Question regarding custom PCB design for power management.

ujurmsde
Posts: 38
Joined: Tue Jan 19, 2021 6:37 am

Question regarding custom PCB design for power management.

Postby ujurmsde » Sun Jul 24, 2022 1:33 pm

I have a question while I am currently developing own custom ESP32-s3 based design.

The question is about how to manage power requirement for the board and external RGB LED strips connected via the board.

The thing is that the LED strip may require currents upto five to seven Ampere, while the board only requires less than 1A.

On board I am using a 5V to 3.3V regulator chip to convert the voltage so that I can power the board via USB.
What about the LED strip? What are my options? I will need one GPIO for driving these strips and let's say I keep comman ground. What about power line which powers the main board on less current and LED strips with current more than 5Amps?

ESP_LJH
Posts: 387
Joined: Tue May 18, 2021 9:21 am

Re: Question regarding custom PCB design for power management.

Postby ESP_LJH » Wed Jul 27, 2022 10:03 am

for such a high current, I think you need a especial driver circuit or IC, not just use a GPIO.

innomkr
Posts: 7
Joined: Wed Sep 22, 2021 4:29 am

Re: Question regarding custom PCB design for power management.

Postby innomkr » Fri Jul 29, 2022 12:02 pm

What LED strip are you using? Addressable WS2812b?

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