A lot of questions:I need a DC-DC converter (buck or boost) that will ramp up and down with the power switch. Continuously or step variable. Output power up to about 10A. If you can give me a recommendation, please help.
What voltage are the lamps designed to run on?A lot of answers.
Ramp time--don't care
Buck, boost, or buck/boost--don't care
Adding a module would be fine, but I don't know what I need.
Just show me some options, then I can decide what I want.
OK, understanding better what you are trying to do. What voltage(s) are feeding your convertors, or is that decided?Lamps I am considering are 12v 100W, 24v 250W, 28v 600W and 36v 400W. Say a buck for 12v and 24v, and a boost for 28v and 36v. I will not be changing lamps. I will have one converter/system and lamp for one light. If I want to use a different lamp, it would be in a different light and another converter.
I'm not asking for a one size fits all, just something that will work for one setup.
My thought also, two convertors in series, "compound" inefficiency.Are you really using Low-voltage halogen lamps?
Also, are you planning to use a power supply to drop the mains voltage to some voltage the converters can use, which brings up the question, Why?
Or are you using something like an couple of automobile batteries wired in series to come up with ~24VDC, thereby you stating the use of buck converter for the 12v and 24v lamps and boost converter for the 28v and 36v lamps. Running a buck converter and trying to maintain 24 volts to the lamp(s) will be difficult on 2 series auto batteries.