Design And Analysis Of Automotive Switching Power Supply

With the development of power electronics and semiconductors,The DC-DC converter has been developed comprehensively.The volume keeps decreasing and the efficiency is continuously improved.It has been applied to every aspect of life.So,It is very helpful for us to understand the dc-dc converter deeply by studying the topological structure,correlation parameters and selection of various dc-dc converters.And it can help us to better use it.Cars are closely related to people's travel,and It's a necessity for people to live.New energy vehicles have entered the era of vision with the development of The Times.One day in the future,it will replace traditional cars.And the cost of car electronics in the car is higher and higher.High performance and cost-effective vehicle dc-dc demand is also getting higher and higher.So,This paper is based on the vehicle dc-dc converter.Discussing and analyzing the vehicle dc-dc with multiple topologies.It discusses the knowledge of the vehicle-mounted dc-dc converter and Analyzes the advantages and disadvantages of various vehicle-mounted dc-dc and its application in automobile.In this paper,we analyze the vehicle-mounted dc-dc converters with Single-chip flyback,Active Clamped Forward,BUCK and push-pull,Half-bridge LLC resonant,and Phase-shifted full-bridge five topological structures.The above five kinds of topology is described in detail the working principle of switch power supply,the working sequence and analyzed the related parameters.Furthermore,the advantages and disadvantages of the on-board switching power supply of various topologies are explained in detail.And analyzing the application environment suitable for the switching power supply of different topologies.We choose Single-ended flyback switch power supply as an example.We use the test board for testing.Through the experiment,the waveform of each point of the switching power supply is analyzed under different output power output.In order to discuss the feasibility and the rationality of the selection of switch power supply design.