Design of a Wide-input Voltage Regulator Used in Unmanned Aerial Vehicles

A wide range of input voltage switching power supply converter used in unmanned aerial vehicles (UAV) is presented. A novel four switch synchronous rectifier, non-isolated BUCK-BOOST converter technique based on LTC3777 is selected in this supply, hence the following stage can be easily designed to achieve a high efficiency of the UAV. Principle of LTC3777 and main components design methods in supply are introduced. The experimental results show that the converter composed of the BUCK-BOOST converter and back stage converter can achieve high efficiency, high power density and wide range of input voltage of UAV.