Input:
Outputs:
Current:
Package:
35-75V
5.0V & 3.3V
40W
Quarter-brick
Technical Specification
100
95
90
85
80
75
70
65
60
5
4
3
2
1
0
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
0
4
8
12
16
20
24
28
32
36
40
0
4
8
12
16
20
24
28
32
36
40
Total Output Power (W)
Total Output Power (W)
Figure 1: Efficiency vs. output power, from 0 load to full load with 50%
Figure 2: Power dissipation vs. output power, from 0 load to full load
load on 3.3V output and 50% load on 5.0V output at minimum, nominal,
with 50% load on 3.3V output and 50% load on 5.0V output at mini-
and maximum input voltage at 25
°C.
mum, nominal, and maximum input voltage at 25°C.
100
95
90
85
80
75
70
65
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
7.3/0
5.8/1
4.4/1.9
2.9/2.9
1.5/3.9
0/4.8
7.3/0
5.8/1
4.4/1.9
2.9/2.9
1.5/3.9
0/4.8
Load Current (A), 3.3Vout/5.0Vout
Load Current (A), 3.3Vout/5.0Vout
Figure 3: Efficiency vs. load current, with total output power fixed at
Figure 4: Power dissipation vs. load current, with total output power
100% load (40W) and load currents split as shown between 3.3V and
fixed at 100% load (40W) and load currents split as shown between 3.3V
5.0V outputs at minimum, nominal, and maximum input voltage at 25
°
C.
and 5.0V outputs at minimum, nominal, and max input voltage at 25°C.
93
92
91
90
89
5
4
3
2
25 C
40 C
55 C
25 C
40 C
55 C
1
0
88
87
0
100
200
300
400
500
0
100
200
300
400
500
Air Flow (LFM)
Air Flow (LFM)
Figure 5: Efficiency at 100% load and 50/50 voltage split (6.1A load on
Figure 6: Power dissipation at 100% load and 50/50 voltage split (6.1A
3.3V and 4A load on 5.0V) versus airflow rate for ambient air tempera-
load on 3.3V and 4A load on 5.0V) versus airflow rate for ambient air
tures of 25
°C, 40
°C.and 55
°
C.(nominal input voltage).
temperatures of 25
°
C, 40
°C.and 55
°
C.(nominal input voltage).
Product # DQ65033QKA04
Phone 1-888-567-9596
Doc.# 005-2DQ653L Rev. B
11/11/04
Page 5
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