I'm new to this group, so firstly, a big hello and thank you for allowing me to join this cool community!
I am a new product designer and have a MOSFET issue I would love some help with if possible. We had a small automotive product that uses an IPD90P03P4L to turn on a 12 VDC compressor that draws about 25 amps. So far, so good and there are about 3000 of these units working happily all around the country.
But, now we want to run the Compressor at 80% PWM for 0.15 seconds before it goes to 100% PWM. It works fine, but if I run it at 80% PWM for more than a few seconds the MOSFET gets quite warm. The PWM is at 1000 hertz by the way.
I would love to get some advice on how to better protect the MOSFET from whatever spikes seem to be occurring.
We do have a TVS across the Compressor (SA36A TVS DIODE 36VWM 58.1VC DO204AC) that we have found to be vital, without this the MOSFET will fail in few dozen operations.
We have to resolve this over the next few days and would be happy to pay for some expert help with this.
Please let me know if anyone is interested / available.
Best Regards,
Peter
I am a new product designer and have a MOSFET issue I would love some help with if possible. We had a small automotive product that uses an IPD90P03P4L to turn on a 12 VDC compressor that draws about 25 amps. So far, so good and there are about 3000 of these units working happily all around the country.
But, now we want to run the Compressor at 80% PWM for 0.15 seconds before it goes to 100% PWM. It works fine, but if I run it at 80% PWM for more than a few seconds the MOSFET gets quite warm. The PWM is at 1000 hertz by the way.
I would love to get some advice on how to better protect the MOSFET from whatever spikes seem to be occurring.
We do have a TVS across the Compressor (SA36A TVS DIODE 36VWM 58.1VC DO204AC) that we have found to be vital, without this the MOSFET will fail in few dozen operations.
We have to resolve this over the next few days and would be happy to pay for some expert help with this.
Please let me know if anyone is interested / available.
Best Regards,
Peter