STR-X6769
Off-Line Quasi-Resonant Switching Regulators
STR-X6769
A.S.O. temperature derating coefficient
100
Curve
80
60
40
20
0
0 20 40 60 80 100 120
TF 〔℃〕
Internal frame temperature
STR-X6769
Ta=25℃
MOS FET A.S.O. Curve Single pluse
100
10
Determined by
On-Resistance
1 ms
0.1ms
1 Apply A.S.O temperature
coefficient from the left graph
to this curve for evaluating
actual operations' safety
0.1
10
100
VDS[V]
Drain-to-Source Voltage
1000
STR-X6769
Avalanche energy derating curve
100
80
60
40
20
0
25
50
75 100 125 150
Tch [℃]
Channel temperature
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com