PQ60120EML04 Datasheet, PDF (5/14 Pages) SynQor Worldwide Headquarters – Eighth-brick DC/DC Converter

Technical Specification
Input: 35-75 V
Output: 12 V
Current: 4 A
Package: Eighth-brick
95
90
85
80
75
70
35 Vin
65
48 Vin
75 Vin
60
0.0 0.4 0.8 1.3 1.7 2.1 2.5 2.9 3.3 3.8 4.2
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for min-
imum, nominal, and maximum input voltage at 25°C.
92.0
91.5
91.0
90.5
90.0
89.5
89.0
88.5
88.0
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).
7
6
5
4
3
2
35 Vin
1
48 Vin
75 Vin
0
0.0 0.4 0.8 1.3 1.7 2.1 2.5 2.9 3.3 3.8 4.2
Load Current (A)
Figure 3: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25°C.
5.0
4.5
4.0
3.5
3.0
2.5
2.0
0
25 C
40 C
55 C
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).
4.5
4.0
3.5
3.0
2.5
2.0
1.5
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
1.0
200 LFM (1.0 m/s)
0.5
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
0.0
0
25
40
55
70
85
Ambient Air Temperature (^oC)
Semiconductor junction temperature is
within 1°C of surface temperature
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 3 to pin 1 (nominal input voltage).
Figure 6: Thermal plot of converter at 4.2 amp load current (50W) with
55°C air flowing at the rate of 200 LFM. Air is flowing across the con-
verter from pin 3 to pin 1 (nominal input voltage).
Product # PQ60120EML04
Phone [phone]
www.synqor.com
Doc.# 005-2EM612E Rev. C
04/25/06
Page 5