Hi,
I have a power requirement for +5V, +3.3V and +1.8V.
Studying available designs, I have seen both parallel and serie configuration.
- Series
+5V DC input with voltage regulators connected in series to convert +5V t
+3.3V, and +3.3V to +1.8V
- Parallel
In both cases, all three voltages are available.
What are the pros and cons?
Also, in the Olimex schematic (top right corner), I see a Schottky Barrie being used (BAT54C),
I believe the main purpose was to isolate the +5V, +3.3V and +1.8V powe rails. Is this really required?
Thanks, Saritha.