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FAN7530 데이터시트(PDF) 23 Page - Fairchild Semiconductor |
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FAN7530 데이터시트(HTML) 23 Page - Fairchild Semiconductor |
23 / 37 page © 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN9611 / FAN9612 • Rev. 1.1.3 23 Figure 33. Interleaved BCM PFC Schematic Using FAN9611/12 Step 2: Estimated Conversion Efficiency Use the estimated full-load power conversion efficiency. Typical value for an interleaved BCP PFC converter is in the 0.92 to 0.98 range. The efficiency is in the lower half of the range for low-power applications. Using state-of- the-art semiconductors, good quality ferrite inductors and selecting lower limit for minimum switching frequency positively impacts the efficiency of the system. In general, the value of 0.95 can be used unless a more accurate power budget is available. Step 3: Maximum Output Power per Channel 2 P 1.2 P OUT CH MAX, (6) A margin of 20% has been added to the nominal output power to cover reference inaccuracy, internal component tolerances, inductance mismatch, and current-sense resistor variation to the per-channel power rating. |
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유사한 설명 - FAN7530 |
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