
CM4 App Note 260424 issue 2.1.docx
Document No. 260424
Page 9 of 29
FORCED AIR PERFORMANCE
No Heatsink, Air Direction X or Y at 2m/s/1.5m/s/1m/s/0.5m/s
FORCED AIR PERFORMANCE WITH HEATSINK
(2)
With Heatsink, Air Direction X or Y at 2m/s/1.5m/s/1m/s/0.5m/s
Airflow definitions
X
Y
Z
Notes
1.
Each 0.5m/s is approximately 100LFM. Eg. 2m/s
≈ 400LFM, 1.5m/s ≈ 300LFM etc.
2.
Standard TDK-Lambda heatsinks type 1 and type 2 used. Type 1 used for airflow direction X. Type 2 used for airflow direction Y.
The ratings provided above are for guidance only and all CM4 configured solutions must be evaluated in the end application to ensure the
conditions set out in the power ratings section are met.
0
50
100
150
200
250
300
350
400
450
500
550
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Po
u
t
Ambient Temperature
S1 120Vin, 4x5Vout
2MS-1
1.5MS-1
1MS-1
0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Po
u
t
Ambient Temperature
S1 220Vin, 4x5Vout
2MS-1
1.5MS-1
1MS-1
0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Po
u
t
Ambient Temperature
S2/S3/S4 120Vin, 4x10/20/40Vout
2MS-1
1.5MS-1
1MS-1
0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Po
u
t
Ambient Temperature
S2/S3/S4 220Vin, 4x10/20/40Vout
2MS-1
1.5MS-1
1MS-1
0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Po
u
t
Ambient Temperature
S1 120Vin, 4x5Vout
2MS-1
1.5MS-1
1MS-1
0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Po
u
t
Ambient Temperature
S1 220Vin, 4x5Vout
2MS-1
1.5MS-1
1MS-1
0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Po
u
t
Ambient Temperature
S2/S3/S4 120Vin, 4x10/20/40Vout
2MS-1
1.5MS-1
1MS-1
0.5MS-1
0
50
100
150
200
250
300
350
400
450
500
550
600
650
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Po
u
t
Ambient Temperature
S2/S3/S4 220Vin, 4x10/20/40Vout
2MS-1
1.5MS-1
1MS-1
0.5MS-1