Overview of Quadratic DC-DC Converters

With the rapid progression of new energy resources technology and the increasing application of new energy resources, solar energy, fuel cell and other new energy resources power generation systems have higher requirements for the input voltage range of DC-DC converter. When the input voltage range of traditional DC-DC converter is wide, its duty cycle must be changed in a relatively large range to keep the output voltage stable, which leads to complex controller design and low system stability. The quadratic Boost converter can achieve high voltage gain with squared duty cycle using only a single switch. Thus, it has a wider input voltage range than the traditional switching Boost converter in the same duty cycle range and reduces the design difficulty of the control system. At the same time, the large range undulation of the output voltage of the new energy power generation system also puts forward higher demands for the load transient response speed of the circuit. Therefore, it is very important to study the control technology of quadratic Boost converter with fast load transient response.