About L298n drive board

Projects General Guidance
1

Hi everyone ,

I use L298N to drive my small device(not motor) and input signal to switch
on/off . The frequency is about 1~100Hz. the usage about L298N is below :

external power supply : 12V Battery , max current is up to 7.2A.
IN1 , IN2 : Using Arduino to switch on/off and Arduino is drived by 6V battery
Load circuit : my small device ( about 1 Ohm) and Resistance 23 Ohm

Under this usage , my L298N board is burned and doesn't work.The attachment is
circuit graph .

How to solve this problem?

Thanks,
Vicder

Zhsm.jpg
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2

I'm surprised you get an overheat since the chip is capable of 4A total and 12V through 24 Ohms should give you no more than 1/2A.

You can add a heat sink to dissipate more power.

You can parallel Channel 1 with Channel 4 and Channel 2 with Channel 3 to get all 4 Amps through one output.

3

I parallel 3 L298 boards, pin by pin and they worked like one, but they drive more amps. I saw in a printing machinery an aplication where they used 4 parallel L298.