TPS51640A, TPS59640, TPS59641
www.ti.com
SLUSAQ2 –JANUARY 2012
TYPICAL CHARACTERISTICS
1-Phase Configuration, 33-A GPU
0.650
1.250
V
= 0.6 V
V
= 1.23 V
VID
VID
1.225
1.200
1.175
1.150
0.625
0.600
0.575
0.550
Specified Maximum
Specified Maximum
1.125
1.100
1.075
1.050
Specified Minimum
V
V
= 9 V
= 20 V
V
V
= 9 V
= 20 V
0.525
0.500
IN
IN
IN
Specified Minimum
IN
Nominal
Nominal
0
5
10
15
20
25
30
35
0
2
4
6
8
10 12
14
16 18 20
Output Current (A)
Output Current (A)
Figure 37. Output Voltage Vs. Load Current in PS0
Figure 38. Output Voltage Vs. Load Current in PS1
95
90
85
95
90
85
80
75
70
V
= 0.6 V
VID
V
= 1.23 V
VID
80
75
70
65
60
V
= 9 V
V
V
= 9 V
IN
= 20 V
IN
IN
V
= 20 V
IN
55
0
5
10
15
20
25
30
35
0
2
4
6
8
10 12
14
16 18 20
Output Current (A)
Output Current (A)
Figure 39. Efficiency Vs. Load Current in PS0
Figure 40. Efficiency Vs. Load Current in PS1
400
350
300
250
200
150
PS0, V
PS0, V
PS1, V
PS1, V
= 1.23 V, V = 20 V
IN
= 1.23 V, V = 9 V
100
50
VID
VID
VID
VID
IN
= 0.06 V, V = 20 V
IN
= 0.06 V, V = 9 V
R
= 30 kW
GF
IN
0
0
5
10
15
20
25
30
35
Output Current (A)
Figure 41. Frequency Vs. Load Current
Figure 42. Switching Ripple in PS0
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