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IR3551MTRPBF Datasheet(PDF) 9 Page - International Rectifier |
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IR3551MTRPBF Datasheet(HTML) 9 Page - International Rectifier |
9 / 22 page September 10, 2012 | FINAL DATASHEET 9 IR3551 50A Integrated PowIRstage® TYPICAL OPERATING CHARACTERISTICS Circuit of Figure 32, VIN=12V, VOUT=1.2V, ƒSW = 400kHz, L=150nH (0.29mΩ), VCC=7V, TAMBIENT = 25°C, no heat sink, no air flow, 8-layer PCB board of 3.7” (L) x 2.6” (W), no PWM controller loss, no inductor loss, unless specified otherwise. Figure 7: Typical IR3551 Efficiency Figure 8: Typical IR3551 Power Loss Figure 9: Safe Operating Area, TCASE <= 125°C Figure 10: Normalized Power Loss vs. Input Voltage Figure 11: Normalized Power Loss vs. Output Voltage Figure 12: Normalized Power Loss vs. Switching Frequency 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 200 300 400 500 600 700 800 900 1000 Switching Frequency (kHz) -3.3 -2.2 -1.1 0.0 1.1 2.2 3.3 4.4 5.5 6.6 7.7 8.8 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 Output Voltage (V) -3.3 -2.2 -1.1 0.0 1.1 2.2 3.3 4.4 5.5 6.6 7.7 8.8 0 5 10 15 20 25 30 35 40 45 50 55 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Ambient Temperature (°C) 400LFM 200LFM 100LFM 0LFM 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 0 5 10 15 20 25 30 35 40 45 50 Output Current (A) 0 1 2 3 4 5 6 7 8 9 10 0 5 10 15 20 25 30 35 40 45 50 Output Current (A) 0.85 0.90 0.95 1.00 1.05 1.10 1.15 5 6 7 8 9 10 11 12 13 14 15 Input Voltage (V) -3.3 -2.2 -1.1 0.0 1.1 2.2 3.3 |
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