I'm using some buck converters and an Arduino. The buck converter (Vout = 5.25v) is for a USB charger (up to 2 Amps). Well, I think the circuit itself has no problem, but in fact there is a problem due to electrostatic charges.
Let's suppose that I touch the open-state USB cable with some electrostatic charge (caused by friction of my clothes). Then the Arduino's voltage is influenced in this situation. I coded the Arduino to respond to the voltage fluctuation of the circuit and the Arduino tells me the fluctuation has occurred. If the electrostatic charge is big enough, Arduino reboots!
I know the electrostatic charge causes the problem, but how can I cease the problem? Some intuitions for the solution will be appreciated. This just occurs very few times but I don't like this. If I can do, I want to solve this problem.
- USB is used with Dedicated Charger Port (DCP) mode.