I need a driver for a 500w motor (14A max, 24vDC). I have used the L298N driver for smaller motors and I was hoping to find something like that for the higher current, but have been unable to find any. (Does anyone know of any?)
I have found a lot of articles about building drivers for higher currents. Of course these all use mosfet h-bridges. The only times I've ever used mosfets in the past is when I was following a parts list. Now that I have to actually figure out which mosfet(s) to use, I am getting blown away by the shear number of them on the market.
Without prior knowledge of a bunch of different mosfets, how do you go about picking one for the job? Is there a resource on the internet that compares the specs of different mosfets that are on the market? Does anyone have any recommendations for a book on mosfets that would make this task easier? Even a list of commonly used mosfets for different current and output voltage ranges would be helpful.
I am aware that, since these are driving motors, the source-drain resistance needs to be as low as possible. I will also be using PWM, so the switching speed is important. Anything else specific to h-bridges that I should be looking for in a good mosfet?
As for shoot-through: I am thinking that I should find the correct mosfets for the circuit, and then design around them for shoot-through protection. Or should that figure into the mosfet selection process?
Also, what advice do you have for using a mosfet controller chip. As far as I can tell, these are used primarily to boost voltages from logic chips to levels that are suitable for a mosfet gate. I would probably use optoisolators unless there is some great benefit to using a controller chip.
Thanks in advance for any tips.