Safety considerations: Low power boost converters

摘要

In most battery powered applications the system voltages need to be generated with voltage regulation circuits, since battery voltage levels can vary over a wide range. Usually efficient voltage regulation is done by switchmode power supply circuits. Welt designed power supply circuits should be able to deal with all possible error conditions specific for their configuration. Faults, for example, can be caused by input voltage dropping too low. Most often this is caused by the battery being discharged below its target end of discharge voltage, which can result in an 'overload' or 'input undervoltage' condition. Failures in manufacturing such as shorts caused by erratic solder joints, wrong assembly in the application circuit or even failure with application circuit parts, can cause shorts at the power supply output.