l298 l297 driver 2A with stepper 3A help

[chawkiz]

i have done my pcb l298 l297 2A

its work perfect with stepper 1A

but when i change with 3A stepper i uses 0.666 vref at paralell 2.1

with pc power supply 12v

but l298 heat abnormal more then 120 degre c

i put aluminuim and 3 fan cooler but chip very heat


did some 1 have solution haw i do

thanks


stepper =


Typ : bipolar / (unipolar)
Strom : 2,2 A (3,0 A) / Phase
Haltemoment : 1,65 Nm (1,3 Nm)
Widerstand : 0,9 Ohm / Phase
Induktivität : 2,2 mH / Phase

[pminmo]

The L298 is rated a maximum of 4A ehn both channels are paralleled. Typical stepper configuration is 2A max.

[chawkiz]

What's your main

did this work ?

[tivoidethuong]

yes, u can use 2A driver with 3A motor, but it is lower torque

[pminmo]

Yes you can run a motor at less than it's rated current. The result is lower torque.