RaspberryPi 4B is not working with your USB-C charger?

RaspberryPi 4B is not working with your USB-C charger?

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Tyler Ward shared detailed article about not working USB-C chargers with Raspberry Pi 4B. via time4ee.com

The problem is in design of USB-C of Raspberry Pi. HW designers used only one pull-down resistor for both CCx pins.
This solution is not complain with USB-C standard and in case you are using e-marked cable (what is fully complained with USB-C standard), your USB-C charger sets your device, your Raspberry Pi, like “Audio Adaptor Accessory” based on setting of resistors.

Due to this wrong design, USB-C chargers (with e-marked label) doesn’t work with your Raspberry Pi. The power is refused. If you buy non e-marked label, there is possibility it will work without problem, because the low-cost cable contains only connection to one CC pin.

Of course, the USB-C power supply made by Raspberry Pi is fully working (and without e-marked label).

More info on https://www.scorpia.co.uk/2019/06/28/pi4-not-working-with-some-chargers-or-why-you-need-two-cc-resistors/

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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