Design of a rapid-start, isolated power system presents unique challenges. These systems, leveraged in rapid-start applications, need to start in milliseconds - every time. For example, a growing number of vehicles use start-stop engine technology to conserve fuel and battery power at traffic signals and other situations when the vehicle is stationary. In these applications, some electrical systems that would otherwise draw significant power while the vehicle idles may be shut down. However, those same systems need to be powered up again quickly and reliably. This is where rapid-start systems are essential. This whitepaper will help you with your own rapid start power system design.