Go Down

Topic: (Mosfet H-Bridge) P-Channel Mosfets are heating up (Read 638 times) previous topic - next topic

MarkT

one coil is 14.5 ohm.
Please remeasure this, it cannot possibly be true if its genuinely a 4A motor as stated.
I would expect 0.5 to 1.0 ohms or thereabouts.  Much more and the motor would overheat and catch fire at 4A.
The figures suggest its a 0.75 ohm motor.

To drive a 4A motor you need an industrial stepper driver, there is no single-chip solution to this current level.
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

MarkT

Stroomsterkte: 4.0
Voltagesterkte: 3.0V
Inductantie: 5.04 ohm

Seems that this datasheet has been written by the same noob.
The numbers don't make sense (to me).
3volt and 5.04ohm works out to 600mA, not 4Amp.
Wise to measure the resistance of the coils, and see if they are actually 5 ohms.
Leo..
The inductance is clearly nonsense as the units are wrong, best to ignore it, perhaps its meant to be mH.
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

Go Up