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Is it ok doubler circuit for powering nRF52832 custom board

vishal

Hello Everyone,

I have developed my application using BLE for connect android mobile. I have design complete PCB using your reference design. But i have littele confused in power supply schematic because i have use MCP1640 doubler IC, and use only one AA 1.5V battery and converted to 3.3V. my question is i have this attached schematic to powering Nordic chip. Is it sufficient for continuously power to nRF52832 or i need to add any other components with this circuit. I just verify this circuit and hope it will not cause problem in future. I have tested this circuit in general purpose PCB its working fine and that's why i am using in my final design. Any extra energy consumption due this doubler circuit my device current consumption is 4mA-6mA. Please give your valuable suggestion for should i use thisimage description.

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    1. What is your advertising interval? If you are advertising with very short intervals I suppose you can end up drawing that much current.
    2. Have you tested your code on a development kit? Does it draw the same amount of current?
    3. It could also be a peripheral that is still enabled, or the CPU that of some reason turns on and off from time to time. With a multimeter you won't know whether it is a peripheral that continuously draws 0.3-0.4mA or if it is the CPU that rapidly turns on and off because the multimeter shows you an average current consumption value. This is why an oscilloscope showing the current measured over time would be very useful.
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  • 0
    1. What is your advertising interval? If you are advertising with very short intervals I suppose you can end up drawing that much current.
    2. Have you tested your code on a development kit? Does it draw the same amount of current?
    3. It could also be a peripheral that is still enabled, or the CPU that of some reason turns on and off from time to time. With a multimeter you won't know whether it is a peripheral that continuously draws 0.3-0.4mA or if it is the CPU that rapidly turns on and off because the multimeter shows you an average current consumption value. This is why an oscilloscope showing the current measured over time would be very useful.
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