Datasheet

www.ti.com
PERFORMANCE GRAPHS
The performance graphs in Figure 13 through Figure 19 are applicable to the circuit in Figure 11 . T
A
= 25 ° C
-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
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
t-Time=200 μs/Div
I A/Div
OUT
=500m
V
OUT
=50mV/Div(ACCoupled)
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=5ms/Div
V =2V/Div
OUT
V =10V/Div
IN
t-Time=5ms/Div
V =2V/Div
OUT
ENA =2V/Div
TPS5420-EP
SLVS717 – DECEMBER 2006
(unless otherwise specified).
Figure 13. Efficiency Figure 14. Output Regulation % Figure 15. Input Regulation %
vs Output Current vs Output Current vs Input Voltage
Figure 16. Input Voltage Ripple Figure 17. Output Voltage Ripple Figure 18. Transient Response, I
O
and PH Node, I
O
= 3 A and PH Node, I
O
= 3 A Step 0.5 to 1.5 A
Figure 19. Startup Waveform, Figure 20. Startup Waveform,
V
IN
and V
OUT
ENA and V
OUT
17
Submit Documentation Feedback