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sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE) increases power consumption to 30mA instead of 6mA when used with E-Byte 52840 module (E73-2G4M08S1C)

Hello,

When I include in my code (Arduino IDE) sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE) on E-Byte 52840 module (E73-2G4M08S1C) power consumption increases to 30mA instead of 6mA when a client connects to nRF52840. After boot consumption is 50 uA with BLE enabled and after ~25sec it goes to 30-35mA without any connections from clients and stays at this level forever.

Without sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE) after boot consumption is 50 uA with BLE enabled and it stays the same for hours. When a client connects it goes to 6-6.5mA, after a client disconnects it goes back to ~50 uA.

Is it module related issue?

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  • Hi, there's nothing in the nRF52840 that consumes as much as 30mA. So it sounds to me like there are some hardware issues external to the chip, or the chip has been damaged. What happens when you see the 30mA consumption. Is the software still working as expected?

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  • Hi, there's nothing in the nRF52840 that consumes as much as 30mA. So it sounds to me like there are some hardware issues external to the chip, or the chip has been damaged. What happens when you see the 30mA consumption. Is the software still working as expected?

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