hi
I want to design a constant current led driver with this detail by HV9910:
input voltage: 200-240 V AC ___50Hz
output voltage: 54-108 V DC ___300mA
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I designed sample circuit like the HV9910 datasheet and i Get assistance of HV9910 software,
this picture is a result:
View attachment 74741
but when i connect it to 220V this circuit not work just LEDs make a little blink and turn off.
please help me to design it.
thanks for your help