Datasheet

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
I -LoadCurrent- A
LOAD
8V
12V
14V
60
65
70
75
80
85
90
95
100
η -Efficiency-%
60
65
70
75
80
85
90
0 0.5 1 1.5 2 2.5 3
η -Efficiency-%
I -LoadCurrent- A
LOAD
8V
12V
14V
1.188
1.194
1.2
1.206
1.212
V -OutputVoltage-V
O
3.25
3.27
3.29
3.31
3.33
3.35
V -OutputVoltage-V
O
8V
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
I -LoadCurrent- A
LOAD
0 0.5 1 1.5 2 3
I -LoadCurrent- A
LOAD
14V
12V
2.5
12V
14V
8V
www.ti.com TPS54291EVM-431 Typical Performance Data and Characteristic Curves
5.1 Efficiency
V
IN
= 9.6-13.2V, V
OUT1
= 3.3V I
OUT1
= 0-1.5A, V
OUT2
= 1.2V I
OUT2
= 0-2.5A
Figure 5. TPS54291EVM-431 Efficiency vs Load Current
5.2 Line and Load Regulation
V
IN
= 9.6-13.2V, V
OUT1
= 3.2V I
OUT1
= 0-1.5A, V
OUT2
= 1.2V I
OUT2
= 0-2.5A
Figure 6. TPS54291EVM-431 Output Voltage vs Load Current
11
SLVU356–January 2010 Using the TPS54291EVM-431 A 12V Input, 3.3V 1.5A and 1.2V 2.5A
Synchronous Buck Converter
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