Datasheet

t - Time - 400 s/divm
En2 (10 V/div)
V (0.5 V/div)
O2
PG2 (5 V/div)
0 0.5 1 1.5 2
I - Output Current - A
O
40
50
60
70
80
90
100
Efficiency - %
V = 12 V
I
V = 5 V
I
V = 18 V
I
V
o2
(50 mV/div)
I (1 A/div)
O2
t - Time - 100 s/divm
V (1 V/div)
O1
EN1 (10 V/div)
PG1 (5 V/div)
t - Time - 400 s/divm
V
o1
(50 mV/div)
t - Time - 100 s/divm
I (1 A/div)
O1
1.45
1.46
1.47
1.48
1.49
1.5
1.51
1.52
1.53
1.54
1.55
V - Output Voltage - V
O
0 2 4 6 8 10 12 14 16 18 20
V - Input Voltage - V
I
I = 1 A
o2
I = 10m A
o2
TPS54294
SLVSB00D –OCTOBER 2011–REVISED SEPTEMBER 2013 www.ti.com
TYPICAL CHARACTERISTICS
One output is enabled unless otherwise noted. VI = VIN1 or VIN2.
VIN = 12 V, T
A
= 25°C (unless otherwise noted).
Figure 7. VO2=1.5V Output Voltage vs Input Voltage Figure 8. VO1=3.3V, 0A to 2A Load Transient Response
Figure 9. VO2=1.5V, 0A to 2A Load Transient Response Figure 10. VO1=3.3V, SoftStart and Powergood
Figure 11. VO2=1.5V, SoftStart and Power Good Figure 12. VO1=3.3V, Efficiency vs Output Current
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