Hi,
I have build a PWM to control a 3HP DC motor. The problem is that the MOSFET is getting damaged because of high return current/voltage. I used a Diode at the motor end but that diode is also getting burnt.
Main DC 380 Volt
PWM used to control a 220 DC 3HP motor
I found out that a snubber circuit is need to take up the spike generated by the motor when the MOSFET is switched off. Can anyone help me with the exact calculation of Capacitor and Resistance needed for Snubber?
Regards,
Bency
I have build a PWM to control a 3HP DC motor. The problem is that the MOSFET is getting damaged because of high return current/voltage. I used a Diode at the motor end but that diode is also getting burnt.
Main DC 380 Volt
PWM used to control a 220 DC 3HP motor
I found out that a snubber circuit is need to take up the spike generated by the motor when the MOSFET is switched off. Can anyone help me with the exact calculation of Capacitor and Resistance needed for Snubber?
Regards,
Bency