brushless motor controler

Carlos Guillermo ,wrote

>I ordered 4 of those motors. They look nice, but I missed the fine

print

>about them being brushless!
>This model senses the rotor position from extra tracks on the

encoder wheel,

>instead of the hall sensor setup I'm familiar with. Can you point

me to the

>brushless motor control chips you mentioned, and maybe also an

appnote

>sample circuit?
>
>Thanks,
>Carlos Guillermo

I did the same thing myself,after checking back I found that there
was no fine print about them being brushless in the catalog,only on
the data sheet,live & learn as they say.Anyway after finding out what
I had I started looking for a
driver solution
here are some of the options Im looking at now

brushless DC motor controller
Unitrode UC3626 or UC3625 sold by Texas insturments
http://www.ti.com/sc/docs/products/analog/uc3625.html
$4.53-$5.15 from Arrow Electronics http://www.arrow.com
Motorola MC33035 $3.36 Arrow
Allegro A3932SEQ or A3933SEQ(both drive high side mosfets
directly)$5.81
still looking motorola looks ok unitrode or allegro starting to look
better

high side driver
Intersil HIP4083(3x) or HIP4086(6x) $3.65 & $7.17 Arrow

power amp (all n-channel)
Texas insturments TPIC1310 3-HALF H-BRIDGE (2.5A continuous 12A pulse)
$3.60ea from http://www.digikey.com/

there are a lot of options out there from other makers,most will read
ttl level encoders &/or hall inputs,check the data sheet to be sure
some take a PWM speed input most like a voltage level,all the ones
Ive seen so far need a direction+speed input,almost all of the data
sheets have examples using a switch for direction & a pot to set the
speed(stand alone use)
the option Im working on is
PC->DAC+8255->UC3625->HIP4086->TPIC1310->motor then
encoder->LS7266R1->PC
price on a 4 axis setup adds up fast but is still 1/4 what a
comercial kit is going for most places
btw arrow seems to be mostly an oem dealer but if you bug them enough
they will sell "samples"
hope this helps
BFP