Schematic for the NCP1612GEVB Evaluation Board Power Section Vin U1 GBU606 . . + C4 220nF Type = X2 D2 1N5406 L2 200 µH (np/ns=10) C5 470 nF / 400 V IN D1 MUR550 Rth1 B57153S150M Vaux - R2 1000k V line R1 1000k R6 22 C1 1 nF Type = Y2 D3 1N4148 C2 1 nF Type = Y2 CM1 DRV R5 2.2 Q2 MMBT589LT1G Q1 IPA50R250 R4 10k I sense R3 80m 3W L1 150µH D4 1N4148 F1 C6b 68µF/450V C7 22µF/50V DZ2 33V V CC + Earth - N 90-265 Vrms 3/2/2012 C6a 68µF/450V GND C3 680nF Type = X2 L Vbulk Socket for External VCC Power Source -1- www.onsemi.com Control Section V line Vbulk R8 560k R29 1800k R22 560k R9 1800k R35 27k R11 27k R32 120k R10 1800k D6 1N4148 C13 10nF pfcOK C8 1nF R12 27k C16 470pF R17 120k C9 2.2µF R16 120k R15 120k Vin V CC BUV R25 1800k R26 120k R27 560k C17 1nF R23 1800k R24 1800k R28 1800k C10 220nF R14 270k 1 10 2 9 3 8 4 7 5 6 C11 220nF R13 120k R18 27 D5 1N4148 Vaux R20 4.7k R7 0 DRV R21 4.7k I sense C18 10nF R33 39k C15 220nF DZ1 22V GND 3/2/2012 -2- www.onsemi.com