There is a big battery that I have which has 64-67 volts, and I need constant 12 DC volts from it.
I tried ebay, but the best buck converter that I found had limit of 55 volts. My local electronic parts store doesn't offer what I want either.
I have some basic skills in soldering, I have some resistors, diodes and MOSFETS, I know how this all work separately, buy is there a way for me to make a converter that I need? Or where to get one?
For instance, can I use transformer-type of this-other-pulsing-type 220 AC - DC 12 converter, but with 66V DC input?
Can TPS2490DGS help me with it? I don't understand english well, but from what I can tell from the datasheet, this thing can control two external MOSFETs providing nice custom current and voltage outputs. But how to use it? It has 10 pins...
Update: The max current on the output I need is 4A.