I am trying to make a 3phase mosfet driver for motor.But i only need the low input signals from mosfet driver as high input signals are provided by separate controller.
I am using
HCPL-250L Optocoupler : which will take Vcc of 5V and input signal of 12V which is connect in series with a resistor of 570Ohms.
Mosfet IRFP4468PbF (https://www.google.co.uk/url?sa=t&r...Bpje21K0wBXZpuEfzIfAoQ&bvm=bv.115277099,d.d2s) : which has a resistor connected of 0.18ohms and has input of 12V
Mosfet Driver HIP4086 (https://www.google.co.uk/url?sa=t&r...NFC3UZzyHGDOY1u96g80OA&bvm=bv.115277099,d.d2s) : Which has RDEL of 10Kohms. no bootstrap connect. Vdd of 12V.
The problem: While doing ym first test, I got output from driver of 12V which was perfect. But after a while, doing my second test the mosfet driver gave output of 2.5V and started to heat up. So now i am confuse what went wrong?
Thank you,
Kind Regards,
I am using
HCPL-250L Optocoupler : which will take Vcc of 5V and input signal of 12V which is connect in series with a resistor of 570Ohms.
Mosfet IRFP4468PbF (https://www.google.co.uk/url?sa=t&r...Bpje21K0wBXZpuEfzIfAoQ&bvm=bv.115277099,d.d2s) : which has a resistor connected of 0.18ohms and has input of 12V
Mosfet Driver HIP4086 (https://www.google.co.uk/url?sa=t&r...NFC3UZzyHGDOY1u96g80OA&bvm=bv.115277099,d.d2s) : Which has RDEL of 10Kohms. no bootstrap connect. Vdd of 12V.
The problem: While doing ym first test, I got output from driver of 12V which was perfect. But after a while, doing my second test the mosfet driver gave output of 2.5V and started to heat up. So now i am confuse what went wrong?
- Shoudl i include a bootstrap to have floating voltage?
- change the resistor value which is connected to mosfet?
- Change RDEL value?
Thank you,
Kind Regards,
