TPS54360
SLVSBB4C –AUGUST 2012–REVISED OCTOBER 2012
= 5V, fsw = 600 kHz
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100
90
100
90
V
OUT
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
V
= 5V, fsw = 600 kHz
OUT
36Vin
36Vin
48Vin
8Vin
12Vin
8Vin
48Vin
60Vin
12Vin
24Vin
24Vin
60Vin
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0.001
0.01
0.1
1
I
- Output Current - A
I
- Output Current - A
O
O
Figure 46. Efficiency vs Load Current
Figure 47. Light Load Efficiency
100
100
90
V
= 3.3V, fsw = 300 kHz
OUT
90
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
V
= 3.3V, fsw = 300 kHz
OUT
36Vin
48Vin
60Vin
36Vin
48Vin
8Vin
8Vin
12Vin
24Vin
12Vin
24Vin
60Vin
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0.001
0.01
0.1
1
I
- Output Current - A
I - Output Current - A
O
O
Figure 48. Efficiency vs Load Current
Figure 49. Light Load Efficiency
180
1
60
40
V
= 12V, V
= 5V,
OUT
IN
fsw = 600 kHz
0.8
Phase
120
60
0
0.6
0.4
0.2
0
20
Gain
0
-0.2
0.4
-0.6
-0.8
-1
6- 0
-20
V
= 12V,
= 5V,
IN
-120
-180
-40
-60
V
I
OUT
= 3.5A
OUT
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
10
100
1000
10000
100000
1000000
I
- Output Current - A
Frequency - Hz
O
Figure 50. Overall Loop Frequency Response
Figure 51. Regulation vs Load Current
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