Datasheet

100 1000 10000 100000 1000000
−60
−40
−20
0
20
40
60
80
100
−135
−90
−45
0
45
90
135
180
225
Frequency (Hz)
Gain (dB)
Phase (°)
Gain
Phase
G001
100 1000 10000 100000 1000000
−60
−40
−20
0
20
40
60
80
100
−135
−90
−45
0
45
90
135
180
225
Frequency (Hz)
Gain (dB)
Phase (°)
Gain
Phase
G001
50
55
60
65
70
75
80
85
90
95
0 1 2 3 4 5 6 7 8 9 10
Output Current (A)
Efficiency (%)
V
IN
= 8 V
V
IN
= 12 V
V
IN
= 15 V
V
OUT
= 1.2 V
G001
50
55
60
65
70
75
80
85
90
95
0 1 2 3 4 5 6 7 8 9 10
Output Current (A)
Efficiency (%)
V
IN
= 8 V
V
IN
= 12 V
V
IN
= 15 V
V
OUT
= 1.8 V
G001
TPS40322
www.ti.com SLUSAF8D –JUNE 2011–REVISED JANUARY 2014
Typical Performance Characteristics
Figure 24. Efficiency vs Load Current (8 V to 15 V Figure 25. Efficiency vs Load Current (8 V to 15 V
to 1.2 V at 10 A, Design Example 1) to 1.8 V at 10 A, Design Example 1)
Figure 26. Design Example 1 Loop Response Figure 27. Design Example 1 Loop Response
V
IN
= 12 V, V
OUT1
= 1.2 V, I
OUT1
= 10 A, 80-kHz V
IN
= 12 V, V
OUT2
= 1.8 V, I
OUT2
= 10 A, 80-kHz
Bandwidth, 50° Phase Margin Bandwidth, 50° Phase Margin
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