高功耗嵌入式单板计算机的电源设计与实现

摘要

In order to satisfy the power supply of embedded single board computer based on high-powered dual cores processor MPC8641D, the feature of the MPC8641D and function of computer are analyzed, the circuits of power supply based on various DC-DC chips is designed, and by design the controller of power on sequence based on CPLD, the sequence control of all kinds of power supply and the management of reset are implemented. The practice indicated the stability and flexibility of the design.%为了满足基于高性能双核MPC8641D处理器的高功耗嵌入式单板计算机的电源设计,分析了处理器的供电要求和单板计算机的整体电路功能,开展了基于多种电源转换芯片的供电设计,解决了高功耗嵌入式单板计算机的供电问题.通过设计基于可编程逻辑器件CPLD的上电时序控制器,实现了多种电源之间的加电时序控制以及复位管理.单板计算机的实际应用结果表明该电源设计稳定可靠、灵活通用.