High sleep current on nrf52840

[jonram]

On nrf52840 I get a current of ~10 uA while sleeping. At the moment I don't run any code and don't start up the softdevice. I go directly to sleep with __WFE(). The result with the same code on nrf52832 is ~1 uA. Any suggestion on what the reason is and how it can be resolved? 

[jonram]

We found the problem.

We supplied voltage on VDD.

VDDH pin was connected to VBUS, but not to supply voltage.

Supplying VDD and VDDH and let VBUS float gave us the correct current.