when use webbench to run simulaton,
24V to 5V , I see under 0.5A , like as 10mA , 20mA , I can see the very high efficiency performance , reach 90% above alomost.
But , when change design to 24V to 12V
I see the efficiency just remain about 50~60% at under 0.5A.
So , what does the main matter about the performance decrease so much ?
High side mos Ciss and Rdson ? Or LMS3655S control scheme can not reach duty=50% and keep high effieiency?