My TB6612FNG just burnt after code changes

Robotics
1

I want to know the cause of the error that led to my TB6612FNG burning out suddenly after I changed the code. Attached underneath is the schematic of my connection. So basically what happened was I was testing if all functionality of TB6612FNG works as i was checking if it responded on time and properly to my Time of Flight as the project is a sumobot then when I went ahead and change everything regarding the sensors and went and put only Backward(motor1,motor2,180) within the loop with no delay. My TB6612FNG goes into smoke suddenly, and after that, I can’t use it anymore, and the LM module is making a noise when I turn everything on.

Schematic_page-0001
Schematic_page-00011755×1241 190 KB

Specs of the Motor (I am using 4 motors and 2 each for Aout and Bout)

DC Gear Motor 12V 915RPM - SGM25-370

Specifications:

  • Operating voltage: between 6 V and 18 V

  • Nominal voltage: 12 V

  • Free-run speed at 12 V: 915 RPM

  • Free-run current at 12 V: 50 mA

  • Stall current at 12 V: 1200 mA

  • Stall torque at 12 V: 1 kg.cm

  • Gear ratio: 1:9.6

  • Reductor size: 17.5 mm

  • Weight: 82 g

  • Product dimension: 48.3mm x 25mmØ

  • Shaft diameter: 4mm

  • Shaft length: 8mm

2

Hi Hitmna,

We are going to need a little more information about your code to help figure out what’s going on. Can you post all of the motor drive related sections?

Cheers!

-Bill

1 Like
3

So you’re using 2 motors on each output?

Each output is rated for 1.2 amp, your motors each draw 1.2 amps at stall. I think you’re pulling too much current for the driver.

You could use two drivers and put one motor per channel. The inputs to the driver can be paralled so the motors work in pairs.

1 Like