Performance Curves
Brick Dual
48Vin 3.3/2.5Vout 87W
91
90
89
10
9
Quarter
Power Dissipation (W)
Efficiency (%)
8
7
6
5
4
3.3Vo,
2.5Vo,
3.3Vo,
2.5Vo,
3.3Vo,
2.5Vo,
35Vin
35Vin
48Vin
48Vin
75Vin
75Vin
88
87
86
85
84
7
8
9
10
11
12
13
3.3Vo,
2.5Vo,
3.3Vo,
2.5Vo,
3.3Vo,
2.5Vo,
35Vin
35Vin
48Vin
48Vin
75Vin
75Vin
14
15
7
8
9
10
11
12
13
14
15
Load Current (A)
Load Current (A)
Figure 1:
Efficiency vs. output current, from half load to full load on
each output voltage at minimum, nominal, and maximum input voltage
at 25
°
C. Output not under test is held constant at half load.
100
95
Figure 2:
Power dissipation vs. output current, from half load to full
load on each output voltage at minimum, nominal, and maximum input
voltage at 25
°
C. Output not under test is held constant at half load.
13
12
11
Power Dissipation (W)
90
10
9
8
7
6
5
4
3
2
1
0
0
10
20
30
40
50
60
70
80
35 Vin
48 Vin
75 Vin
Efficiency (%)
85
80
75
70
65
60
0
10
20
30
40
50
60
70
80
35 Vin
48 Vin
75 Vin
Total Output Power (W)
Total Output Power (W)
Figure 3:
Overall converter efficiency vs. output power from zero load
to full load at minimum, nominal, and maximum input voltage at 25
°
C.
Both loads are equal and range from zero to full load.
90.0
89.5
Figure 4:
Overall converter power dissipation vs. output power from
zero load to full load at minimum, nominal, and maximum input voltage
at 25
°
C. Both loads are equal and range from zero to full load.
8.0
7.5
Power Dissipation (W)
89.0
7.0
6.5
6.0
5.5
5.0
4.5
4.0
25 C
40 C
55 C
Efficiency (%)
88.5
88.0
87.5
87.0
86.5
86.0
0
50
100
150
200
250
300
350
400
25 C
40 C
55 C
0
50
100
150
200
250
300
350
400
Airflow (LFM)
Airflow (LFM)
Figure 5:
Overall converter efficiency at nominal output voltages and
60% rated power on each output rail vs. airflow rate for ambient tem-
peratures of 25
°
C, 40
°
C and 55
°
C (nominal input voltage).
Product # DQ63325QGL09
Phone 1-888-567-9596
Figure 6:
Overall converter power dissipation at nominal output volt-
ages and 60% rated power on each output rail vs. airflow rate for
ambient temperatures of 25
°
C, 40
°
C and 55
°
C (nominal input voltage).
Doc.# 005-2DQ632D Rev. B
10/7/03
Page 5
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