Data Sheet
March 27, 2008
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Characteristic Curves
The following figures provide typical characteristics for the QPW060A0G (2.5V, 60A) at 25ºC. The figures are
identical for either positive or negative Remote On/Off logic.
OUTPUT VOLTAGE, On/Off VOLTAGE
INPUT CURRENT, I
i
(A)
5
4
3
2
1
0
25
35
Io = 60A
Io = 30 A
Io = 0 A
45
55
65
75
INPUT VOLTAGE, V
O
(V)
V
O
(V) (5V/div)
V
ON/OFF
(V) (1V/div)
6
TIME, t (2.5 ms/div)
Figure 7. Typical Input Characteristic at Room
Temperature.
94
92
EFFCIENCY,
η
(%)
Figure 10. Typical Start-Up Using Remote On/Off,
negative logic version shown.
OUTPUT CURRENT, OUTPUT VOLTAGE
90
88
86
84
5
Vi = 36 V
Vi = 48 V
Vi = 75 V
10 15 20 25 30 35 40 45 50 55 60
OUTPUT CURRENT, I
O
(A)
I
O
(A) (10A/div)
V
O
(V) (50mV/div)
TIME, t (500
μs/div)
Figure 8. Typical Converter Efficiency Vs. Output
current at Room Temperature.
Figure 11. Typical Transient Response to Step
change in Load from 50% to 25%of Full Load at
Room Temperature and 48 Vdc Input.
OUTPUT CURRENT, OUTPUT VOLTAGE
V
O
(V) (50mV/div)
I
O
(A) (10A/div)
OUTPUT VOLTAGE,
75 Vin
V
O
(V) (50mV/div)
48 Vin
36 Vin
TIME, t (2.5μs/div)
TIME, t (500
μs/div)
Figure 9. Typical Output Ripple and Noise at Room
Temperature and I
o
= I
o, max
.
Figure 12. Typical Transient Response to Step change
in Load from 50% to 75% of Full Load at Room
Temperature and 48 Vdc Input.
LINEAGE
POWER
7
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
