It is my understanding that LMZ22003 has the inductor integrated. I am trying to improve EMI and was wondering if the inductor was open or closed core or is that even an option for an integrated inductor.
Also for the LMZ22003, I tried sycronizing with an external clock at 800KHz (1.25us) with the 50ns on time (4.16%) duty cycle and it worked. However in the data sheet the min and max is 15 to 85% with a typical duty cycle of 50%. Am I suppose to stay within this range to ensure reliable operation or I am misunderstanding something?”
Adam