Datasheet

V
IN2
= 12 V (50 mV/div)
SW2 (5 V/div)
t - Time - 400 ns/div
V
o2
= 1.5 V (10 mV/div)
SW2 (5 V/div)
t - Time - 400 ns/div
V
IN1
= 12 V (50 mV/div)
SW1 (5 V/div)
t - Time - 400 ns/div
0.01 0.1 1 10
I - Output Current - A
O
0
100
200
300
400
500
600
700
800
f - Switching Frequency - kHz
sw
V = 12 V
I
V
o1
= 3.3 V (10 mV/div)
t - Time - 400 ns/div
SW1 (5 V/div)
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 19. VO2=1.5V, SW-frequency vs Output Current Figure 20. VO1=3.3V, VO1 Ripple Voltage (I
O1
=2A)
Figure 21. VO2=1.5V, Ripple Voltage (I
O2
=2A) Figure 22. VIN1 Input Voltage Ripple (I
O1
=2A)
Figure 23. VIN2 INPUT VOLTAGE RIPPLE (I
O2
=2A)
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