BI YE SHE JI
（20  届）
电动汽车DC/DC变换器的设计
所在学院                           
专业班级沃尔沃飞渡技术论坛          自动化           
学生姓名gto汽车            学号           
指导教师            职称           
完成日期          年      月     
摘  要
电动汽车DC/ DC变换器是现代电力电子设备不可或缺的组成部分，其质量的优劣直接影响子设备性能，其体积的大小也直接影响到电子设备整体的体积。本设计根据设计任务进行了方
案设计，设计了相应的硬件电路，研制了半桥开关电源。整个系统包括主电路、控制电路和反馈电路蔚来汽车坠楼致2死三部分内容。系统主电路包括单相输入整流、半桥式逆变、高频交流输出、输出整流、输出滤波几部分。控制电路包括主电路开关管控制脉冲的产生和保护电路。论文具体地介绍了主电路、控制电路、驱动电路等各部分的设计及实验过程，包括元器件的选取以及参数计算。本设计中采用的芯片主要是PWM控制芯片SG3525A。设计过程中程充分利用了SG3525A的控制性能，具有宽的可调工作频率，死区时间可调，具有输入欠电压锁定功能和双路输出电流。
途观车友会
关键词：直流变换器；SG3525；高频变压器；MOSFET

中国油价调整
Abstract
Electric vehicle DC/ DC converter is a modern power electronic equipment indispensable component, its quality has a direct influence on equipment performance, its size will directly affect the whole volume of electronic equipment. According to the design of desig
n tasks for the design, designs the corresponding hardware circuit, a half-bridge switching power supply development. The whole system consists of main circuit, control circuit and feedback circuit three parts. System main circuit comprises a single-phase input rectifier, half-bridge inverter, high frequency AC output, output rectifier, output filter sections. The control circuit comprises a main circuit switch tube to control the pulse generation and protection circuit. This paper introduces the main circuit, control circuit, driving circuit and other parts of the design and the experimental process, including the selection of components and parameters calculation. The design of the chip is mainly PWM control chip SG3525A. The design process of medium-range makes full use of SG3525A control performance, wide adjustable frequency, adjustable dead time, with input under-voltage locking function and dual output current.