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L6668 Datasheet(PDF) 20 Page - STMicroelectronics |
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L6668 Datasheet(HTML) 20 Page - STMicroelectronics |
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20 / 23 page  L6668 20/23 Figure 46. Typical Application: 80W, WRM flyback; Electrical Schematic Table 6. Light load measurements on the circuit of figure 46 Output power Test condition Input power Pout = 0.5 W Vin= 110 Vac 0.71 W Vin= 230 Vac 0.86 W Pout = 0 W Vin= 110 Vac 0.09 W Vin= 230 Vac 0.17 W 88 to264 Vac BD1 DF04M C1 100 µF 400 V 4 R710 Ω 12 R12 1k Ω R13A,B 0.56 1/2W 5 7 10 R4 330 k Ω 815 16 C5 3.3 nF R8 4.03 k Ω 11 Q1 STP9NK65 C8A,B,C 680 µF 25 V GND L6668 C12 2.2 nF Y1 D2 STTH1L06 R3 10 Ω R5 47k Ω C2 47 µF 25 V 9 1 S-COMP VREF C4 100 nF C6 56 nF RCT SS R1 3 M Ω 3 GND ISEN OUT HV VCC DIS COMP SKIPADJ T1 18V/4.5A 13 STBY 1 2 3 R15 1.2 k Ω R14 4.3 k Ω R18 1.3 k Ω C7 2.2 nF C3 100 nF C10 100 nF R9 6.2 k Ω R17 8.06 k Ω R16 47 k Ω D3 1N4148 D4 STPS20150CT R2 3 M Ω OC1 PC817A TL431 N1 56T N2 10T N3 8T F1 T2A250V NTC1 R6 9.1 k Ω C9 100 nF J1 J2 D1 1.5KE200 6 N.C. R10 82.5 k Ω R11 47 k Ω OC1 PC817A T1: CORE E32/16/9, N67 PRIM. IND. 430 µH; lgap = 1mm 88 to264 Vac BD1 DF04M C1 100 µF 400 V 4 R710 Ω 12 R12 1k Ω R13A,B 0.56 1/2W 5 7 10 R4 330 k Ω 815 16 C5 3.3 nF R8 4.03 k Ω 11 Q1 STP9NK65 C8A,B,C 680 µF 25 V GND L6668 C12 2.2 nF Y1 D2 STTH1L06 R3 10 Ω R5 47k Ω C2 47 µF 25 V 9 1 S-COMP VREF C4 100 nF C6 56 nF RCT SS R1 3 M Ω 3 GND ISEN OUT HV VCC DIS COMP SKIPADJ T1 18V/4.5A 13 STBY 1 2 3 R15 1.2 k Ω R14 4.3 k Ω R18 1.3 k Ω C7 2.2 nF C3 100 nF C10 100 nF R9 6.2 k Ω R17 8.06 k Ω R16 47 k Ω D3 1N4148 D4 STPS20150CT R2 3 M Ω OC1 PC817A TL431 N1 56T N2 10T N3 8T F1 T2A250V NTC1 R6 9.1 k Ω C9 100 nF J1 J2 D1 1.5KE200 6 N.C. R10 82.5 k Ω R11 47 k Ω OC1 PC817A T1: CORE E32/16/9, N67 PRIM. IND. 430 µH; lgap = 1mm |
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