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7447462152 датащи(PDF) 10 Page - Infineon Technologies AG |
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7447462152 датащи(HTML) 10 Page - Infineon Technologies AG |
10 / 23 page AN-EVALLED-ICL8002G-B2 Phase Cut Dimmable Non-isolated Buck Converter for LED Retrofit Bulb with ICL8002G & CoolMOS ™ 600V C6 first valley point. This helps to reduce current spike as well as switching loss and thus improve both efficiency and EMI performance. Figure 5 shows typical switching waveforms. Figure 5 Typical operation waveforms: ZCV pin voltage (C1&Z1, yellow), shunt signal Vcs (C2&Z2, red), drain voltage Vds (C3&Z3, blue) and primary winding’s current (C4&Z4, green) showing quasi-resonant switching 9.4 Output Waveforms The single stage PFC design inevitably produces double mains frequency ripple at the output. Increasing output capacitance value helps reduce output ripple. However, this is often at the expense of the system’s form factor. In this demo board design, the output capacitor (C9) is sized for an output current ripple which exhibits no visible light modulation. Figure 6 shows the measured waveforms of output voltage and output current. The modulation depth of the current ripple is about 25%. Figure 6 Typical waveforms: Output voltage (C2, blue) and output current (C4, green) Application Note 10 Version 1.1, 2012-08-03 |
Аналогичный номер детали - 7447462152 |
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Аналогичное описание - 7447462152 |
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