Hi need help for pwm in 300khz 500khz pwm with variable duty.

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hi guys,

thanks a lot for your support. will try to use a boost controller chip. while writing the reply to you. i tried to check for a cheap chip to do the variable boost controller and found this one:

LT3757AEDD#PBF Boost, Flyback, SEPIC, and Inverting Controller DFN 10 $2.94

its NOT expensive and from the preliminary data has the option to synchronize the clock externally making it configurable from any arduino with ad8950 or ad8951, for boost buck and fly-back. so it seem to be perfect candidate for arduino in numerous application/ more like experiments :stuck_out_tongue: i may try it :). i also got the datasheet for chip used for the arduino due board thanks to the link from "dlloyd" that will surely help a lot.

will go with arduino due as soon as i can :stuck_out_tongue: :slight_smile:

thanks again for you help guys,

Timi