PMP7755, Non sync buck controller Reference Design with 24V input and 18V @ 4.2A output

PMP7755, Non-Synchronous Buck Controller for LM3409 with 24V DC input and 18V output @ 4.2A. The load is 9 strings with 6 LEDs per string. It uses a motion detector with PIR (passive infrared) dimming as well as 0-10V analog dimming. It has differential high side current sensing which enables setting the dimpoint on PIR