A charger module is a type of power supply used to convert an alternating current (AC) input into higher or lower level DC output voltages. It can also be used to efficiently supply an isolation barrier for the protection of electrical circuits during heavy charging. Generally, these modules are composed of an AC to DC power supply, a power conditioning stage and a protection stage. Charger modules are designed to make the charging process simpler, faster, and more reliable. Additionally, they provide higher power conversion efficiency, greater reliability, and cost savings. Charger modules are used in a variety of applications such as automotive, industrial, and home electronics charging.