Hi,
How do you go about choosing a suitable flyback diode for a 1.8kW 36V motor? Does it have to be able to handle above the motor's stall current of 50A?
Cheers,
Michael
- posted
17 years ago
Flyback Diode
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- posted
17 years ago
You might get by with a smaller diode, but you would have to heat sink it very well to cover the worst case situation. At stall, something approaching 90% of motor current will pass through the diode. You could parallel the two halves of this one for less than $6 from Digikey:
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This one costs twice as much but has more margin (both voltage and current):
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