am

Absolutely not, You may not using this solution in industrial application, otherwise causing people death.
You may not using this solution in consumer application, otherwise coursing Lawsuits and damages.

If you want to do this, please do the product testing in a qualified organization and get a certificate of approval.

You're brave, but it's against the law.

hereiam
Posts: 10
Joined: Mon Apr 19, 2021 9:26 pm

Re: Esp32 and software current limiting

Postby hereiam » Sat Feb 05, 2022 11:14 pm

Hello everyone, thank you for your very informative comments.

Circuit protection is provided by a general 20A-12V fuse. This fuse has been planned since the beginning of my project.

I will provide 4 fuses for the 4 outputs to have selectivity and abandoned my initial idea.

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