TPS65276_15 Datasheet, PDF (14/33 Pages) Texas Instruments – 4.5-V TO 18-V INPUT VOLTAGE, 6-A/3.5-A DUAL SYNCHRONOUS STEP-DOWN CONVERTER

TPS65276
SLVSC83A – AUGUST 2013 – REVISED DECEMBER 2013
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TYPICAL CHARACTERISTICS (continued)
T_A = 25°C, V_IN = 12 V, f_SW = 625 kHz (unless otherwise noted)
0.82
1.82
0.81
1.81
0.8
1.8
0.79
1.79
0.78
1.78
0.77
forced PWM 0 A
0.76
forced PWM 4.5 A
auto PSM-PWM 0 A
0.75
6 7 8 9 10 11 12 13 14 15 16 17 18
V_IN (V)
C015
Figure 15. 0.8-V Line Regulation
V_OUT = 0.8 V
1.77
forced PWM 0 A
1.76
forced PWM 4.5 A
auto PSM-PWM 0 A
1.75
6 7 8 9 10 11 12 13 14 15 16 17 18
V_IN (V)
C016
Figure 16. 1.8-V Line Regulation
V_OUT = 1.8 V
3.29
3.27
3.25
3.23
3.21
3.19
forced PWM 0 A
3.17
forced PWM 4.5 A
auto PSM-PWM 0 A
3.15
6 7 8 9 10 11 12 13 14 15 16 17 18
V_IN (V)
C017
Figure 17. 3.3-V Line Regulation
V_OUT = 3.3 V
4.93
4.91
4.89
4.87
4.85
4.83
4.81
forced PWM 0 A
4.79
forced PWM 4.5 A
auto PSM-PWM 0 A
4.77
6 7 8 9 10 11 12 13 14 15 16 17 18
V_IN (V)
C018
Figure 18. 5-V Line Regulation
V_OUT = 5 V
Figure 19. Output Ripple at 0 A, Forced PWM
Figure 20. Output Ripple at 3.5 A, Forced PWM
14
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