TPS51640A, TPS59640, TPS59641
www.ti.com
SLUSAQ2 –JANUARY 2012
TYPICAL CHARACTERISTICS
3-Phase Configuration, 94-A CPU
0.700
V
= 1.05 V
V
= 0.6 V
VID
VID
0.675
0.650
0.625
0.600
1.05
1.00
0.95
Specified Maximum
Specified Maximum
0.575
0.550
0.90
0.85
V
V
= 9 V
V
V
= 9 V
IN
Specified Minimum
IN
Specified Minimum
= 20 V
0.525
0.500
= 20 V
IN
IN
Nominal
Nominal
0.80
0
10 20
30
40 50 60
Output Current (A)
70
80 90 100
0
2
4
6
8
10 12
14
16 18 20
Output Current (A)
Figure 1. Output Voltage vs. Load Current in PS0
Figure 2. Output Voltage vs. Load Current in PS1
95
90
85
V
= 0.6 V
V
= 1.05 V
VID
VID
90
85
80
75
80
75
70
65
70
65
V
V
= 9 V
V
V
= 9 V
IN
IN
= 20 V
= 20 V
IN
IN
0
2
4
6
8
10 12
14
16 18 20
0
10 20
30
40 50 60
70
80 90 100
Output Current (A)
Output Current (A)
Figure 3. Efficiency vs. Load Current in PS0
Figure 4. Efficiency vs. Load Current in PS1
400
350
300
250
R
= 24 kW
CF
200
150
PS0, V
PS0, V
PS1, V
PS1, V
= 1.05 V, V = 20 V
IN
= 1.05 V, V = 9 V
100
50
VID
VID
VID
VID
IN
= 1.05 V, V = 20 V
IN
= 1.05 V, V = 9 V
IN
0
0
10 20
30
40 50 60
70
80 90 100
Output Current (A)
Figure 5. Frequency vs Load-Current (PS0 and PS1)
Figure 6. Switching Ripple in PS0, VIN = 20 V
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