Figure 25, Figure 26, Lineage power 17 – GE Industrial Solutions QRW025 Series User Manual
Page 17: Input voltage and current characteristics
Lineage Power
17
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 QRW025A0F (VO = 3.3 V) module at room temperature (TA =
25 °C)
Figure 25.
Input Voltage and Current Characteristics.
Figure 26.
Converter Efficiency vs. Output Current.
Figure 27. Output Ripple Voltage (IO = IO, max).
Tested with a 220µF aluminium and a 1.0µF ceramic capacitor
across the load.
Figure 28. Transient Response to Step Decrease in
Load from 50% to 25% of Full Load
(VI = 48 Vdc).
Figure 29. 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 30. Start-up from Remote On/Off (IO = IO, max).
0
0.5
1
1.5
2
2.5
3
3.5
0
10
20
30
40
50
60
70
IN P U T VOLTAG E, V
I
(V)
IN
PUT
CU
RRENT
, I
I
(A
)
I
O
= 25 A
I
O
= 12.5 A
I
O
= 2.5 A
70
75
80
85
90
95
0
5
10
15
20
25
30
OUTPUT CURRENT, I
O
(A)
EF
FI
CE
NC
Y,
η
(%
)
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
TIME, t (2µs/div)
OUTPUT V
OL
TA
GE, V
O
(V)
(50 mV/div)
36V, 25A
48V, 25A
75V, 25A
TIME, t (2 ms/div)
OUTPUT V
OL
TA
GE
(V)
(1 V/div)
REMO
TE ON/OFF
V
ON/OFF
(V)