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Product # DQ65033QKA04
Phone 1-888-567-9596
Doc.# 005-2DQ653L Rev. B
11/11/04
Page 6
T
Technical S
echnical Specification
pecification
Input:
Outputs:
Current:
P
Package:
ackage:
35-75V
5.0V & 3.3V
40W
Quarter-brick
3.2
3.225
3.25
3.275
3.3
3.325
3.35
3.375
3.4
12/0
10.5/1
9/2
7.5/3
6/4
4.5/5
3/6
1.5/7
0/8
IOUT1 / IOUT2 (A)
V
OUT1
(V)
4.8
4.85
4.9
4.95
5
5.05
5.1
5.15
5.2
V
OUT2
(V)
3.3V_48Vin
5.0V_48Vin
3.225
3.25
3.275
3.3
3.325
3.35
3.375
9.1/0
7.5/1
6.1/2
4.5/3
3/4
1.5/5
0/6
IOUT1 / IOUT2 (A)
V
OUT1
(V)
4.85
4.90
4.95
5.00
5.05
5.10
5.15
V
OUT2
(V)
3.3V_48Vin
5.0V_48Vin
Figure 7: Load regulation vs. load current with power fixed at full load
(40W) and load currents split as shown between 3.3V and 5.0V outputs,
at nominal input voltage.
Figure 8: Load regulation vs. load current with power fixed at 75%
load (30W) and load currents split as shown between 3.3V and 5.0V
outputs, at nominal input voltage.
Figure 9: Load regulation vs. output power from 10W load to 30W with
75% load on 3.3V output and 25% load on 5.0V output at nominal input
voltage.
Figure 10: . Load regulation vs. output power from 3W load to full load
with 25% load on 3.3V output and 75% load on 5.0V output at nominal
input voltage.
3.25
3.275
3.3
3.325
3.35
10
15
20
25
30
Total Output Power (W)
V
OUT1
(V)
4.9
4.95
5
5.05
5.1
V
OUT2
(V)
3.3V_48Vin
5.0V_48Vin
Figure 11: Maximum output power-derating curves vs. ambient air tem-
perature for airflow rates of 0 to 400 LFM, air flowing from pin 3 to pin
1. Full load (12.1A) on 3.3V output and no load on 5.0V output.
3.2
3.225
3.25
3.275
3.3
3.325
3.35
3.375
3.4
3
7
10
13
17
20
23
27
30
33
37
40
Total Output Power (W)
V
OUT1
(V)
4.8
4.85
4.9
4.95
5
5.05
5.1
5.15
5.2
V
OUT2
(V)
3.3V_48Vin
5.0V_48Vin
Figure 12: Thermal plot of converter at 12.1 amp load on 3.3V ouput
and no load on 5.0V output with 55°C air flowing at 200 LFM. Air flow
across the converter is from pin 3 to pin 1 (nominal input voltage)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
0
2540
5570
85
Ambient Air Temperature (oC)
Iout
(A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0 LFM (0 m/s)
Semiconductor junction temperature is
within 1
°C of surface temperature
Input voltage effects cross regu-
lation by maximum of 1mV
Input voltage effects cross regu-
lation by maximum of 1mV
Input voltage effects cross regu-
lation by maximum of 1mV
Input voltage effects cross regu-
lation by maximum of 1mV