DC-DC conversion Product or circuit

[paul.smithzenburg]

Hi guys. I have to Use a micro processor at a location where I will only have access to 220V dc.

I need a circuit that can convert the 220V dc to the range of 12V or 5V. Or a product in the market that can do this. I don't want to use voltage dividers as this is inefficient.


Thanks

 

[barry]

220 DC, not AC? Well, then what you need is buck converter. You don't tell us how much current you need, which is kind of an important bit of information...

 

[paul.smithzenburg]

Thanks. I need 2 A maximum. And its 220 DC, its from a battery bank. Can I buy readily available buck converters?

 

[barry]

You can buy a DC-DC converter, but it's going to be pretty expensive. That 220VDC input is pretty high. Here's one solution, although it might be overkill for your application
https://www.acopian.com/store/8y-(1).aspx

 

[Rajnaveen]

design a flyback converter with pwm controller ic

 

[Orson Cart]

www.powerint.com has plenty of solutions for this...

 

[FvM]

Standard (non-PFC) switch mode power supplies have bridge rectifier input and work well with 220V DC, E.g. Meanwell PM-05 module. Small modules down to 1 or 2 W or available as well. Unless you are designing for high quantity it won't pay to make your own.

 

[paul.smithzenburg]

But I will still need to power the PWM ic with much less than 220V