新型多路输出数字调压电路的设计  

A novel multi-output digital voltage regulator circuit

作　　者：金杰[1] 于志辉[1] 李可佳[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《电路与系统学报》2012年第2期84-87,83,共5页Journal of Circuits and Systems

基　　金：国家自然科学基金项目:基于电光效应双向调谐的ROADM研究(60777014);高等学校博士学科点专项科研基金:用于光网络节点的多波长电光调谐滤波技术(20090032110027)

摘　　要：研究了一种新型多路输出数字调压电路。以FPGA为核心,利用其丰富的I/O口,实现多路电压同时输出。待转换的数据经USB2.0接口输入FPGA内部FIFO中,减少电压配置时间。采用高压运放芯片,工作于非对称供电模式。实验结果表明,电压调节范围-39V^+49.95V,步进调节灵敏度为0.0244V,最大输出电流50mA,纹波电压小于2mV。A novel multi-output digital voltage regulator circuit is proposed. FPGA is employed as a core controller, considering the following advantages, its extensive I/O ports enable multi-channel voltage output simultaneously, and dates to be converted is entered into the FIFO of FPGA by USB2.0 interface, which reduces voltage configuration time. In addition, high-voltage op-amp is applied in the circuit, which works in asymmetric power model. Test results indicate that voltage adjustment is -39-＋49.95V, stepping adjustment sensitivity reaches 0.0244V, maximum output current is 50mA, and ripple voltage is less than 2mV.

关 键 词：数字调压 多路输出 FPGA USB2.0 高压运放 非对称供电 

分 类 号：TN86[电子电信—信息与通信工程]