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13892 датащи(PDF) 77 Page - Freescale Semiconductor, Inc |
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13892 датащи(HTML) 77 Page - Freescale Semiconductor, Inc |
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77 / 156 page ![]() Analog Integrated Circuit Device Data Freescale Semiconductor 77 13892 FUNCTIONAL DEVICE OPERATION SUPPLIES S W1 P WM No P ulse Ski pp ing m ode Efficien cy V out = 0,725 V 0% 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % 0 1 0203 040 5060 7080 90 10 0 Ilo a d (m A) V in = 3 ,00 0 V V in = 3 ,60 0 V V in = 4 ,65 0 V S W4 P WM No P ul se S kipp ing m ode Efficien cy V out = 1.800 V 0% 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % 0 50 1 00 1 50 20 0 2 50 30 0 35 0 400 450 5 00 5 50 60 0 65 0 700 750 8 00 850 9 00 Il oa d (m A) V in = 3,0 00 V V in = 3,6 00 V V in = 4,6 50 V S W2 P WM No P ulse Ski pp ing m ode Efficien cy V out = 1.250 V 0% 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % 0 1 0203 040 5060 7080 90 10 0 Ilo a d (m A) V in = 3 ,00 0 V V in = 3 ,60 0 V V in = 4 ,65 0 V S W2 P WM No P ul se S kipp ing m ode Efficien cy V out = 1.250 V 0% 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % 0 50 1 00 1 50 20 0 2 50 30 0 35 0 400 450 5 00 5 50 60 0 65 0 700 750 8 00 850 9 00 Il oa d (m A) V in = 3,0 00 V V in = 3,6 00 V V in = 4,6 50 V S W4 P WM No P ulse Ski pp ing m ode Efficien cy V out = 1.800 V 0% 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % 0 1 0203 040 5060 7080 90 10 0 Ilo a d (m A) V in = 3 ,00 0 V V in = 3 ,60 0 V V in = 4 ,65 0 V S W4 P WM No P ul se S kipp ing m ode Efficien cy V out = 1.800 V 0% 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % 0 50 1 00 1 50 20 0 2 50 30 0 35 0 400 450 5 00 5 50 60 0 65 0 700 750 8 00 850 9 00 Il oa d (m A) V in = 3,0 00 V V in = 3,6 00 V V in = 4,6 50 V Figure 18. Buck Switcher PWM (No Pulse Skipping) Efficiency |
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