GE Industrial Solutions QPW050-060 Series - Manual (Page 5)

Data Sheet
February 2, 2011
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
5
Characteristic Curves
The following figures provide typical characteristics for the QPW050A0F (3.3V, 50A) at 25ºC. The figures are identical
for either positive or negative Remote On/Off logic.
INP
U
T CURRE
NT
, I
i
(A
)
OUT
P
UT
V
O
LT
A
G
E
, O
n/O
ff VO
LT
AG
E
V
O
(V
) (5
V
/di
v)
V
ON/
O
FF
(V
) (
2V
/div
)
INPUT VOLTAGE, V
O
(V) TIME, t (5 ms/div)
Figure 1. Typical Input Characteristic at Room
Temperature. Figure 4. Typical Start-Up Using Remote On/Off,
negative logic version shown.
E
F
F
C
IE
N
C
Y
,
η (%
)
OU
TPU
T
CU
RR
ENT,
OU
T
P
U
T
VO
LT
AG
E
I O
(
A
) (
1
0A
/d
iv
)
V
O
(V
) (
10
0m
V
/d
iv
)
OUTPUT CURRENT, I
O
(A) TIME, t (100 μs/div)
Figure 2. Typical Converter Efficiency Vs. Output
current at Room Temperature. Figure 5. Typical Transient Response to Step
change in Load from 50% to 25% of
Full Load at Room Temperature and 48
Vdc Input.
O
U
TPU
T
VOL
T
AGE
,
V O
(V)
(5
0m
V
/d
iv
)
O
U
TP
U
T
CU
RR
E
N
T
,
O
U
TPU
T
V
O
LT
A
G
E
I O
(A)
(10A
/div)
V
O
(V)
(1
00mV/
d
iv
)
TIME, t (1 s/div) TIME, t (100 μs/div)
Figure 3. Typical Output Ripple and Noise at Room
Temperature and I
o
= I
o, max
.
Figure 6. Typical Transient Response to Step change
in Load from 50% to 75% of Full Load at Room
Temperature and 48 Vdc Input.
36 Vin
48 Vin
75 Vin
0
1
2
3
4
5
6
25 35 45 55 65 75
Io = 0 A
Io = 25 A
Io = 50 A
80
82
84
86
88
90
92
94
0 10 20 30 40 50
Vi = 36 V
Vi = 48 V
Vi = 75 V