TPS54560
SLVSBN0 –MARCH 2013
www.ti.com
Measurements are taken with standard EVM using a 12V input, 5V output, and 5A load unless otherwise noted.
I
= 100 mA
I
= 1 A
OUT
EN Floating
OUT
EN Floating
V
V
V
V
IN
IN
OUT
OUT
Time = 40 ms/div
Time = 40 ms/div
Figure 46. Low Dropout Operation
Figure 47. Low Dropout Operation
100
90
80
70
60
50
40
30
20
10
0
100
95
90
85
80
75
70
65
60
VOUT = 5 V, fsw = 400 kHz
VOUT = 5 V, fsw = 400 kHz
VIN = 24 V
7V
12V
VIN = 12 V
VIN = 24VV
VIN = 60VV
VIN = 7 V
VIN = 12 V
12V
Series1
VIN = 7 V
24V
VIN = 36 V
36V
VIN = 48 V
48V
VIN = 36 V
36V
48V
VIN = 48 V
60V
VIN = 60 V
0.001
0.00
0.01
0.10
1.00
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
C024
IO - Output Current (A)
C024
IO - Output Current (A)
Figure 48. Efficiency vs Load Current
Figure 49. Light Load Efficiency
100
100
90
80
70
60
50
40
30
20
10
0
95
90
85
80
75
70
65
60
6V
VIN = 6 V
VIN = 12 V
12V
VIN =2244vV
VIN =3366v V
VOUT = 3.3 V, fsw = 400 kHz
VIN = 12 V
12V
VIN = 24 V
24V
VIN =66VV
VIN = 48 V
48V
VIN = 60 V
60V
VOUT = 3.3 V, fsw = 400 kHz
VIN = 36 V
36V
VIN = 48 V
48V
VIN =6600VV
4.5
0.001
0.00
0
0.5
1
1.5
2
2.5
3
3.5
4
5
0.01
0.10
1.00
C024
C024
IO - Output Current (A)
IO - Output Current (A)
Figure 50. Efficiency vs Load Current
Figure 51. Light Load Efficiency
30
Submit Documentation Feedback
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPS54560
TI [ TEXAS INSTRUMENTS ]
