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TPS54350PWPG4 Fiches technique(PDF) 11 Page - Texas Instruments |
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TPS54350PWPG4 Fiches technique(HTML) 11 Page - Texas Instruments |
11 / 34 page TPS54350 SLVS456C − OCTOBER 2003 − REVISED OCTOBER 2004 www.ti.com 11 TYPICAL CHARACTERISTICS Figure 5 −60 −50 −40 −30 −20 −10 0 10 20 30 40 50 60 VI = 12 V VO = 3.3 V IO = 3 A fS = 500 kHz See Figure 24 f − Frequency − Hz 10 1k 1M 10k 100k 180 150 30 60 120 90 −90 −120 −150 −180 −60 −30 0 LOOP RESPONSE Phase Gain Figure 6 −0.2 −0.1 0.0 0.1 0.2 0.0 0.5 1.0 1.5 2.0 2.5 3.0 LOAD REGULATION See Figure 24 IO − Output Current − A VI = 12 V VI = 6 V VI = 18 V Figure 7 −0.10 −0.05 0.00 0.05 0.10 6 8 10 12 14 16 18 LINE REGULATION See Figure 24 VI − Input Voltage − V 1.5 A 0 A 3 A Figure 8 50 55 60 65 70 75 80 85 90 95 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 EFFICIENCY vs OUTPUT CURRENT IO − Output Current − A VI = 6 V VI = 18 V VO = 3.3 V fS = 500 kHz See Figure 24 VI = 12 V Figure 9 VI = 12 V, VO = 3.3 V, IO = 3 A, fS = 500 kHz INPUT RIPPLE VOLTAGE Time − 1 µs/div VI(Ripple) = 100 mV/div (ac coupled) V(PH) = 5V/div See Figure 24 Figure 10 OUTPUT RIPPLE VOLTAGE Time − 1 µs/div VO = 20 mV/div (ac) VI = 12 V, VO = 3.3 V, IO = 3 A, fS = 500 kHz V(PH) = 5 V/div See Figure 24 Figure 11 PH PIN VOLTAGE Time − 1 µs/div V(LSG) = 5 V/div VI = 12 V, VO = 3.3 V, IO = 3 A, fS = 500 kHz V(PH) = 5 V/div See Figure 24 Figure 12 LOAD TRANSIENT RESPONSE Time − 200 µs/div VO = 10 mV/div (ac coupled) VI = 12 V, VO = 3.3 V IO = 3 A, fS = 500 kHz See Figure 24 IO = 1 A/div Figure 13 POWER UP Time − 2 ms/div VO = 2 V/div See Figure 24 VI = 5 V/div V(PWRGD) = 2 V/div |
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