DER-50
Set Top Box Design using TOP245R
April 20, 2005
Thermal Performance
Temperature
90
260
Item
VAC VAC
25°C 25°C
43.5°C 26°C
42.5°C 37°C
56°C 53.5°C
46°C 31°C
69.5°C 62°C
48.5°C 41°C
39.5°C 37°C
41.5°C 39°C
41°C 39.5°C
56.5°C 56°C
Ambient
Common Mode Choke (L5)
Bridge (D4, D5, D9, D10)
Transformer (T1)
Clamp Resistor (R5)
TOPSwitch (U1)
Rectifier D2
Rectifier D3
Rectifier D6
Rectifier D8
Resistor R21
Power Integrations
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www.powerint.com
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