PWB
12.7mm
Measurement point for
ambient temperature
and airflow
Airflow
Airflow
Output side
Input side
25.4mm
76m
m
Top
CHS
CHS
Fig.8.3 Measuring method
CHS-31
DC-DC Converters Bus Converter.Power Module Type
Instruction Manual
Fig.8.7 Load current vs. ambient temperature(CHS80483R3 Vin=48V)
0
5
10
15
20
25
30
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90
1
2
3
1
convection cooling(0.2m/s)
2
1m/s
3
2m/s
Load current[A
]
Ambient temperature[
C
]
Fig.8.6 Load current vs. ambient temperature(CHS604812 Vin=48V)
Fig.8.5 Load current vs. ambient temperature(CHS604805 Vin=48V)
Fig.8.4 Load current vs. ambient temperature(CHS60483R3 Vin=48V)
0
2
4
6
8
10
14
12
18
16
20
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90
1
2
3
1
convection cooling(0.2m/s)
2
1m/s
3
2m/s
Load current[A]
Ambient temperature[
C
]
0
2
4
6
8
10
14
12
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90
1
2
3
1
convection cooling(0.2m/s)
2
1m/s
3
2m/s
Load current[A]
Ambient temperature[
C
]
0
1
2
3
4
5
7
6
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90
1
2
3
1
convection cooling(0.2m/s)
2
1m/s
3
2m/s
Load current[A]
Ambient temperature[
C
]
