GE Industrial Solutions QRW025 Series - Manual (Page 14)

Lineage Power 14
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 QRW025A0G (VO = 2.5 V) module at room temperature (TA
= 25 °C)
Figure 19. Input Voltage and Current Characteristics.
Figure 20. Converter Efficiency vs. Output Current.
Figure 21. Output Ripple Voltage (IO = IO, max).
Tested with a 220µF aluminium and a 1.0µF ceramic capacitor
across the load.
Figure 22. Transient Response to Step Decrease in
Load from 50% to 25% of Full Load
(VI = 48 Vdc).
Figure 23. 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 24. Start-up from Remote On/Off (IO = IO, max).
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
25 35 45 55 65 75
INPUT VOLTAGE, V I (V)
INPUT CURRENT, I
I (A)
I O = 25 A
I O = 12.5 A
I O = 0 A
70
75
80
85
90
95
0 5 10 15 20 25
OUTPUT CURRENT, I O (A)
EFFICIENCY
η (%)
V I = 36 V
V I = 48 V
V I = 75 V
TIME, t (1 µs/div)
OUTPUT VOLTAGE, V
O
(V)
(50 mV/div)
TIME, t (100 µs/div)
OUTPUT CURRENT, I
O
(A)
(5 A/div)
OUTPUT VOLTAGE, V
O
(
V)
(100 mV/div)
TIME, t (100 µs/div) OUTPUT CURRENT, I
O
(A)
(5 A/div)
OUTPUT VOLTAGE, V
O
(
V)
(100 mV/div)
TIME, t (1 ms/div)
REMOTE ON/OFF,
Von/off (V)
OUTPUT VOLTAGE, V
O
(V)
(1 V/div)