danijel.gorupec
Newbie level 4
I use L298 dual H-bridge to drive a stepper motor. The L298 fails eventually (after few hours).
I see current spikes that happen at switching moments - up to 6A, 100ns (the datasheet for L298 says that maximum allowed spike is 3A, 100ns). The spike is, I suppose, product of parasitic capacity of stepper motor windings.
Can such spikes be responsable for L298 fail? If yes, what to do? (power supply is 30V, but inserting a 10ohm,10W resistor doesn't seem as a solution to me as it would decrease speed/acceleration of the stepper motor).
I see current spikes that happen at switching moments - up to 6A, 100ns (the datasheet for L298 says that maximum allowed spike is 3A, 100ns). The spike is, I suppose, product of parasitic capacity of stepper motor windings.
Can such spikes be responsable for L298 fail? If yes, what to do? (power supply is 30V, but inserting a 10ohm,10W resistor doesn't seem as a solution to me as it would decrease speed/acceleration of the stepper motor).