nRF52840 USB supply is given while VDD and VDDH is off

[Vikas Bhatt]

What happens if we power up VBUS but do not power up VDD and VDDH in nRF52840?

Please refer to the image of our schematic below, which illustrates how we have utilized the MDBT50Q-1MV2 module.

[Priyanka]

Hi Vikas,

You need the VBUS and VDDH or VDD supply for the proper USB peripheral operation:

Best Regards,

Priyanka

[Vikas Bhatt]

Will connecting it as shown in the previously shared image damage the nRF52840?

[Vikas Bhatt]

Will connecting it as shown in the previously shared image damage the nRF52840 if we power up VBUS but do not power up VDD and VDDH in nRF52840?

[Priyanka]

It should work fine with just VBUS powered, but we cannot guarantee it completely.

-Priyanka