Hello All,
I have tried to simulate lt249 using the example circuit given by ltspice(LT1249_TA01) and it worked, but once I have changed to load from 2kohms to 120ohms to fit my application the waveform of the input current was not sinusoidal as i was expecting to be and voltage dropped to 300V,please see the attached picture. My switching frequency is 100kHz, 240Vin @50 Hz & my power rating is about 1350w and its withing the range specified with datasheet of lt1249 which is 1500w. So, could any one clarify this to me and could give me a solution how to fix this issue.
Thanks
