EPR-12 Datasheet, PDF (30/40 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP-12 - 145 W PC Forward Converter with TOP247 and 10 W 5 V Output Standby Flyback with TNY266

EPR-12 – PC Forward Converter with Standby Flyback Power Supply
01-Feb-05
9 Test Results
Thermal and Dissipation Data
TOP247 dissipation at 90 VAC and 5 V at 15 A, 3.3 V at 7 A, 12 V at 4 A (approximately
140 W) was measured 5.4 W.
The unit was enclosed in a standard ATX enclosure. The ambient external temperature
around the enclosure was 25 °C and the internal ambient in the enclosure in the box
near TOP247 heatsink was measured 37 °C.
The TOP247 source tab temperature for above conditions was measured 53 °C.
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