浅谈电子设备电源的耐环境应力设计

On Resistance to Environmental Stress Design Power Electronic Devices

主要介绍了电子设备中电源的耐环境应力设计和相应的设计措施,并指出了影响电源可靠性的环境因素有高温、低温、潮湿、温度冲击、机械应力、电磁辐射、噪声干扰、低气压、砂尘、盐雾、淋雨、霉菌和它们的复合形式。电子设备的热量主要集中在电源部分,这些热量如果不能及时散去,就会使电源内部温度过高进而引发故障。所以,电源的热设计是耐环境应力设计要重点考虑的指标之一。

Environment resistant power mainly introduces electronic equipment in thestress design concept and corresponding design measures：effect of power supply reliability environment with high temperature, low temperature, moisture, thermal shock, mechanical stress, electromagnetic radiation, noise, low air pressure, sand and dust, salt fog, rain, the composite form of mold and their electronic equipment;the heat is mainly concentrated in the power supply, the heat if not timely processing, will cause the internal temperature of high power and cause trouble. So the thermal design of power supply should be an index of resistance to environmental stress design key reference.