Datasheet

1
10
100
1000
0.01 0.1 1 10 100
Output Current (A)
Switching Frequency (kHz)
FCCM
Skip Mode
f
SET
= 750 kHz
V
IN
= 12 V
V
OUT
= 1.1 V
1
10
100
1000
0.01 0.1 1 10 100
Output Current (A)
Switching Frequency (kHz)
FCCM
Skip Mode
f
SET
= 1 MHz
V
IN
= 12 V
V
OUT
= 1.1 V
−200
0
200
400
600
800
1000
1200
0 1 2 3 4 5 6
Output Voltage (V)
Switching Frequency (kHz)
f
SW
= 300 kHz
f
SW
= 500 kHz
f
SW
= 750 kHz
f
SW
= 1 MHz
I
OUT
=10 A
V
IN
= 12 V
1.080
1.085
1.090
1.095
1.100
1.105
1.110
1.115
1.120
0 2 4 6 8 10 12
Output Current (A)
Output Voltage (V)
Skip Mode
FCCM
1.090
1.092
1.094
1.096
1.098
1.100
1.102
1.104
1.106
1.108
1.110
5 6 7 8 9 10 11 12 13 14 15
Input Voltage (V)
Output Voltage (V)
FCCM, No Load
Skip Mode, No Load
FCCM and Skip Mode, I
OUT
= 10 A
f
SW
= 500 kHz
V
IN
= 12 V
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100
Output Current (A)
Efficiency (%)
Skip Mode, f
SW
= 500 kHz
FCCM, f
SW
= 500 kHz
Skip Mode, f
SW
= 300 kHz
FCCM, f
SW
= 300 kHz
V
IN
= 12 V
V
OUT
= 1.1 V
TPS53315
SLUSAE6 –DECEMBER 2010 www.ti.com
TYPICAL CHARACTERISTICS
Inductor Values
IN06155: 1 µH, 2.3 mΩ, HCB1175-501: 0.5 µH, 0.29 mΩ
Figure 7. Frequency vs. Temperature (f
SET
= 750 kHz) Figure 8. Frequency vs. Temperature (f
SET
= 1 MHz)
Figure 9. Switching Frequency vs. Output Voltage Figure 10. Output Voltage vs. Output Current
Figure 11. Output Voltage vs. Input Voltage Figure 12. Efficiency vs. Output Current, Inductor: IN06155
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