Datasheet
1.15
1.16
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
1.25
6 8 10 12 14 16 18 20 22
V
IN
– Input Voltage – V
V
OUT
– Output Voltage – V
I
OUT
= 20 A
I
OUT
= 0 A
V
OUT
= 1.2 V
6 8 10 12 14 16 18 20 22
V
IN
– Input Voltage – V
0.85
0.86
0.87
0.88
0.89
0.90
0.91
0.92
0.93
0.94
0.95
I
OUT
= 20 A
V
OUT
– Output Voltage – V
I
OUT
= 0 A
V
OUT
= 0.9 V
V (50 mV/div)
OUT
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V = 20 V,
I = 1 A-15 A(3A/ s)
IN
OUT
m
t - Time - 100 s/divm
I (10 A/div)
IND
I (10 A/div)
OUT
Performance and Typical Characteristic Curves
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6.3 Line Regulation
Figure 8. Line Regulation at 0.9-V Output Figure 9. Line Regulation at 1.2-V Output
6.4 Transient Response
Figure 10. Load Transient 0.9-V Output
10
Using the TPS51217EVM-533, High-Performance, Single-Synchronous SLUU420–MAY 2010
Step-Down Controller for Notebook Power Supply
Copyright © 2010, Texas Instruments Incorporated