I have a TB6612FNG <http://www.kynix.com/Parts/81922/TB6612FNG%2cC%2c8%2cEL.html> motor driver module.
I am trying to control one DC motor (toy DC motor) via Arduino. When I try to run this setup using a 9V battery the motor runs as expected (albeit really slow). But when I change the power supply to a 9V DC 1A AC-DC adapter the motor controller IC gets super hot. When I check the current from the adapter to the circuit, it shows 1.5A, and the voltage across the supply is 4.5 V. The motor runs for a second or two, then it stops. I guess it is because the supplied voltage dropped below the Arduinos operating voltage. So, my questions are: Why does the IC become hot when powered by the adapter? (I guess I burnt one chip already. Shouldn't there be a thermal shutdown?) Why does the voltage drop? I guess probably because the adapter is unregulated, but I am not sure. Do I need to get a different adapter? If yes, what should be the specs? (When I bought this adapter, I did not know about regulated vs. unregulated. The Arduino website suggested 9V 1A, so I got that.) How can I avoid overheating of the IC when running with an adapter? FYI: I am a hobbyist and a newbie in electronics. Please feel free to suggest alternatives and point out the mistakes. I need to control 4 DC motors. Thanks -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/b90f96bb-ccb9-4ffe-b247-02c4bbb0da3a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
