I am looking for a stepper motor driver that can handle up to 5A

I am looking for a stepper motor driver that can handle up to 5A. But most of stepper drivers i have seen can only handle up to 2A. is there anyone who knows 5A or higher A stepper motor driver?

Many industrial stepper drivers will handle that. But they cost. have a look on eBay perhaps?

You might be able to pair up two high current h-bridges to do the job.

You need to look at the CNC scene, somewhere like this:- http://www.diycnc.co.uk/ They do drivers and kits.

Two of the below tle5206-2 h-bridges ($7 each from Digikey) might work.

http://www.infineon.com/dgdl/tle5206-2_1.pdf?folderId=db3a304412b407950112b438231a6a4f&fileId=db3a304412b407950112b43823a06a50

At a buck an amp this might be worth a try.

http://robokitsworld.com/index.php?main_page=product_info&products_id=15

Gecko make a 7 amp one.

http://www.geckodrive.com/geckodrive-step-motor-drives.html

I have just purchased one of their 3.5 amp stepper controllers because the Polou ones did not have enough grunt. I have not wired it up yet, too much to do!

I have not looked at the 7 amp ones but the one in bought (G251x) has a couple of terminals that you can attach an ordinary 1/4 watt resistor to limit the current. So assuming yours uses the same system, to limit it to 5 amps, just insert a 5 k resistor, but check the manual.

zoomkat:
You might be able to pair up two high current h-bridges to do the job.

No, you’d need four H-bridges to double up, a bipolar stepper uses two, one for each phase

MarkT:

zoomkat: You might be able to pair up two high current h-bridges to do the job.

No, you'd need four H-bridges to double up, a bipolar stepper uses two, one for each phase

You sure about that? Seems most of the common bipolar stepper drivers are dual h-bridge units.

http://www.stepperworld.com/Tutorials/pgBipolarTutorial.htm

These are good; http://www.aliexpress.com/item/Stepper-Motor-CNC-Driver-2M982-7-8A-Controller-Router-Mill/446865388.html a bit pricey, but its one of the cheapest you will get.

zoomkat:

MarkT:

zoomkat:
You might be able to pair up two high current h-bridges to do the job.

No, you’d need four H-bridges to double up, a bipolar stepper uses two, one for each phase

You sure about that? Seems most of the common bipolar stepper drivers are dual h-bridge units.

http://www.stepperworld.com/Tutorials/pgBipolarTutorial.htm

Of course, that’s why you need four to double-up the current handling - we’re talking about
increasing the current-handling if you notice…