Hi guys, ive been hunting around and have found an off the shelf PCB item that does this however when loaded up to 1.5amps it seems to sag to 6v instead of 12, and the whole design using 3 different boards is ugly and i want to move away from this. I am using this to supply a flashing cree led light from a 32volt headlight supply. Cree leds take 12volts.
What i was looking to do instead is design my own switching DC to DC converter to drop the nominal 32 volt input (generally runs at 32v but needs to be able to handle a transient peak up to 50v max, source power supply is a steam turbine that has a slowish acting mechanical governor, this cant be changed). The maximum supply current needs to be minimum 1.5 amps, 2 amps is more ideal if possible and output voltage nominally 12v (a tiny little bit over or under wont affect things too much), however when the flasher isnt operating the current draw will drop to 20 to 30mA but the output still needs to remain at 12v.
I just cant get my head around the design for a switching DC to DC converter.
and a Linear voltage regulator will get too hot dropping that power.
can anybody help me please.
What i was looking to do instead is design my own switching DC to DC converter to drop the nominal 32 volt input (generally runs at 32v but needs to be able to handle a transient peak up to 50v max, source power supply is a steam turbine that has a slowish acting mechanical governor, this cant be changed). The maximum supply current needs to be minimum 1.5 amps, 2 amps is more ideal if possible and output voltage nominally 12v (a tiny little bit over or under wont affect things too much), however when the flasher isnt operating the current draw will drop to 20 to 30mA but the output still needs to remain at 12v.
I just cant get my head around the design for a switching DC to DC converter.
and a Linear voltage regulator will get too hot dropping that power.
can anybody help me please.