标题: | 一个内建霍尔效应电流感测与死时控制机制之 直流降压转换器 A DC-DC Buck Converter with Built-in Hall Effect Current Sensing Device and Dead Time Control Mechanism |
作者: | 曾国峰 苏朝琴 Zeng, Guo-Fong Su, Chau-Chin 电机工程学系 |
关键字: | 同步直流降压转换器;霍尔元件;死时控制;Synchronous DC-DC Buck Converter;Hall Effect Device;Dead Time Control |
公开日期: | 2017 |
摘要: | 本论文提出了一个霍尔元件于积体电路内部进行电流侦测之应用,并实现于电压模式直流同步降压转换器。利用霍尔元件感应流经功率电晶体之电流,并以此霍尔元件之电压讯号将负载区分成多个区段,对不同区段之负载电流量设计其最小化之死时时间,进而降低基板二极体导通损耗以提升效率。 本晶片使用 TSMC 0.25 1P5M HV CMOS 制程,系统操作频率为1MHz,转换器最大效能为94.92%,晶片布局面积为1485×1684μm^2。 This thesis presents an application of Hall device. We use Hall device to sense the power MOS current in integrated circuit for the implement of a voltage mode synchronous DC-DC buck converter. We divide the load region into several sections. According to the current sensed by the Hall device, it minimizes the dead-time region for different load current to decrease body diode conduction loss and increase the efficiency. This chip is fabricated in TSMC 0.25 1P5M HV CMOS process. The frequency of system clock is 1MHz. The maximum efficiency of the converter is 94.92%. The chip area is 1485×1684μm^2。. |
URI: | http://etd.lib.nctu.edu.tw/cdrfb3/record/nctu/#GT070350728 http://hdl.handle.net/11536/142497 |
显示于类别: | Thesis |