Power management refers to how to effectively allocate power to different components of the system. Power management is crucial for mobile devices that rely on battery power. By reducing the energy consumption when components are idle, an excellent power management system can extend battery life by two or three times. Power management technology, also known as power control technology, belongs to the category of power electronics technology and is an interdisciplinary technology that integrates multiple disciplines such as power transformation, modern electronics, network construction, and automatic control. It has been widely applied in many fields such as industry, energy, transportation, information, aviation, national defense, education, culture, and so on |