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FAN7530 데이터시트(PDF) 33 Page - Fairchild Semiconductor |
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FAN7530 데이터시트(HTML) 33 Page - Fairchild Semiconductor |
33 / 37 page © 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN9611 / FAN9612 • Rev. 1.1.3 33 Evaluation Board FEB388: 400W Evaluation Board Using FAN9611/12 FEB388 is an evaluation board for an interleaved dual boundary-conduction-mode PFC converter rated at 400W (400V/1A) power. With phase management, the efficiency is maintained above 96% even down at 10% of the rated output power. The efficiencies for full-load condition exceed 96% as shown below. Figure 63 and Figure 64 show the phase management with the default minimum threshold values of the IC. They can be adjusted upwards to achieve a different efficiency profile (Figure 65 and Figure 66) where phase management thresholds are adjusted to 30% / 44% of the full load. For full specification, design schematic, bill of materials and test results; see FEB388 — FAN9611/12 400W Evaluation Board User Guide (AN-9717). Input Voltage Rated Output Power Output Voltage (Rated Current) VIN Nominal: 85V~264VAC VDD Supply: 13V~18VDC 400W 400V (1A) FIGURE 63. Measured Efficiency at 115VAC (Default Thresholds) FIGURE 64. Measured Efficiency at 230VAC (Default Thresholds) Figure 65. Measured Efficiency at 115VAC (Adjusted Thresholds) Figure 66. Measured Efficiency at 230VAC (Adjusted Thresholds) FAN9612 Efficiency vs. Load (115 VAC Input, 400 VDC Output, 400W) 85 90 95 100 0 102030405060708090 100 Output Power (%) With Phase Management Without Phase Management FAN9612 Efficiency vs. Load (230 VAC Input, 400 VDC Output, 400W) 85 90 95 100 0 10 2030 4050 60 708090 100 Output Power (%) With Phase Management Without Phase Management |
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