LED drivers come in different types of current and voltage control modes, such as constant current, constant voltage, or a mix of both, to provide stable power supply for residential or commercial LED lighting devices. The topology structure includes AC-AC, AC-DC, boost, buck, and buck-boost. LED drivers support a wide range of input voltage selection parameters, such as minimum and maximum input voltage, output voltage and current (maximum), total power output, and dimming characteristics. Therefore, this technology can be widely applied in various situations.