I have a basic circuit that uses 555 timer to generate PWM signal and the PWM signal turns the high side switch, SI1865DDL, on and off at certain frequency and duty cycle. The output from the high side switch goes to a camera which then takes photo. Both the high side switch and the 555 timer, are powered by a single power supply that outputs 5V, 1Amp max.
Power Supply:
Here is a block diagram
I will use a IN4148 diode for reverse protection. I would also like to mention that I have turned the system on for an hours, and it worked fine. What sort of protection can I use on the output of the power supply to maintain at 5V 1Amp?
So, I was able to find a tvs diode that I believe fits my need: uClamp0871P. Can anyone please verify if this is a good tvs diode for a 5V power supply? I understand that it clamps at 15V which I am fine with it as it has low steady state power rating under 8V.