PQ65180QGA06 Datasheet, PDF (5/13 Pages) SynQor Worldwide Headquarters – 100 Watt, No Heatsink, Isolated DC/DC Converter

Performance Curves
Quarter
Brick
48Vin 18Vout 5.6A
95
90
85
80
75
40 Vin
70
48 Vin
75 Vin
65
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for min-
imum, nominal, and maximum input voltage at 25°C.
12
11
10
9
8
7
6
5
4
3
40 Vin
2
48 Vin
1
75 Vin
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Load Current (A)
Figure 3: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25°C.
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
400 LFM (2.0 m/s)
1.5
300 LFM (1.5 m/s)
1.0
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0.5
50 LFM (0.25 m/s)
0.0
0
25
40
55
70
85
Ambient Air Temperature (^oC)
Figure 5: Maximum output power derating curves vs. ambient air tem-
perature for airflow rates of 50 LFM through 400 LFM with air flowing
across the converter from pin 1 to pin 3 (nominal input voltage).
Product # PQ65180QGA06
Phone [phone]
94
93
92
91
90
89
88
0
25 C
40 C
55 C
100
200
300
400
500
Air Flow (LFM)
Figure 2: Efficiency at nominal output voltage and 60% rated power vs.
airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C
(nominal input voltage).
8
7
6
5
25 C
40 C
55 C
4
0
100
200
300
400
500
Air Flow (LFM)
Figure 4: Power dissipation at nominal output voltage and 60% rated
power vs. airflow rate for ambient air temperatures of 25°C, 40°C, and
55°C (nominal input voltage).
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 6: Thermal plot of converter at 6.1 amp load current (110W)
with 55°C air flowing at the rate of 200 LFM. Air is flowing across the
converter sideways from pin 1 to pin 3 (nominal input voltage).
Doc.# 005-2QG581D Rev. B
9/14/04
Page 5