All ICs I found, have fixed frequency with variable duty cycle. I think programmable frequency with variable duty cycle is must to drive BLDC motor. Is that right? Can you please suggest one IC.
On Wednesday, 18 June 2014 01:25:39 UTC+5:30, jmelson wrote: > > > > On Tuesday, June 17, 2014 5:14:00 AM UTC-5, khajam...@gmail.com wrote: >> >> Hi jmelson ! >> I am making my own cape. >> I have found one PWM controller (TLC59116) from TI >> http://www.ti.com/lit/ds/symlink/tlc59116.pdf >> but it says individual channels are adjustable but with a fixed >> frequency of 97 khz. Would that be enough or adjustable frequency is a must >> feature for BLDC motor. >> >> >> 97 KHz may work for some motor drive setups, but that frequency may be so > high that the power transistors or driver circuits will > run hot. You'd have to look at specific power stages to decide whether 97 > KHz is suitable or not. Most motor drives run between > 20 and 50 KHz. > > Jon > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
