Datasheet

VIN2(50mV/div)
SW2(5V/div)
V = 1.5 V
O
VIN1(50mV/div)
SW1(5V/div)
V = 3.3 V
O
V 2(10mV/div)O
SW2(5V/div)
V = 1.5 V
O
0
100
200
300
400
500
600
700
800
fsw - Switching Frequency - kHz
0.01 0.1 1 10
I - Output Current - A
O
V = 12 V
IN
V 1(10mV/div)
O
SW1(5V/div)
V = 3.3 V
O
TPS54394
SLVSBE6B –JUNE 2012–REVISED AUGUST 2013 www.ti.com
TYPICAL CHARACTERISTICS (continued)
One output is enabled unless otherwise noted. V
I
= 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
= 3A)
Figure 21. VO2=1.5V, Ripple Voltage (I
O2
= 3A) Figure 22. VIN1 Input Voltage Ripple (I
O1
= 3A)
Figure 23. VIN2 Input Voltage Ripple (I
O2
= 3A)
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