TO PI EXPERT
A. I could develop a 15W, 350mA LED driver model with LNK417.
I am enclosing the result, which is more or less acceptable.
B. After that I have been struggling to develop a 12-LEDs, 700mA in series , but I could not stabilize with all possible tuning. I have tried with 418 & 419. I tried your latest software (XL) and was following that. There was no line regulation & PF below expectation. I am enclosing the printout of the software output.
C. Then I was trying to simulate your DER286. The result was no way matching: (1) Inductance is 1588uH in place of 2072uH ( as in DER286 ), (2) CORE PQ2625 is not within PI-XLS designer, (3)Why should I suddenly change the VOR from 80 to 100? My design sheet is enclosed.
I TRY WITH REAL LEDs & NOT RESISTIVE LOAD.
Please help me to acheive (B).