PCA10059 sleep current

[eleven-x_devteam]

Hi, 

 I am developiing a project for BLE scanner with PCA10059 based on "nRF5_SDK_16.0.0_98a08e2\examples\ble_peripheral\ble_app_hrs".

 Even after enabling DCDC and adding optimizing gpio pin code, when it goes to sleep, the current is around 15 uA.

 My other project nrf52840 customized device sleep current is around 7uA so I wonder if PCA10059 sleep current can go down to 7uA level.

If so, what can I try more to reduce the sleep current?

Thanks.

[Hung Bui]

Hi Eleven-x, 

Could you let me know how you measure the current consumption on the dongle ? With which measurement tool ? 
When you mentioned "sleep current" it's the current when the device enter which sleep mode  ? Does it also do advertising ? 

Please be aware that the dongle is not made to optimize power consumption because it's expected to connect to a PC anyway. 

If you are planning to make a scanner running on PCA10059, I would suggest to have a look at the ble_central examples instead of ble_peripheral.

[eleven-x_devteam]

Hi Hung,

Thanks for the answer.

Hung Bui said:

Could you let me know how you measure the current consumption on the dongle ? With which measurement tool ? 

>> I am using ppk2 with connecting to J2 (TC2050-IDC) and the ppk2 gives power and not connected via USB port.

Hung Bui said:

When you mentioned "sleep current" it's the current when the device enter which sleep mode  ? Does it also do advertising ? 

>>  There is no advertising. Even if I run the code like below, it keeps 15 uA without code related to BLE. 

int main(void)

{

    for(;;)

        __WFE();

Hung Bui said:

Please be aware that the dongle is not made to optimize power consumption because it's expected to connect to a PC anyway. 

>> Yeah, that's what I want to make sure. I was expecting the lowest current should be around 3~4uA but do you mean it could be higher for the dongle?

Thanks!

[eleven-x_devteam]

The issue was fixed with HW rework.