Schematic for the NCL30001LEDGEVB Evaluation Board C2 MRA4007T 0.47 "X" 0.47 "X" 1M 0.5W Z1 C3 0.1uF 600V R7 R6 365K 365K D5 R9 R10 R11 30.1K 332K 365K R2 560K 0.5W MMBTA06LT1G Q3 D6 MURS 160T Z3 C6 C5 220uF 100uF MMSZ5245B 50V 35v C11 4.7uF 25V C12 470pF C13 33nF 0.1 1 11 Q1 SPP11N80C3 R23 4.7 ohm 12 6 11 7 8 10 C14 10nF 6 D7 13 U1 SFH615A-4 U2 R22 10K 9 4 1 3 2 D9 R21 R16 TBD MMSD 4148 100K C10 1nF + 5 C8 16 15 14 NC Z2 10K R14 R13 C29 0.1 2.2K R15 8 220 R17 56K R18 49.9K 20K Q2 7.32K 680pF C9 MMBTA06LT1G R12 30.1K R25 T1 100nF 2 400V MURS 160T R5 NCL30001 C28 1uF C7 2.2K 0.5W R8 2K 1/2W 1 2 3 4 5 R4 D10 C4 22uF 450V R3 36K 3W C15 0.1 C16 C17 C18 0.1 10nF 1nF R19 76.8K C1 R1 MRA4007T AC In D1 - D4 1N5406 x 4 L2 L1 1.5KE440A J1 F1 2.5A 10 ohm R20 0.10 ohm 0.5W C27 Notes: 1. 2. 3. 4. 5. 6. 7. 4/1/2010 Crossed schem atic lines are not connected. Heavy lines indicate power traces/planes. Z2/D9 is for optional OVP (not used). L1 is Coilcraft BU10-1012R2B or equivalent. L2 is Coilcraft P3221-AL or equivalent. L3 is Coilcraft RFB0807-3R3L or equivalent. Q1 and D8 will require sm all heatsinks. NCL30001 CVCC, 90 Watt Pow er Supply Primary Control Side Schematic -1- www.onsemi.com Xfmr + 1000uF, 63V x 3 8 R24 C19 100, 1/2W 1nF C21 C20 C23 0.1 100V 11 D8 MURH860CTG MJD243G Q4 R28 2.2K U2 1 R29 C25 43K 0.1 2 D11 7 MMSD4148 Z4 MMSZ5245B 1uF 0.1 0.1 R31 2.7K + R36 6 C31 Is R30 43K MMSD4148 U3A 4 - 2 + Vref C27 Q5 MMBTA06LT1G R38 100 R41 10 R34 R33 82K 6.2K 2.5V R42 10 10K R44 10K C35 C32 0.1 10nF 6 Gnd PWM In 1 kHz 1 kHz PWM Out 5 Vcc In Jumper if DIM Card not used 3 R43 10 J3 R39 R40 10K Vcc R32 68K Q7 2N7002KT1G 3 internal to U3 To Primary Ground Plane Q6 2.7K 1nF 5 LED Cathode NTD12N10T4G 5.1K Vs NCS1002 1 Z5 J2 R37 C33 C26 D12 Current Sense Sample & Hold 0.1uF U3B C30 C34 MMSZ5245B Is 8 feedback optocoupler 0.10 2W R27 PWM Output Switch 0.1 100V R26 4.7K, 0.5W Vcc = 14V LED Anode C24 C22 Vref In 2 Dimming Control Options Card Analog Dim out R35 3.9K Gnd 1 Common 2.2nF P1 R32 output current setting: 43K for 1.5 A out 68K for 1.0 A out 4/1/2010 50V/1.0A LED Driver CVCC Secondary Sensing with PWM Dimming Input & Option Card (Rev 3A) -2- www.onsemi.com Con1 (to P1) 1 kHz PWM Out 6 JMP1 Dimming Option Control Card Schematic (Rev 3) MC1455D P1 20K R1 U1 D1 Vcc MMSD 4148 4 D2 8 3 2 Notes: 1. Pots R1 and R9 are Vishay/Spectrol 43P type 20 turn cermet trimmers (Mouser part # 594-43P203 and 594-43P104) 2. All caps are SMD ceramic, 25V min. 3. TH1 is PTC thermistor - LS = 5mm 4. All semiconductors are ON Semi parts C3 5 6 Vcc (source) 68nF C2 0.1 5 Vcc In 0.1 1 C1 C4 Vcc 1.0 uF 25V R16 10K 2N7002KT1G MMBT2222A Q2 D3 R4 R2 10K Q1 150K MMSD4148 R3 20K TP1 R5 3 Vref In (2.5V) R7 + _ 4.3K C5 Bi - Level Switch U2A 10V TP2 1K 1nF Analog Dimming R8 Dim Select C6 15K TP3 10nF 5K TP4 Temp Compensation U2B R14 U2D C9 R13 C8 0.1 10K 10nF LM324DG C7 0.1 _ 1 Vcc 30K _ 10 U2C + R15 10K + 2 R10 11K _ R12 TH1 TBD Analog Dim Out R11 + 1 - 10V Analog JMP2 Common 4/1/2010 100K Dim Adj R6 P2 Bi-level JMP3 or PWM R9 -3- External 100K Pot