TPS51216
SLUSAB9 –NOVEMBER 2010
www.ti.com
TYPICAL CHARACTERISTICS (continued)
10
8
800
RMODE = 100 kΩ
VVDDQ = 1.20 V
VVDDQ = 1.35 V
VVDDQ = 1.50 V
IVDDQ = 10 A
700
600
500
400
300
200
6
4
2
0
−50
−25
0
25
50
75
100
125
6
8
10
12
14
16
18
20
22
Junction Temperature (°C)
Input Voltage (V)
Figure 7. VTT Discharge Current vs Junction Temperature
Figure 8. Switching Frequency vs Input Voltage
800
800
700
600
500
400
300
200
100
0
RMODE = 200 kΩ
IVDDQ = 10 A
VVDDQ = 1.20 V
VVDDQ = 1.35 V
VVDDQ = 1.50 V
RMODE = 100 kΩ
VIN = 12 V
VVDDQ = 1.20 V
VVDDQ = 1.35 V
VVDDQ = 1.50 V
700
600
500
400
300
200
6
8
10
12
14
16
18
20
22
0
2
4
6
8
10
12
14
16
18
20
Input Voltage (V)
VDDQ Output Current (A)
Figure 9. Switching Frequency vs Input Voltage
Figure 10. Switching Frequency vs Load Current
800
700
600
500
400
300
200
100
0
1.55
1.54
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
1.45
RMODE = 200 kΩ
VIN = 12 V
VVDDQ = 1.20 V
VVDDQ = 1.35 V
VVDDQ = 1.50 V
RMODE = 200 kΩ
VIN = 12 V
0
2
4
6
8
10
12
14
16
18
20
0
2
4
6
8
10
12
14
16
18
20
VDDQ Output Current (A)
VDDQ Output Current (A)
Figure 11. Switching Frequency vs Load Current
Figure 12. Load Regulation
10
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