Schematic for the NCP1562 Evaluation Board 10/15/2007 L3 680uH C22 47 MMSD914 1 2 C31 C10 47 TX1 51665 D7 1 VAUX 1 1 2 MMSD914 D2 4T SEC_PWR1 2 3p3Vout L1 1.5uH C4 2.2 2.2 7 9 1 X3 C26 4 C7 0.1 22 CS 1 5 6 7 8 1.5u Pin9 C17 C18 C19 C20 C21 47 47 150 150 150 J4 1 Pin5 NTMFS4709N X4 R24 10k 1 2 3 5 6 7 8 R29 2.0 R19 NTMFS4709N 35m U1 CS 5 6 7 C12 300p Vref R8 32.4k 8 C8 0.1 CS GND OUT1 PGND OUT2 CSKIP RTCT tD SY NC SS VREF Vea 15 14 X2 OUT2 C13 0.01 13 4 12 C14 11 0.01 10 D4 R17 10k SEC_PWR2 R20 7.5k 348 D5 2 R5 44.2k 9 R30 C25 0.056 1 C29 MSD914 1000p R21 16.2k Vref NCP1562A C28 0.1 R6 10k R18 2.49k U4B 7 - 6 + 5 1p25 R13 U4A 1 348 LM258 LM258 SEC_PWR1 MSD914 3 R7 4.02k SEC_PWR2 R14 750 1 2 MSD914 C9 0.1 C6 0.1 R27 4.22k TLV431 U3 4 C5 1000p 2 3 2 5 U2 R22 open 1p25 49.9 D6 1 PS2703 4 R11 4.22k R12 2 + 1 2 2 1 8 3 Q1 BC817-25 D3 - 3 470p FF 4 R9 15k 4 UVOV 8 3 C24 16 4 2 Vref 10 Vaux IRF6217 R3 44.2k Vin 5 6 7 8 1 C30 open R2 1 1 2 3 0.01 R25 10k 1 2 3 X6 4 1 4 C16 32.4k 3 R4 R10 100 C11 100p MMSD914 1 2 Pin2 R16 10k 1 C23 0.01 2 MBRM120E R1 523k J5 3 X1 1 2 1 SUD25N15-52 4.75 D1 VAUX X5 4 5 6 7 8 R15 Pin4 5 6 7 8 R23 2.0 1T 6T 1 2 3 C3 2.2 NTMFS4709N C2 2.2 1 2 3 C1 4 Pin1 4 8 NTMFS4709N 4 J2 J3 L2 1 4 J1 R26 Q2 BC807 1 C15 24.9k 3 C27 R28 2.49k 2.2 2200p 10/15/2007 1 www.onsemi.com