ESP32 to control (on/off) USB power?

[zacsophonist]

I have an ESP32 that sends GPIO signals to trigger relays that turn on and off my connected 5V & 12V consumer devices (router, security cam, etc.).
Some devices are connected to clunky 12V to 5V buck converters.
I'm working on getting rid of the relays & bucks, with the goal of creating 1 PCB that solves my whole project.

Is there a current module on the market that would accept a GPIO signal to turn on/off power to a USB port 5V 3A?
The closest example of a USB module I can find (with schematic) is This Example, but I'm not sure if the IC would accept a GPIO trigger signal, this part is over my head.

 

[danadakk]

I do not see any enable pin on that part.

Possibly something over here :

USB power switches & charging port controllers product selection | TI.com

Select from TI's USB power switches & charging port controllers family of devices. USB power switches & charging port controllers parameters, data sheets, and design resources.

www.ti.com

Regards, Dana.

 

[zacsophonist]

Hi Dana, thank you for the lead. This one from that list would work, but it has a very complicated pinout:

https://www.ti.com/product/TPS25846-Q1

Since I'm only interested in powering via USB, not sending/receiving any data, would this Simple Switcher work just fine?: https://www.ti.com/product/LMR51430

 

[danadakk]

Seems to fit the bill. The only caveat is there seems to be no definitive statement
the PWM output drivers shut off, I may be blind as a bat could not find that.


Regards, Dana.

 

[zacsophonist]

It seems there are two versions of the component:
-This one is locked in PWM mode
-The other is a PFM version that allows for high efficiency at light loads.
If I'm understanding that correctly, since I'll be constantly drawing 3A from it, this FPWM version would be best for my application.

Thanks for your help with this!

 

[zacsophonist]

There is also this similar IC, TPS62933F, that uses FCCM instead of PWM

Better yet, this TPS82130 has a built-in inductor!

 

[zacsophonist]

I settled on the TPS621351RGXR.
It outputs up to 4A instead of 3A, and it's $0.40 cheaper.
Tiny footprint as well! (70mm2)