Datasheet

VIN2(50mV/div)
SW2(5V/div)
V 2 = 1.5 V
O
400 nsec/div)
I 2 = 3 A
O
VIN1(50mV/div)
SW1(5V/div)
V 1 = 3.3 V
O
400 nsec/div)
I 1 = 2 A
O
V (10mV/div)
O
2
SW2(5V/div)
V = 1.5 V
O
2
400 nsec/div)
I 2 = 3A
O
V (10mV/div)
O
1
SW1(5V/div)
V = 3.3 V
O
1
400 nsec/div)
I 1 = 2A
O
0
100
200
300
400
500
600
700
800
900
0.01 0.1 1 10
Output Current (A)
Switching Frequency (kHz)
V
OUT2
= 1.5 V
V
IN1
, V
IN2
= 12 V
G019
TPS542951
SLVSBI4B –JULY 2012–REVISED OCTOBER 2013 www.ti.com
TYPICAL CHARACTERISTICS (continued)
One output is enabled unless otherwise noted. V
IN
= VIN1 or VIN2. V
INx
= 12 V, T
A
= 25°C (unless otherwise noted).
Figure 19. VO2 = 1.5V, SW-frequency vs Figure 20. VO1 = 3.3V, VO1 Ripple Voltage (I
O1
= 2 A)
Output Current (PWP)
Figure 21. VO2 = 1.5V, Ripple Voltage (I
O2
= 3 A) Figure 22. VIN1 Input Voltage Ripple (I
O1
= 2 A)
Figure 23. VIN2 Input Voltage Ripple (I
O2
= 3 A)
12 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated
Product Folder Links: TPS542951