Building a PSU for board and servos

Hi,

In my project, I have an ESP32 board which control up to five servos, and some sensors/led connected thru an I2C chip.

I'm looking for the right way to supply power to my circuit, with the following features :

  • Input 1 : 5V 6A (taken from a PSU adapter)
  • Output 1 : 5V 500mA (permanent)
  • Output 2 : 5V 500mA (switchable using a signal from ESP32)
  • Output 3 : 5V 5A (switchable using a signal from ESP32)

The output 1 will be used to power the ESP32 board permanently. The ESP32 will go to deep sleep frequently for hours.

The output 2 will be used to power some low current devices (I2C, LEDs, sensors). It will be turned on/off by ESP32 when needed

The output 3 will be used to power high current to 5 servos. It will be turned on/off by ESP32 when needed

I don't really know where to start for building this : I'm familliar with software and "logic" hardware but not with high current things...

What's the name of this kind of circuit ? A "DC current spliter" ? Knowing how to name it will help me to look for informations :slight_smile:

I think I need these 3 components :

  • 5V 1A decoupling
  • 5V 500mA controlable switch
  • 5V 5A controlable switch

And then create a circuit like this :

Is that right ?

Which kind of decoupling circuit should I use ?
Which kind of controlabel switch ? transistor for low current, mosfet for high current ? top-side ? low-side ?

Could you give me some websites/tutorials or any documentation to learn how to build this properly ?

Thanks