EVAL6563-80W L6563 80W High performanceTM PFC with active tracking boost function Data Brief General description L6563 is a current-mode PFC controller operating in Transition Mode (TM). Based on the core of a standard TM PFC controller, it offers improved performance and additional functions, such as active tracking boost function. In some applications it may be advantageous to regulate the output voltage of the PFC pre-regulator so that it tracks the RMS input voltage rather than at a fixed value like in conventional boost pre-regulators. This is commonly referred to as "tracking boost" or "follower boost" approach. With the L6563 this can be realized by connecting a resistor between the TBO pin (pin 6) and ground. The board implements a 80 W, wide-range mains input, PFC pre-regulator. Evaluation board January 2007 Rev 1 For further information contact your local STMicroelectronics sales office. 1/5 www.st.com Features 1 EVAL6563-80W Features Figure 1. EVAL6563 - 80W schematic Boost inductor spec: ● E25x13x17 core, 3C85 ferrite or equivalent ● 1.6 mm gap for 0.43 mH primary inductance ● Primary: 80 turns 20x0.1 mm ● Secondary: 9 turns 0.1 mm Figure 2. 2/5 EVAL6563-80W: PCB and components layout (top view, real size: 64x94 mm) EVAL6563-80W Note: 1 Features Figure 3. EVAL6563-80W: soldering side (top view) Table 1. EVAL6563 - 80W: evaluation results at full load Vin(VAC) Pin (W) Vo(VDC) ∆VO(Vpk-pk) Po (W) η(%) PF THD (%) 90 85.3 219.4 16.6 79.64 93.4 0.999 3.7 115 84.9 244.1 15.0 80.80 95.2 0.998 4.3 135 83.7 263.7 13.9 80.16 95.8 0.997 4.8 180 83.5 307.6 14.5 80.28 96.1 0.993 6.0 230 85.2 356.7 13.0 81.33 95.5 0.984 7.7 265 85.0 390.6 12.1 80.85 95.1 0.974 9.5 Measurement done with the line filter shown in Figure 4. Table 2. 2 EVAL6563 - 80W: evaluation results at half load Vin(VAC) Pin (W) Vo(VDC) ∆VO(Vpk-pk) Po (W) η(%) PF THD (%) 90 43.4 219.9 8.6 40.90 94.2 0.997 4.8 115 42.6 244.5 7.7 40.10 94.1 0.994 5.7 135 43.1 264.0 7.3 40.39 93.7 0.989 6.5 180 43.8 307.7 7.7 40.31 92.0 0.978 8.4 230 45.6 356.8 6.8 41.03 90.0 0.951 9.6 265 46.0 390.7 6.7 40.63 88.3 0.920 14.2 Measurement done with the line filter shown in Figure 4. Figure 4. Line filter ( not tested for EMI compliance ) 3/5 Revision history EVAL6563-80W Figure 5. 2 Revision history Table 3. 4/5 EVAL6563 - 80W: Vout vs. Vin ( tracking boost ) Revision history Date Revision 10-Jan-2007 1 Changes First issue EVAL6563-80W Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. 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