18WATTS (18V/1A)

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      I had design of 18V/1A using LNK 416 EG with 0.786PF & 70% efficiency.Plz help me to get 0.9PF with 85% efficiency

Thanks and Regards,


Transformer details25.65 KB
schematic21.45 KB


I replied to a similar post, but in addition, get rid of the thermistor if possible.

Please check the rating of the CMC and differential inductor and if possible, use a lower resistance inductors.

By the way, please check your primary clamp connection.D2 should be connected to the anode of D3. Please refer to AN49 for further tips.