Recent content by ipadron

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    Low side MOSFET failling at low revs and high torque

    Thanks again for all the comments. It seems the problem I had with the failure of the low side MOSFET is solved. It looks like is related to what circuit and HighHopes had commented. Just had an IRFP4410 on each side and also due to the PWM control used the low side MOSFET get much hotter than...
  2. I

    Low side MOSFET failling at low revs and high torque

    Many thanks for the prompt replay. I have attached the layout of the main side of the PCB. There are two MOSFET in each high and low sides. I understand that the layout could be improved, especially in terms of the distance between the high and low side MOSFET and I'm actually working in that...
  3. I

    Low side MOSFET failling at low revs and high torque

    Hi everyone, I'm working on the design of a 3-phase controller but it fails at full power for a 3 kw motor and low speed (about 100 rpm). At about 60 V and 50 A the controller seems to work well in medium and high speed but at low revs and after a short time (less than 1 minute) any of the low...
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