nRF52810: Switching the Converter mode for low current consumption

RE: nRF52810: Switching the Converter mode for low current consumption

OKA_T.T — Mon, 07 Mar 2022 05:34:59 GMT

Thank you for your response.

I will try to confirm from the information you provided.

RE: nRF52810: Switching the Converter mode for low current consumption

Simonr — Fri, 04 Mar 2022 08:14:41 GMT

Yes, you shouldn't see a constant 300uA current draw. If the device is in refresh mode, you will see some spikes (as explained in this case), but a constant draw is not normal. Can you explain what pin exactly you set to high? It should be sufficient to enable the DCDC converter with the enabling DCDCEN bit as explained in the product specification.

Best regards,

Simon

RE: nRF52810: Switching the Converter mode for low current consumption

OKA_T.T — Tue, 01 Mar 2022 08:54:51 GMT

Thank you very much for your answer.

Regarding your question, it is about DC/DC converters.
I have already designed it based on the reference circuit you mentioned.

Is it abnormal to have 300μA flowing at all times when driving the DC/DC converter as I asked earlier?

・Method under consideration

　(1) Turn off the power supply except when necessary, to avoid the constant 300μA consumption.
　(2) In order to reduce the current consumption at the time of transmission, I want to start the DC/DC converter after the power is turned on and then communicate.
　(3) For the purpose of 2) above, we would like to know how long it takes for the DC/DC converter to operate after setting its PIN to Hi.

RE: nRF52810: Switching the Converter mode for low current consumption

Simonr — Mon, 28 Feb 2022 14:24:25 GMT

By this, I assume you're referring to enabling the DCDC converter/regulator on the nRF52810, is that correct, or are you talking about the ADC (analog to digital converter)? Please note that two additional external components are required to use the DCDC regulator correctly. See the reference circuitry matching your package variant marked "DC/DC regulator setup" for more information.

Best regards,

Simon