Hello, (L6562DTR)I have encountered some problems when using this chip and hope to get some suggestions from you； ”The PF output voltage of 480V FC load is 0.7435“ The power input voltage is 250V-528VAC, with PFC+ flyback. The PFC BUS voltage is 760V, and the power output is 150W；When the input is 480VAC and the output is fully loaded, the THD is abnormal, ranging from 10% to 20% (5% for normal products), and at the same time, the PF value also drops and there is noise from the power supply
How can this problem be avoided
