TPS56C231
ZHCSNT8 –AUGUST 2022
www.ti.com.cn
6.6 典型特性(continued)
TJ = –40°C 至125°C，VIN = 12V（除非另有说明）
100
90
80
70
60
50
100
95
90
85
80
75
70
65
60
55
50
40
VIN=12V, VOUT=1.2V, 800kHz
VIN=12V, VOUT=3.3V, 800kHz
VIN=12V, VOUT=5V, 800kHz
VIN=12V, VOUT=1.2V, 800kHz
VIN=12V, VOUT=3.3V, 800kHz
VIN=12V, VOUT=5V, 800kHz
30
20
0.001
0.01
0.1
1
10 20
0
1
2
3
4
5
6
7
8
9
10 11 12
Output Current (A)
Output Current (A)
图6-19. 效率，DCM 模式，fSW = 800kHz
图6-20. 效率，FCCM 模式，fSW = 800kHz
100
90
80
70
60
50
40
30
20
100
95
90
85
80
75
70
65
60
55
50
VIN=12V, VOUT=1.2V, 1200kHz
VIN=12V, VOUT=3.3V, 1200kHz
VIN=12V, VOUT=5V, 1200kHz
VIN=12V, VOUT=1.2V, 1200kHz
VIN=12V, VOUT=3.3V, 1200kHz
VIN=12V, VOUT=5V, 1200kHz
0.001
0.01
0.1
Output Current (A)
1
10 20
0
1
2
3
4
5
6
7
8
9
10 11 12
Output Current (A)
图6-21. 效率，DCM 模式，fSW = 1200kHz
图6-22. 效率，FCCM 模式，fSW = 1200kHz
100
90
80
70
60
50
40
30
20
10
1.208
1.206
1.204
1.202
1.2
Ext-5VCC, VIN=5V, VOUT=1.2V, 800kHz
Ext-5VCC, VIN=12V, VOUT=1.2V, 800kHz
Internal 5VCC, VIN=5V, VOUT=1.2V, 800kHz
Internal 5VCC, VIN=12V, VOUT=1.2V, 800kHz
1.198
1.196
VIN=5V, VOUT=1.2V
VIN=12V, VOUT=1.2V
0
1
2
3
4
5
6
7
8
9
10 11 12
0.001
0.01
0.1
1
10 20
Output Current (A)
Output Current (A)
图6-24. 负载调节，fSW = 800kHz
图6-23. 效率，外部VCC 与内部VCC，DCM 模式，fSW = 800kHz
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