DESIGN FOR RELIABILITY: DC-DC POWER CONVERTER RELIABILITY

摘要

Temperature step tests whichinclude low temperature step-stress testing and high temperature step-stress testing. These tests are to discover any thermal problems, such as circuit design issues and component failures, and to ensure enough temperature margin of the product. Rapid thermal cycling or thermal shock. The temperature ramp rate should be no less than 30 deg C/min. The test is to discover any material incompatibility and problems caused by different CTE, such as solder joint failure, crack components, and intermittent component failures.