I recently upgraded one of my 12v printers with TMC2100 drivers for the X and Y. These drivers like at least 36v in my combination and I may want to set them as high as 42v (driver max V = 45v). Currently I am powering just the drivers with a Drok 0-48v adjustable power supply set at 36v with a single 63v, 100uf capacitor.. Instead of the Drok I would like to add something like
this and power it from the onboard, 12v power supply. The bed for the printer is now 110v so there is plenty of reserve from this power source. My concern is the stability of the step up unit so it looks like a TVS diode would offer some insurance but I am lost when it comes to the ratings of these components, i.e. unidirectional / bidirectional, breakdown V, clamping V, etc.. What am I looking for, rating wise, and should I still run a capacitor with it?