Brushless DC Servo Motor Amp for use w/5234 eTPU?

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Ridgeglider
Posts: 513
Joined: Sat Apr 26, 2008 7:14 am

Brushless DC Servo Motor Amp for use w/5234 eTPU?

Post by Ridgeglider »

Does anyone have suggestions for some small and efficient servo amplifier boards for driving a brushless DC motor from the 5234 eTPU pins? The motor is running at ~250-300W continuous, ~5200RPM max no load, and pulling around 6-7A at 48V. I'm looking for motors and ~4000 count/rev hall-effect or opto encoders too, so suggestions welcome there too.
v8dave
Posts: 333
Joined: Thu Dec 31, 2009 8:31 pm

Re: Brushless DC Servo Motor Amp for use w/5234 eTPU?

Post by v8dave »

Hi RG,

What are you looking for here? Something cheap for hobby use or commercial?

I found a 48V H-bridge driver design here that would work with the eTPU.

http://www.techknowman.com/Electronics/ ... BRIDGE.htm

For the motors, check out some of the robot builder websites for low cost options but not sure if they offer the power output you need.

Cheers,
Dave...
Ridgeglider
Posts: 513
Joined: Sat Apr 26, 2008 7:14 am

Re: Brushless DC Servo Motor Amp for use w/5234 eTPU?

Post by Ridgeglider »

V8, Thanks for link to schematic. Instead of a schematic, I'm looking for an off-the-shelf, board-level, industrial product as our volumes are quite small. It should also be a 3 phase driver for use with a brushless dc motor not a simpler H-bridge: ideally with current monitor, encoder and protections for things like over current, short circuit, over/under voltage, over-temperature etc. There are lots of these boards out there, but was wondering if anyone had success connecting a particular one to the eTPU?
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