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Super Stepper

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Super Stepper

Postby JB_AU » Sun Jan 25, 2015 1:43 pm

irf7343.png
irf7343.png (9.63 KiB) Viewed 22200 times


While attempting to drive a stepper with the attiny85 and succeeding :D , one of my current projects uses the tiny85 with step & direction inputs and 4 outputs to drive a bipolar. So wanting to use a larger stepper 48v 3A i have just finished designing this!

The IRF7343 is a N&P Paired Hexfet (SO8) IC, if driven with SI 5v allows output up to 3.8A per phase. Yes it's an smd part, fiddly at best. The arrangement allows for easier integration, easier cooling & way cheaper than an equivalent SSR. It can handle 55V 4.8A if VGS (SI) is @ 10v.

@70c per unit vs $40+ per SSR of equivalent stats.

I hope somebody find this helpful :D
"Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe."

Albert Einstein
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Re: Super Stepper

Postby JB_AU » Sun Jan 25, 2015 2:47 pm

Upload of
GRBL.zip
GRBL Toolpaths
(1.19 KiB) Downloaded 1503 times
GRBL toolpaths
"Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe."

Albert Einstein
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Re: Super Stepper

Postby jjs » Sat Aug 15, 2015 9:32 pm

thank you
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