-Most of CCPWMs need cooling fans. Why does your CCPWM not have a cooling fan? Is the CCPWM hot when working?
-Most PWM use a low quality FET to control the current, and it gets hot. So you get a poor design, added cost from all the heat sink, assembly cost, $0.49 very low quality computer fan, not intended for vibration and automotive use etc.
We use a proper, efficient FET that runs 5C above ambient temp. No moving parts, better performance, lower cost, higher reliability