PQ60120SMX04 Datasheet, PDF (7/15 Pages) SynQor Worldwide Headquarters – Fixed frequency switching provides predictable EMI

Technical Specification
Input: 48V
Output: 12V
Current: 4A
100
95
90
85
80
75
70
65
60
0
1
2
3
Load Current (A)
35 Vin
48 Vin
75 Vin
4
Figure 1: Efficiency at nominal output voltage vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
89
88
87
86
85
25º C
40º C
84
55º C
83
100
200
300
400
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).
10
8
6
4
2
35 Vin
48 Vin
75 Vin
0
0
1
2
3
4
Load Current (A)
Figure 3: Power dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25°C.
7
6
5
4
3
25º C
2
40º C
55º C
1
100
200
300
400
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).
6
5
4
3
2
400LFM(2.0m/s)
300LFM(1.5m/s)
1
200LFM(1.0m/s)
100LFM(0.5 m/S)
0
25
40
55
70
85
Ambient Air Temperature(°C)
Figure 5: Maximum output power derating curves vs. ambient air temperature
for airflow rates of 100 LFM through 400 LFM with air flowing from pin 3 to
pin 1 (nominal input voltage).
Figure 6: Thermal plot of converter at 4.0 amp load current (48W) with
55°C air flowing at the rate of 200 LFM. Air is flowing from pin 3 to pin 1
(nominal input voltage).
Product # PQ60120SMx04
Phone [phone]
www.synqor.com
Doc.# 005-0005169 Rev. D
11/13/15
Page 7