Squarewave to L6506 stepper phase select logic IC??

mailmail9112 · ‎2012-11-16

Posted on November 17, 2012 at 03:50

I'm looking for a chip that does the logic part of converting a squarewave (from an

http://www.analog.com/static/imported-files/data_sheets/AD9833.pdf

SPI waveform generator) to phase select signals for controlling an

http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00000097.pdf

. I've found a circuit from the

http://www.docstoc.com/docs/24431264/Universal-Sequencer-for-a-Four-Phase-Unipolar-Stepper-Motors

2006 that shows a nice fullstep/halfstep/wavedrive selectable converter that can be built with cmos chips but this really puts the chip count through the roof. I know about chips like the

http://www.onsemi.com/pub_link/Collateral/EN5228-D.PDF

that include the whole process including 3A drive capability but I need the 6A+ from a

http://www.ti.com/lit/ds/symlink/drv8432.pdf

.

Anybody know the chip I'm looking for?

TIA

UPDATE > I'm new to FPGA design.. would the circuit I've linked to above be a good candidate for this approach? Any suggestions on CPLD, etc family?

#stepper-motor #stepper-motor-driver

Enrico Poli · ‎2012-12-04

Posted on December 04, 2012 at 16:25

Hello,

I think you could use the L297 instead of the L6506. In this device both the current control and the step sequence generator are integrated.

Kind Regards

Enrico