Tyco Electronics Power Systems 7
Data Sheet
August 22, 2006
36 Vdc to 75 Vdc Input; 1.2 Vdc to 5.0 Vdc Output; 10 A to 20 A
QW010/015/020 Series Power Modules: dc-dc Converters;
Characteristic Curves
The following figures provide typical characteristics curves for the QW020A0M1 (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).
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).
Figure 12. Start-up from Remote On/Off (IO = IO, max).
0
0.2
0.4
0.6
0.8
1
30 35 40 45 50 55 60 65 70 7
INPUT VOLTAGE, V
I
(V)
I
I
O
= 20A
I
O
= 10A
I
O
= 0A
70
72
74
76
78
80
82
84
86
0 2 4 6 8 10 12 14 16 18 2
O
EFFICIENCY, (%)
VI = 36V
V
I = 48V
V
I = 75V
OUTPUT VOLTAG
V
O
(V) (200 V/div)
OUTPUT VOLTAG
V
O
(V) (200 mV/div)
OUTPUT CURRENT,
I
O
(A) (5 A/div)
OUTPUT VOLTAG
V
O
(V) (200 mV/div)
OUTPUT CURRENT,
I
O
(A) (5 A/div)
OUTPUT VOLTAG
V
O
(V) (500 mV/div)
REMOTE ON/OFF,
V
ON/OFF
(5 V/div)
