Figure 7, Figure 8 – GE Industrial Solutions QRW025 Series User Manual
Page 8
Lineage Power
8
Data Sheet
August 23, 2010
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 QRW025A0M (VO = 1.5 V) module at room temperature
(TA = 25 °C)
Figure 7.
Input Voltage and Current Characteristics.
Figure 8.
Converter Efficiency vs. Output Current.
Figure 9.
Output Ripple Voltage (IO = IO, max).
Tested with a 220µF aluminium and a 1.0µF ceramic capacitor
across the load.
Figure 10. Transient Response to Step Decrease in
Load from 50% to 25% of Full Load (VI = 48
Vdc).
Figure 11. Transient Response to Step Increase in
Load from 50% to 75% of Full Load (VI = 48
Vdc).
Tested with a 10µF aluminium and a 1.0µF tantalum capacitor
across the load.
Figure 12. Start-up from Remote On/Off (IO = IO, max).
0
0.2
0.4
0.6
0.8
1
1.2
1.4
25
35
45
55
65
75
I
O
= 0 A
I
O
= 12.5 A
I
O
= 25 A
INPUT VOLTAGE, V
I
(V)
INPUT CURRENT, I
I
(A)
70
72
74
76
78
80
82
84
86
88
90
0
5
10
15
20
25
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
OUTPUT CURRENT, I
O
(A)
EFFICIENCY
η
(%)
TIME, t (1 µs/div)
OUTPUT V
OL
T
A
GE,
V
O
(V) (20 mV/idv)
75V, 25A
48V, 25A
36V, 25A
TIME, t (50 µs/div)
OUTPUT V
OL
TA
GE
,
V
O
(V) (100 mV/idv
)
OUTPUT CURRENT
,
I
O
(A) (5 A/div)
TIME, t (50 µs/div)
OUTPUT V
OL
TA
GE
,
V
O
(V) (100 mV/idv
)
OUTPUT CURRENT
,
I
O
(A) (5 A/div)
0.