Characteristic curves, Figure 1, Figure 2 – GE Industrial Solutions QRW025 Series User Manual
Page 5: Figure 6
Lineage Power
5
Data Sheet
March 27, 2008
36 Vdc - 75 Vdc Input, 1.2 to 3.3 Vdc Output; 25A
QRW025 Series Power Modules; dc-dc Converters
Characteristic Curves
The following figures provide typical characteristics curves for the QRW025A0P (VO = 1.2 V) module at room temperature (TA
= 25 °C).The figures are identical for both on/off configurations.
Figure 1.
Input Voltage and Current Characteristics.
Figure 2.
Converter Efficiency vs. Output Current.
Figure 3.
Output Ripple Voltage (IO = IO, max).
Tested with a 220µF aluminium and a 1.0µF ceramic
capacitor across the load.
Figure 4.
Transient Response to Step decrease in
Load from 50% to 25% of Full Load (VI = 48
Vdc).
Figure 5.
Transient Response to Step Increase in Load
from 50% to 75% of Full Load (VI = 48 Vdc).
Figure 6.
Start-up from Remote On/Off (IO = IO, max).
INPUT VOLTAGE, V
I
(V)
0
10
20
30
40
50
60
70
80
0.2
0.4
0.6
0.8
1
1.2
0
INPUT CURRENT
, I
I
(A)
I
O
= 25A
I
O
= 12.5A
I
O
= 2.5A
0
5
10
15
20
25
30
100
90
80
70
60
50
40
30
20
10
0
OUTPUT CURRENT, I
O
(A)
EFFICIENCY
,
η
(%)
V
I
= 75V
V
I
= 48V
V
I
= 36V
TIME, t (1 µs/div)
OUTPUT V
OL
T
A
GE, V
O
(V)
(20 mV/div)
36V, 25A
48V, 25A
75V, 25A
TIME, t, (.2 µs/div)
OUTPUT CURRENT
, I
O
(A)
(5 A/div)
OUTPUT V
OL
TA
GE, V
O
(
V)
(50 mV/div)
TIME, t, (.2 µs/div)
OUTPUT CURRENT
, I
O
(A)
(5 A/div)
OUTPUT V
OL
TA
GE, V
O
(V
)
(50 mV/div)
0.
5