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L298 Getting extremely hot

 
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vsmGuy



Joined: 26 Jun 2006
Posts: 445
Helped: 23
Post19 Feb 2007 18:09   L298 Getting extremely hot
Problem solved. Two tracks hade been swapped.

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Last edited by vsmGuy on 21 Feb 2007 19:11; edited 1 time in total
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vsmGuy



Joined: 26 Jun 2006
Posts: 445
Helped: 23
Post20 Feb 2007 4:07   Re: L298 Getting extremely hot
what do I do with the current sense pins if I don't want to use current sensing ?

Do I leave them floating/N.C (Not connected) or do I ground them ?

Note that I have currently grounded these pins.
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Pld4me



Joined: 11 Dec 2006
Posts: 17
Helped: 1
Post20 Feb 2007 19:01   Re: L298 Getting extremely hot
vsmGuy,

After looking over the datasheet, I can't see any reason why the circuit would overheat with the connections you said you have.

Are you sure you don't have a diode in backwards?

Regards,

Pld4me
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fireball003



Joined: 28 Oct 2005
Posts: 181
Helped: 4
Post21 Feb 2007 17:44   L298 Getting extremely hot
As for my other ST chip L6206, the chip was burnt inside and it was also becoming very hot right after power on.

Never float the current sense pins, rather connect those in power ground directly.
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vsmGuy



Joined: 26 Jun 2006
Posts: 445
Helped: 23
Post04 Mar 2007 2:28   L298 Getting extremely hot
Oh.. what wattage the current sense pins can we use ? For small 12v motors @ 500ma
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