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'[pic]: Driving DC Motor'
2007\01\11@060628 by antoniasse

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Hello,  
 
I have been using CI SG3524 Texas to control a DC motor 1/8HP and 24VCC.  
 
I am looking for new alternatives of circuits integrated to drive  
this motor.  
 
 
Any suggestion?

Luis F.

2007\01\11@063216 by Alan B. Pearce

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>I have been using CI SG3524 Texas to control a DC motor 1/8HP and 24VCC.
>
>I am looking for new alternatives of circuits integrated to drive
>this motor.

Something like an LM18200 from National Semiconductor? They also have other
nice half bridge driver chips if you need beefy external FETS.

Also Intersil have some nice chips. Look at the HIP408x family. Again these
will need external FETS, where the LM18200 will drive 3 amps.

All these solutions will produce PWM which will need to be at a suitable
frequency for the motor, and may require some LC filtering, depending on
your end use.

2007\01\11@071143 by Jinx

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> I have been using CI SG3524 Texas to control a DC motor 1/8HP
> and 24VCC.  
>  
> I am looking for new alternatives of circuits integrated to drive  
> this motor.  

What are you using now ? Do you want bi-directional drive ? It
looks like the SG3524 has linked alternating outputs so I presume
it doesn't do bi-directional drive. As you've posted this under the
[PIC] tag, why not a PIC and an external bipolar/FET or H-bridge

eg add PWM to this

http://www.bobblick.com/techref/projects/hbridge/hbridge.html

2007\01\11@075041 by antoniasse

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Thanks Jinx to replay,

I have been using 1 to 200RPM.
I got this using a converter freq/Vcc (LM2917) linked with the
SG3524 plus a FET to driving the motor.
I would like a new idea get the same.
I tried do this using PIC with PWM and a FET, but the result was not good.
I tried several ways, but I didn't get a 1 RPM yet.

Any idea?

Luis F




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> --

2007\01\11@085200 by Tamas Rudnai

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1 RPM?? You mean with a gear or the shaft itself of the motor has to be
rotated at 1rpm? Is that possible at all?

Tamas


On 1/11/07, antoniasse <spam_OUTantoniasseTakeThisOuTspambraile.com.br> wrote:
{Quote hidden}

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