BoopathiS
Member level 2
Hi.. I'm facing one issue with IR2110S driver while driving 3 winding BLDC motor(24V,8A rating with Hall sensor feedback) using ifr3710 mosfet(Half bridge configuration).
Issue :
When varying duty cycle from 0 to 100 present with 5 percent interval, motor running fine. but when varying duty cycle(PWM) from 0 to 70 percent suddenly, IR2110S driver IC getting failed (with more than 60 percent duty cycle interval observing this effect). there is no IC heat. MOSFET not damaged.
Operating parameter :
Switching frequency is 50kHZ.
bootstrap capacitor is 47uF electrolytic with 0.1uF ceramic in parallel, Used 1K resistor between between gate and source. 47uF and 0.1uF capacitor connected to H bridge 24VDC input.
Is this due to transient voltage from G and S of MOSFET affecting driver ?
If yes, Can i use 15V TVS diode between Gate and source of each mosfet to suppress transient voltage from G and S of MOSFET to driver? Now only 1K resistor connected across G and S.
Please provide me suggestion to solve this issue...
Issue :
When varying duty cycle from 0 to 100 present with 5 percent interval, motor running fine. but when varying duty cycle(PWM) from 0 to 70 percent suddenly, IR2110S driver IC getting failed (with more than 60 percent duty cycle interval observing this effect). there is no IC heat. MOSFET not damaged.
Operating parameter :
Switching frequency is 50kHZ.
bootstrap capacitor is 47uF electrolytic with 0.1uF ceramic in parallel, Used 1K resistor between between gate and source. 47uF and 0.1uF capacitor connected to H bridge 24VDC input.
Is this due to transient voltage from G and S of MOSFET affecting driver ?
If yes, Can i use 15V TVS diode between Gate and source of each mosfet to suppress transient voltage from G and S of MOSFET to driver? Now only 1K resistor connected across G and S.
Please provide me suggestion to solve this issue...