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Download NCL30051LEDGEVB - ON Semiconductor
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NCL30051LEDGEVB AC In F1 1.5A R1A 560K x2 R1B T C1 0.22 ”X” L1 C2 0.22 ”X” D1 − D4 MRA4007 x4 C3 0.22uF 400V 1 L2 D5 1N5406 4 700uH 3 6 Q1 TO−220 R8 1.2K C8 5.6nF Z1B 82 uF R2 C5 400V 0.15 0.5W C4 82 uF 400V D6 MURS360 Z1A R14 R18 MRA4007 D12 2.7M,0.5W MMSZ5248B 2.7M,0.5W HVout R3 560K 0.5W R4 560K 0.5W JMP1 HVin D11 MRA4007 Drive Ground D9 D10 MURA160 16 R40 1.2K U1 NCL30051 1 14 15 3 13 2 4 11 12 9 10 5 7 6 8 C14 C15 C9 0.22 25V 10K MMBT 2907A R43 10 GND R5 R6 Q8 10K NDD04N60ZT MMBT A06LTG Q3 C17 1.2nF D7 JMP3 0.1uF C6 400V MURA160 Q2A Q2B C7 0.1uF 400V 2 5 T1 7 11 10 14 C CVCC Feedback A C PWM Dim A Pirmary Ground C27 Plane 1 U2 4 2 PS2561A R42 5.1K 1 2 PS2561A U3 2.7K R15 MMBT A06LTG 4 3 R41 10K MURA160 D8 NDD04N60ZT Q7 D13 MMSD 4148B 3 http://onsemi.com TH1 R7 10 0.25W R9 27.4k R10 0.1 C11 4.7K, 0.5W C10 R19 27.4k C13 0.68uF 1nF 0.1 Figure 1. Primary Side Schematic R17 820pF C12 100pF R16 1K 330uF 35V 3 NOTES: 1. Q2A, Q2B are D−Pak devices. 2. L1 is Coilcraft E3492−AL (2.9 mH) 3. Heavy schematic lines are recommended ground plane areas − blue is power ground; black is signal/logic ground, green is drive ground. 4. NCL30051 signal grounds and associated components should be single−point connected to the power and drive ground planes as shown in schematic. 5. L2 and T1 are PQ2020 cores with 14 pin bobbins. 6. Q1 requires small heatsink. 7. C10, C17, and Q7/R40 should be as close to associated U1 pins as possible. R11 680K 0.5W R12 680K 0.5W R13 Open Logic/signal Ground C16 10K
