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IXDN0037 датащи(PDF) 26 Page - IXYS Corporation |
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IXDN0037 датащи(HTML) 26 Page - IXYS Corporation |
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26 / 31 page ![]() Ballast Demonstrator User Guide -25 7629A–AVR–04/06 The boost switch ON time is maintained constant over each half cycle of the input volt- age sinusoid. Therefore the peak current for each switching cycle is proportional to the line voltage which is nearly constant during Ton. (Ipeak = Vin x Ton/L). Since the aver- age value of a triangular waveform is half its peak value, the average current drawn is also proportional to the line voltage. Figure 6-4. Main voltage supply cutting PFC DRIVING Main Supply Voltage Ipeak = Vin x Ton / L Imean = Ipeak/2 Actual switching frequency is higher than shown |
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