STR-X6737
Off-Line Quasi-Resonant Switching Regulators
STR-X6737
MOSFET Ta-PD1 Curve
50
45
With infinite heatsink
40
35
30
25
20
15
Without heatsink
10
5 PD1=2.8[W]
0
0 20 40 60 80 100 120 140
Ta [℃]
Ambient tempera ture
STR-X6737
MIC TF-PD2 Curve
1
0.8
0.6
0.4
0.2
0
0 20 40 60 80 100 120 140
TF〔℃〕
Internal frame temperature
STR-X6737
Transient thermal resistance curve
1
0.1
0.01
0.001
1.0E-06
1.0E-05
1.0E-04
t [sec]
time
1.0E-03
1.0E-02
1.0E-01
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com