https://devzone.nordicsemi.com/f/nordic-q-a/84033/difference-bewteen-top-value-and-duty-cycle-in-pwm-driverHi, I&#39;m trying to use the pwm driver to turn off or on a dc motor (which the speed will variate via the pwm signal). I need to achieve a frequency between 20kHz and 100kHz and to variate the dutycyle. I do understand that the frequency is my main frequencyen-USTelligent Community 13Tue, 25 Jan 2022 12:09:28 GMThttps://devzone.nordicsemi.com/thread/349514?ContentTypeID=1Tue, 25 Jan 2022 12:09:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8d9861c2-03d4-482d-95e1-5b9e64866dcdChristos.Bou<p>Thanks you, that vas very clear !</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/349511?ContentTypeID=1Tue, 25 Jan 2022 11:57:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:03de6994-c067-4e74-b972-986ed3e557c3Sigurd<p>Hi,</p> [quote user=""]I put 500kHz with a top value of 6, I&#39;ll have a frequency of 83,33kHz. (is it correct ?)[/quote] <p>Correct.</p> [quote user=""]I don&#39;t understand how the duty cycle is working[/quote] <p>In short, it&#39;s the ratio between&nbsp;seq_value and top value. With&nbsp;duty_forward/duty_reverse&nbsp;set to 3, you should get 50% duty cycle.</p> [quote user=""]Is it correct to make the top value minus the duty cycle (which duty_forward is a uint16_t, so his value is from 0 to 65535) to get the correct comparaison ?[/quote] <p>Yes, but limited by top_value, so 0 to 6 is valid values for&nbsp;<span>duty_forward/</span><span>duty_reverse in this case.</span></p><div style="clear:both;"></div>