Laser Cutter Power Supply Proposal:

• Often diode supplys are constant current, so a constant voltage supply may not be optimal.
• Large conductors are required for the currents involved.
• Most off  the shelf power supplies don't go this low and are expensive.
• Straight component level approach may take some time to debug.   (High currents power supply design can be challenging.)
  

    I propose initially using 2 point of load modules in parallel, and if the supply needs to be constant current, then adding a current detector and error amplifier to the supply's feedback loops.    Point of load supplies are used to generate high currents for CPU's and in dense (telecom) PCB's.

    The circuit can probably be mounted next to the laser module, limiting the length of the high current conductors.



   The current sensor was selected because it looks cool.    It is also a one piece unit that provides a voltage output proportional to current.   Isolation, insertion and signal conditioning are handled by the module.   It is hall-effect based.

   Both of the above can be replaced with a component level solution (to reduce cost) once the initial prototypes are made.

The following are possible key components:

Component Level Notes:

   A component level solution could be based around something like a: