Tireless search for a small 5A H-Bridge

I need a small H-bridge option, similar to this Maxim 1A H-Bridge IC, but could handle at least 4A, ideally 5A. It doesn't have to be in a 8-SOIC package, but I do not want a 2"x2" PCB version either. A single chip would be best.

Thoughts?

This will be for a stepper/servo motor driver, ultimately.

Cabe

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0 ratsept over 15 years ago

If this is for a stepper motor I imagine you would need a dual bridge. For a dual bridge I would recommend L6205 by ST. I have not used this chip but parameters seem nice and most importantly (for me) it is one of the smallest dual bridges in this category. For single bridge I have used mc33887 and that is a really good chip. It has varios protection and feedback mechanisms and comes in a reasonable package (can be prototyped by hand).

Tiit
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0 Catwell over 15 years ago in reply to ratsept

L6025 runs 2.8A, full bridge. Amp output too low.
mc33887 runs 5A, half bridge. Output is right, could use two in concert.

Thanks, the mc33887 is my best bet right now.

Cabe
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0 Catwell over 15 years ago in reply to ratsept

L6025 runs 2.8A, full bridge. Amp output too low.
mc33887 runs 5A, half bridge. Output is right, could use two in concert.

Thanks, the mc33887 is my best bet right now.

Cabe
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0 Former Member over 12 years ago in reply to Catwell

I know this post is old, but I too am looking to build a bi-polar stepper motor controller in the 5 AMP range... Have you found anything yet?
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0 Former Member over 12 years ago in reply to Former Member

What about using two TI DRV8843 chips in parallel, would something like that work? Or should I be looking at a solution to perhaps use a TI 4988 to drive external MOSFET's?

I am not an electrical engineer by any means, but I do know enough to get myself in a lot of trouble...
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0 Former Member over 12 years ago in reply to Catwell

I must say I am not impressed by Newark compared to Farnell as a supplier even though they are both parts of Premeir Farnell. It shows up the significant diffference in the customer experience of British and US companies with the British model far more favourable, I know it must seem ridiculous to you as surface mounting afficionados, but to obtain decent thermal performance you need a device that can dissipate to metal like this one: http://uk.farnell.com/semikron/skd51-08/bridge-rectifier-50a-800v-3ph/dp/9287078
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