Hi
I have an incoming 220V DC voltage and it must be converted to +5V/+/-15V DC (linear supply). One way is to invert the DC and through transformer provide isolation and step down through linear regulator. Is there any other way? Any off the shelf solutions to prevent redesign?
Hi
If I conveyed it rightly, my input voltage is DC220V and Not AC. Many of the converters indicated are AC/DC type. I am also looking for linear regulator instead of switching counterpart
Hi
If I conveyed it rightly, my input voltage is DC220V and Not AC. Many of the converters indicated are AC/DC type. I am also looking for linear regulator instead of switching counterpart
A linear regulator from 220V DC to 5V DC will waste 90% of the power being drawn. If you need the steady output of a linear regulator, use a switching regulator to a voltage 3V higher than you need, followed by a linear regulator.
Hi
If I conveyed it rightly, my input voltage is DC220V and Not AC. Many of the converters indicated are AC/DC type. I am also looking for linear regulator instead of switching counterpart
As I specifically mentioned, many converters in this voltage range will be marketed as AC to DC. However when you read the datasheet you'll see they're specified for DC input as well. Both the parts I linked are examples of that.
You can't have isolation without switching and realistically you can't do 220->5V without switching either.
The suggestions I gave were for the step down and isolation aspect. You'd follow them with linear if that's what you need.