nRF52832 DK sleep mode current consumption too high

[James168]

NCS v2.8.0

nRF52832 DK & nRF52840 DK

peripheral_uart unmodified example

nRF52832 DK with peripheral_uart example has about 1.3 mA current when LED off and sleep mode, but nRF52840 DK with peripheral_uart example just about 600 uA.

How to reduce the nRF52832 DK current consumption to approach the "Online Power Profiler for BLE" value on the web.

[Simonr]

Hi

Please share how you're doing current measurement. The device is advertising here, so some current consumption is expected. The nRF52840 DK has an nRF ONLY button that isolates the nRF52840 from the IMCU debugger, buttons and LEDs on the DK, while the nRF52832 DK does not have this. I assume the "LED off" you refer to here is referring to the nRF52840 DK and not the nRF52832. Please note that none of the DKs are in sleep mode here and the floor current on the nRF52832 DK is the current consumption for the DK with logging and debugging enabled.

Best regards,

Simon

[James168]

Hi,

1) To test with unmodified code, the LED toggle in 1000ms, so I measure the current when LED off to avoid LED current consumption.

To measure when LED off stage.

2) nRF52832 DK

between the advertising, the minimum and average current still has about 1.2mA

3) nRF52840 DK, SW6 on DEFAULT position

LED1 toggle

measure the current between advertising,

the average current is about 536uA