Schematic for the NCP1255PRNGEVB Evaluation Board C11 680p R18 80 12 30 24 D6 P6KE220 32 V aux. 5 - + . 2 19 R13 10 IN R19 820k 34 1 27 L1 . 11,12 1 R12 0 C13 47uF C2 680uF . R3 1k 0V 21 33 D1 MUR160 26 31 2 x 27 mH Schaffner RN114-0.8/02 23 D3 1N4937 R14 2.2Meg R20 390k 7,8 6 16 44 IC4 KBU406 D2 MURD530 C1 33nF 200 V R16 331k D4 1N4148 U1 Eris 6 25 C7 100uF C12 X2 470n R9abc 1Meg 3x330 k R35abc 1Meg 1 8 2 7 13 3 6 5 4 5 Q1 STP7Nk80ZFP 17 3x330 k F1 250V Type = 2AT 35 C10 47p 11 R15 1k U2B R1 2.2k U2A SFH-615A Q2 2N2907 C15 0.1uF R17 118k 3 R10 1k 4 85-260 Vac R6 22 15 C8 100p 1 kV 14 C5 1nF C9 22n 18 20 C4 220pF C6 1u R5 80k C3 10uF R7 4.3k 10 R24 not wired R2a 1.5 0.5 W 22 36 R2b 1.5 0.5 W D5 1N973 C14 2.2nF U3 NCP431 R11 10k Y1 12/13/2012 -1- www.onsemi.com