Draw 15V From USB C PD capable devices

Thread Starter

Itami

Joined Jul 11, 2019
1
Hello,

I need to draw 15V from USB C Power Delivery capable devices such as power banks or chargers.

So I need a rather small tool or build which will send the request for 15V to the power supplying device.

This tool or build should be built to last and work with around 40W during long periods of time as I'm building a portable special lamp.

Thank you so much for your help!
 

RPLaJeunesse

Joined Jul 29, 2018
77
Most of your answers are found here:
https://www.embedded.com/design/power-optimization/4458380/USB-Type-C-and-power-delivery-101-----Ports-and-connections

and here:
https://www.embedded.com/design/power-optimization/4458400/USB-Type-C-and-power-delivery-101-----Power-delivery-protocol

Note that it requires complex checksummed serial strings being sent back and forth on the CC pin(s), and validated upon receipt before acceptance of the data. Not for the faint of heart to implement. I'd look at Cypress to see if they have something off the shelf.
 
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