View Full Version : l298 l297 driver 2A with stepper 3A help

05-31-2009, 10:46 AM
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


stepper =

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

05-31-2009, 10:50 AM
The L298 is rated a maximum of 4A ehn both channels are paralleled. Typical stepper configuration is 2A max.

05-31-2009, 11:04 AM
What's your main

did this work ?

06-05-2009, 09:58 AM
yes, u can use 2A driver with 3A motor, but it is lower torque

06-05-2009, 10:09 AM
Yes you can run a motor at less than it's rated current. The result is lower torque.