large current consumption in nrf52 in sleep mode

RE: large current consumption in nrf52 in sleep mode

gnrboy — Mon, 20 Jan 2020 14:44:34 GMT

Im using BMD300 module and using from nordic uart example ble_peripheral_uart (pca10040 nrf52832(bmd300)) in example after 3 minutes if any device doesnt connect to bmd300 it goes in sleep. In sdk_config are enabled external 32 kHz crystal. When device is in sleep average current which i mesure with otti is 11 mA

RE: large current consumption in nrf52 in sleep mode

Keton — Sun, 03 Jul 2016 18:44:01 GMT

Ankush according to this: devzone.nordicsemi.com/.../ 19uA is a very good result.

RE: large current consumption in nrf52 in sleep mode

Ankush — Sun, 03 Jul 2016 16:44:41 GMT

Hi Keton,

Thanks for your reply. It works for me.Now i am trying by disabling the UART and current consumption is approximately 19 uA(which I needed). But if we consider the datasheet values of nrf52, its still very high. In datasheet is given as nearly 2 uA. Why there is so difference? Is it because of the BMD300 RIGADO board?

RE: large current consumption in nrf52 in sleep mode

Keton — Sat, 02 Jul 2016 23:57:45 GMT

UART is high power consumption peripheral as it keeps HFCLK running. Disable it before entering sleep cycle. Same most likely is true for SPI.