LED backlight circuit, output voltage 51V, each LED current 105ma. The current problem is that the output inductor l546 has been whistling. I try to adjust the FSW frequency and Iset current are useless, what is the solution. The inductance l546 is in accordance with the official recommended model.
LED背光电路,输出电压51V,每一路LED电流105mA。目前遇到的问题是输出电感L546一直在啸叫。我尝试调节FSW频率和ISET电流都没有用,请问有什么办法解决。电感L546按照官方推荐的型号。