Datasheet

PH=5V/Div
V =100mV/Div(ACCoupled)
IN
t -Time-1 s/Divm
PH=5V/Div
V =20mV/Div(ACCoupled)
OUT
t -Time-1 s/Divm
t-Time=200 μs/Div
I A/Div
OUT
=500m
V
OUT
=50mV/Div(ACCoupled)
75
80
85
90
95
100
0 0.5 1 1.5 2 2.5 3
I -OutputCurrent- A
O
Efficiency-%
V =15V
I
V =12V
I
V =18V
I
V =19.8V
I
V =10.8V
I
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0 0.5 1 1.5
2
2.5 3
I -OutputCurrent- A
O
OutputRegulation-%
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0 0.5 1 1.5
2
2.5 3
V -InputVoltage-V
I
OutputRegulation-%
I = 0 A
O
I =1 A
O
I =2 A
O
TPS5420
SLVS642E –APRIL 2006–REVISED SEPTEMBER 2013 www.ti.com
PERFORMANCE GRAPHS
The performance graphs in Figure 14 - Figure 20 are applicable to the circuit in Figure 11. T
A
= 25°C. unless
otherwise specified.
Figure 14. Efficiency vs. Output Figure 15. Output Regulation % Figure 16. Input Regulation % vs.
Current vs. Output Current Input Voltage
Figure 17. Input Voltage Ripple Figure 18. Output Voltage Ripple Figure 19. Transient Response,
and PH Node, I
O
= 3 A and PH Node, I
O
= 3 A Io Step 0.5 to 1.5 A
18 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: TPS5420