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Do I need a DC-DC converter for a wireless keyboard using nRF52832?

leon_q

I am planning on creating a wireless keyboard with the nRF52832, and I intend to supply it with power from a ML2032 (3-volt) rechargeable button cell battery. Is it feasible to use this battery directly without additional power conditioning, or should a DC-DC converter be incorporated to ensure stable voltage supply?

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    HI Leon,

    I agree with Hugh. An external DC-DC comparator is not required.. You will likely need something to handle the rechargeable battery (in case the voltage supply is not stable), so some external circuitry might be needed. You can maybe use the nPM series products for that, say the nPM1300.. See here: https://docs.nordicsemi.com/category/npm-family. 

    But it is not be a requirement to have anything extra as long as you are able to provide stable voltage from the battery.

    Here is a ticket where a coin cell battery is connected to the nRF52810. Same can be done with nrf52832.

    Regards,

    Swathy

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    HI Leon,

    I agree with Hugh. An external DC-DC comparator is not required.. You will likely need something to handle the rechargeable battery (in case the voltage supply is not stable), so some external circuitry might be needed. You can maybe use the nPM series products for that, say the nPM1300.. See here: https://docs.nordicsemi.com/category/npm-family. 

    But it is not be a requirement to have anything extra as long as you are able to provide stable voltage from the battery.

    Here is a ticket where a coin cell battery is connected to the nRF52810. Same can be done with nrf52832.

    Regards,

    Swathy

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