Yes I though as much. I am running at 15us at the moment. I am thinking to use a MCU or a small FPGA to read the low frequency PWM and then translate that to a 40khz PWM signal.
>On 25 August 2015 at 10:16, Marius Liebenberg <[email protected]> >wrote: >> I am trying to generate a pwm signal to drive a laser power source >>using >> the spindle pwmgen. The minimum frequency must be 20khz. I read in >>the >> manual that pwmgen is not good on higher frequency. The question is >>will >> it reach 20khz or must I rather try using a stepgen? > >Stegen won't work either, that's a variable rate output, not a >variable duty-cycle, > >The problem at high frequencies with pwmgen isn't with the component, >it is with the base-thread frequency. >What is your base-thread frequency? The output can turn on and off at >that frequency for 50% duty cycle. >As you drop the base frequency the number of possible duty-cycles >increases. > >-- >atp >If you can't fix it, you don't own it. >http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
