Hey Everybody,
I have designed a circuit that will turn on LEDs using a CapSense sensor. When I use my power supply with the LM2665 in the circuit everything works fine. When I use batteries and the LM2665 in the circuit the LEDs will lock on or constantly reset after my fade_on I have set in my firmware. I have checked with the scope and there is a noticeable difference in the signals between batteries and power supply. The power supply has more noise (probably because of the inductor??) and the batteries are smooth but there is a sag on the rising edge. Im using 2 CR2430 batteries in parallel and using the doubler for some over head voltage for my LEDs. Is there a better voltage converter out there that wont have this effect when used with batteries? OR maybe I have made a mistake in my design. I have attached a schematic any help is greatly appreciated.
I have designed a circuit that will turn on LEDs using a CapSense sensor. When I use my power supply with the LM2665 in the circuit everything works fine. When I use batteries and the LM2665 in the circuit the LEDs will lock on or constantly reset after my fade_on I have set in my firmware. I have checked with the scope and there is a noticeable difference in the signals between batteries and power supply. The power supply has more noise (probably because of the inductor??) and the batteries are smooth but there is a sag on the rising edge. Im using 2 CR2430 batteries in parallel and using the doubler for some over head voltage for my LEDs. Is there a better voltage converter out there that wont have this effect when used with batteries? OR maybe I have made a mistake in my design. I have attached a schematic any help is greatly appreciated.
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