Hi!
Am looking to upgrade an existing project which uses a combination of switching and LDOs to cater for three different voltage level supplies
Input 24-30V DC
Outputs:
12V at 200mA max
5V at 200 mA Max
3V3 at 100 mA Max
My current design uses two stages of MC34063 to lower the voltage to 12V and then 5V and finally an AMS1117-3.3 to get the 3V3.
Since the 34063 is somewhat dated could anyone advice a replacement approach to the the same above voltage supplies? I was thinking of LM2596 but then I would also need two of them...
Yes it would, but with a voltage drop at 7V across it , it will waste 1.4W more when the useful is just 1W. Not very efficient.
Yes I am familiar with those modules and I use them for quick fix projects.
But this is a "proper" design with a dual layer PCB , SMD parts and MCU etc. I wouldnt like to solder an external ebay module on top of it...
If you use the 2nd board above, it’s easier and cheaper to buy ready made boards and take the components off. Suggest you replace the potentiometer with fixed resistance.
Follow the same foil pattern.
