TPS56528
SLVSBV3A –APRIL 2013–REVISED APRIL 2013
www.ti.com
TYPICAL CHARACTERISTICS (continued)
VIN = 12 V, (unless otherwise noted).
100
90
80
70
60
50
40
EN( 10V/div)
VREG5( 5V/div)
Vout( 0.5V/div)
V
= 1.8 V
o=1.8V
= 5.0 V
= 3.3 V
O
PG( 5V/div)
V
VOo = 5 V
V
VOo=3.3V
0.0
1.0
2.0
3.0
4.0
5.0
400us/div
C008
IOUT - Output Current (A)
Figure 7. START-UP WAVE FORM
Figure 8. EFFICIENCY vs OUTPUT CURRENT
100
90
80
70
60
50
40
900
850
800
750
700
650
600
550
500
450
400
VVo=11..0055VV
O
V
= 1.2 V
Vo 1.2V
O
V
= 1.5 V
Vo 1.5V
O
V
= 1.8 V
Vo 1.8V
O
V
= 2.5 V
Vo=2.5V
O
V
= 3.3 V
Vo=3.3V
O
V
= 5 V
Vo=5V
O
V
= 1.8 V
o=1.8V
= 5.0 V
= 3.3 V
O
V
VOo = 5 V
IO = 1A
V
VOo=3.3V
0.001
0.01
0.1
0.0
5.0
10.0
15.0
20.0
C009
C011
IOUT - Output Current (A)
VIN - Input Voltage (V)
Figure 9. LIGHT LOAD EFFICIENCY vs OUTPUT CURRENT
Figure 10. SWITCHING FREQUENCY vs INPUT VOLTAGE
800
0.615
0.610
0.605
0.600
0.595
0.590
VIN = 12 V
700
600
500
400
300
200
VVIN==15.V05 V
O
100
0
V
= 1.8 V
VIN=12V
O
Iout = 1 A
V
= 3.3 V
VIN=18V
O
0.585
0
1
2
3
4
5
-50
0
50
100
150
C012
IOUT - Output Current (A)
C015
TJ - Junction Temperature - °C
Figure 11. SWITCHING FREQUENCY vs OUTPUT CURRENT
Figure 12. VFB VOLTAGE vs JUNCTION TEMPERATURE
10
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links :TPS56528
TI [ TEXAS INSTRUMENTS ]
