Hey so I currently have a motor driver that is integrated with my water/meth controller. This controller can run 2 drivers at 15 ams each using PWM. It says the pwm signal runs at Low: 20-30 hz and High 10khz to 20khz all at 12volts DC. I am trying to run a brushed motor that is rated at 43amps continuous. This would run for maybe 10-20 seconds at the max at any given time, realististicly less then 10 seconds at less than 50% PWM the vase majority of the time. At first I ignorantly bought the motor thinking I could use a solid state relay to handle the extra power but I haven’t found any that come close to those hz especially at those amps. I have also considered running a motor driver but I am having trouble finding enough specs to make sure that PWM frequency will work especially at 12v logic. I know I can step down the volts but am unaware if that will work with 20khz pwm signal. Obviously the motor driver adds complexity to a system that needs to be reliable, but I need to find a way for this to work. If anyone has some direction or knows of a product that I could pull this off please let me know.
Hello wellman91 and welcome to the DigiKey TechForum,
If I understanding your question correctly, you are looking for a motor driver that could drive your 43A brushed motor and controlled by your controller that has a 15A PWM output?
If so, would you be looking for something like 2183-3586-ND.
You can review the User Manual and Datasheet to see if it will work for your application. If I am misunderstanding your request, can you please clarify.
This looks good except the data sheet says peak and continuous are both 60A and the 120A is discontinued. Am I misunderstanding this?
Is there something simpler that acts like a relay but is capable of 20khz and 60A? I feel like there must be as I imagine the motor driver uses something similar.