■
Fig.4.5.5 ~ 4.5.13 show the derating curve in the condition that is measured
as shown in Fig.4.5.4.
Verify final design by actual temperature measurement.
The temperature measurement location as shown in Fig.4.5.2 and Fig.4.5.3
must keep below 120
℃
.
Fig. 4.5.4
Measuring method
Fig. 4.5.5
Derating curve
for BRNS6
at 12Vin 1.2Vout
Fig. 4.5.6
Derating curve
for BRNS6
at 12Vin 3.3Vout
BRNS 4-10
12.7mm
7
6
m
m
25.4mm
BRNS20
PWB
Measurement point for
ambient temperature
and airflow
Airflow
Airflow
BRNS6/12
Airflow
A
B
0
4
3
2
1
40
60
80
Ambient temperature [
℃
]
-40
-20
0
20
6
L
o
ad
c
u
rr
e
n
t
[A
]
5
①
②
①
1m/s
②
2m/s
0
6
5
4
3
L
o
ad
c
u
rr
e
n
t
[A
]
2
1
40
60
80
Ambient temperature [
℃
]
-40
-20
0
20
① ②
①
1m/s
②
2m/s
BRNS
Applications manual
For BRNS series
