用UC3842的電源,空載MOS管溫升略高,如何降低功率管溫升?
一款用UC3842的開關電源,12V 2A、5V2A(USB外置盒用)空載時MOS功率管溫升略高,有點燙手,而我用過別的UC3842電源功率管幾乎無溫升,如何降低功率管溫升呢?
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You can operate with a lower switching frequency with no load condition. It will reduce the switching loss. Someone has done in this way.
Check the lower MOSFET temparature module, find out the timing R and C subcircuit in its control circuit. Please post it if you have some results.
Check the lower MOSFET temparature module, find out the timing R and C subcircuit in its control circuit. Please post it if you have some results.
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