Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Characteristic Curves
The following figures provide typical characteristics for QPW025A0F41/QPW025A0F41-H at 25
O
C
OUTPUT VOLTAGE
3
2.5
INPUT CURRENT,(A)
2
Io = 25.0A
1.5
1
0.5
Io = 0.0A
0
30
40
50
60
INPUT VOLTAGE, V
IN
(V)
70
Io = 12.5A
O
N/OFF VOLTAGE
V
On/Off
(V) (5V/div)
V
o
(V) (1V/div)
TIME, t (2 ms/div)
Figure 1. Typical Start-Up (Input Current)
characteristics at room temperature.
95
90
Figure 4. Typical Start-Up Characteristics from Remote
ON/OFF.
OUTPUT CURRENT OUTPUT VOLTAGE
V
O,
(V) (200mV/div)
I
O
(A) (5A/div)
EFFICIENCY (%)
Vin = 48V
85
Vin = 36V
80
75
70
0
5
10
15
20
Vin = 75V
25
OUTPUT CURRENT, I
o
(A)
TIME, t (100μs/div)
Figure 2. Converter Efficiency Vs Load at V
o
= 3.3 V.
Figure 5. Transient Response to Dynamic Load Change
from 50% to 25% to 50% of full load current.
OUTPUT VOLTAGE
V
O
(V) (200mV/div)
OUTPUT VOLTAGE
V
O
(V) (20mV/div)
TIME, t (2μs/div)
OUTPUT CURRENT
I
O
(A) (5A/div)
TIME, t (100μs/div)
Figure 3. Typical Output Ripple and Noise at Vin
=48Vdc.
Figure 6. Transient Response to Dynamic Load Change
from 75% to 50 % to 75% of full load current.
LINEAGE
POWER
5
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
