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TPS56221DQPT 데이터시트(PDF) 9 Page - Texas Instruments |
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TPS56221DQPT 데이터시트(HTML) 9 Page - Texas Instruments |
9 / 25 page 40 42 44 46 48 50 52 54 −40 −25 −10 5 20 35 50 65 80 95 110 125 Junction Temperature (°C) VVDD = 4.5 V VVDD = 12 V 450 500 550 600 650 700 750 −40 −25 −10 5 20 35 50 65 80 95 110 125 Junction Temperature (°C) VOV VUV 50 60 70 80 90 100 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Load Current (A) VOUT = 0.8 V VOUT = 1.0 V VOUT = 1.2 V VOUT = 1.8 V VOUT = 2.5 V VOUT = 3.3 V fSW = 500 kHz VVIN = 12 V TA = 25°C 70 75 80 85 90 95 100 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Load Current (A) VOUT = 0.8 V VOUT = 1.0 V VOUT = 1.2 V VOUT = 1.8 V VOUT = 2.5 V fSW = 500 kHz VVIN = 5 V TA = 25°C 0 2 4 6 8 10 12 14 16 18 20 22 24 26 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature (°C) VOUT = 0.8 V VOUT = 1.0 V VOUT = 1.2 V VOUT = 1.8 V VOUT = 2.5 V VOUT = 3.3 V VVIN = 12 V 0 2 4 6 8 10 12 14 16 18 20 22 24 26 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature (°C) VOUT = 0.8 V VOUT = 1.0 V VOUT = 1.2 V VOUT = 1.8 V VOUT = 2.5 V VVIN = 5 V TPS56221 www.ti.com SLUSAH5 – MARCH 2011 TYPICAL CHARACTERISTICS The efficiency curve shown in Figure 15 is measured with a 0.5- µH output inductor and a maximum DCR of 0.75 mΩ. The efficiency curve shown in Figure 16 is measured with a 0.3- µH output inductor and a maximum DCR of 0.54 mΩ. The power derating curves shown in Figure 17 and Figure 18 are measured on a 4 " × 3.25", 0.062" thick FR4 board with 6 layers and 1 oz. copper. Figure 13. High-Side Overcurrent Threshold vs. Junction Figure 14. Power Good Threshold Voltage vs. Junction Temperature Temperature Figure 15. Efficiency vs. Load Current (VVIN = 12 V) Figure 16. Efficiency vs. Load Current (VVIN = 5 V) Figure 17. Output Current vs. Ambient Temperature Figure 18. Output Current vs. Ambient Temperature (VVIN = 12 V) (VVIN = 5 V) Copyright © 2011, Texas Instruments Incorporated 9 Product Folder Link(s) :TPS56221 |
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