GE Industrial Solutions NQR002A0X4 - Manual (Page 8)

Preliminary Data Sheet
February 28, 2012 NQR002A0X4: Non-Isolated DC-DC Power Modules
3 – 14Vdc input; 0.6Vdc to 5.5Vdc Output; 2A output current
LINEAGE POWER 8
Characteristic Curves
The following figures provide typical characteristics for the NQR002 (1.8V, 2A) at 25 o C.
EF
FICI
EN
C
Y
, η
(%)
O
U
TP
UT
CU
RRE
NT
, Io
(A
)
OUTPUT CURRENT, I
O
(A) AMBIENT TEMPERATURE, T
A
O C
Figure 13. Converter Efficiency versus Output Current.
Figure 14. Derating Output Current versus Ambient
Temperature and Airflow.
O
U
TP
U
T
VOLTAGE
V
O
(V
) (20
m
V
/di
v)
OU
TPU
T
CU
RR
ENT
,
OUT
P
UT
VO
LT
A
G
E
I
O
(A
)
(1
A
d
iv
)
V
O
(V) (1
00mV/
di
v)
TIME, t (2 μs/div) TIME, t (500 μs /div)
Figure 15. Typical output ripple and noise (V
IN
= 12V, I
o
= I
o,max
).
Figure 16. Transient Response to Dynamic Load
Change from 0% to 50% to 0%.
O
U
T
P
UT
VO
LT
AG
E
O
N
/O
F
F
V
O
LT
A
G
E
V
O
(V
)
(500m
V
/d
iv)
V
ON/
O
FF
(V) (
5V/
div
)
O
U
T
P
U
T
VO
LT
AG
E
I
N
PU
T
V
O
LT
A
G
E
V
O
(V
)
(500
m
V
/d
iv
)
V
IN
(
V
) (5V/di
v)
TIME, t (5ms/div) TIME, t (5ms/div)
Figure 17. Typical Start-up Using On/Off Voltage (I
o
=
I
o,max,
V
in=
12V,Cext=22uF
,
).
Figure 18. Typical Start-up Using Input Voltage (V
IN
=
12V, Cext=22uF, I
o
= I
o,max
).
40
50
60
70
80
90
100
0 0.5 1 1.5 2
Vin = 3V
Vin = 14V
Vin = 12V
0.0
0.5
1.0
1.5
2.0
2.5
25 35 45 55 65 75 85
NC