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Burn-in Testing Techniques for Switching Power Supplies


One of the consequences of the rapid growth of the telecommunications, desktop computing, and network server markets is a burgeoning demand for switching power supplies and DC-to-DC converters. While these power supplies are typically inexpensive, a high level of quality must be maintained through careful production testing. Highly accelerated stress screening (HASS) or ?burn-in? is a common production step for switching power supplies designed for computers and servers. Extended environmental testing is performed to ensure the product will continue to function properly over its entire service life. It is not uncommon to age and monitor thousands of power supplies at once. When designing this type of test system, the biggest challenge is dealing with the high number of channels the system must monitor and the test system surroundings. Large numbers of switching power supplies can produce tremendous amounts of electrical noise, which can reduce the test system?s measur ement performance significantly. Job #2260