Datasheet

V = 10V
IN_Start
V = 6V
IN_Stop
V
2.5V/Div
OUT
V
2.5V/Div
OUT
PG
5V/Div
I
200mA/Div
IN
V : ramped up/down
0V to 12V, 175mV/ms
2.5V/Div
R = 820k
R = 110k
R = 82k
IN
EN1
EN2
EN2
W
W
W
V = 5.0 V
L = 10 H
C = 2x10 F
Load = 100
OUT
OUT
m
m
W
V
2.5V/Div
OUT
V
2.5V/Div
OUT
PG
5V/Div
I
200mA/Div
IN
V : ramped up/down
0V to 12V, 175mV/ms
2.5V/Div
EN = V
IN
IN
UVLO
UVLO
V tracks V
IN OUT
V = 5.0 V
L = 10 H
C = 2x10 F
Load = 100
OUT
OUT
m
m
W
V = 12V, Hotplug
C = 10 F
additional 22
IN
IN
m
mF
tantalum-polymer input capacitor
type Poscap 20TQC22MYFB
Current into
input capacitors 20A/div
I
IN
V overshoot reduction
to 15V
IN
V = 5.0 V
2V/Div
OUT
V = 12V
C = 10uF ceramic
+ 22uF Poscap
IN
IN
Short
I = 10mA
OUT
I
OUT
1A/Div
Short
V
OUT
Startup
IL
1A/Div
I
200mA/Div
IN
Current into C
IN
L = 10 H
C = 2x 10 F
m
m
OUT
V
= 3.3 V, 50mV/Div
OUT
V = 9V to 12V
I = 100mA
L = 15 H
C = 10 F
IN
OUT
OUT
m
m
V = 12V, Hotplug
C = 10 F ceramic capacitor
IN
IN
m
V overshoot 25V
IN
Current into
input capacitor 20A/div
I
IN
TPS62125
www.ti.com SLVSAQ5C –MARCH 2012–REVISED DECEMBER 2013
Figure 39. Line transient response V
IN
= 9V to 12V Figure 40. V
IN
Hotplug overshoot
Figure 41. V
IN
Hotplug overshoot reduction with Poscap Figure 42. Short circuit and overcurrent protection
Figure 43. Input supply voltage supervisor (SVS), Figure 44. Operation with EN = V
IN
, V
IN
tracks V
OUT
V
OUT
= 5.0V
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