Digital Pulse-Width Modulation Integrated Circuit Controllers

提出了用于电源管理应用的基于CMOS的脉宽调制（PWM）集成电路（IC）的分析、设计和开发。 这项活动代表了一个新的模式，用于硬件控制器在广泛的电源管理应用，包括离线电源，工业和电信直流-直流转换器，直流-直流转换器应用在台式机和便携式计算设备，并在蜂窝电话手机。 在过去三十年的时间里，模拟PWM控制器在这些应用中占据主导地位。 随着数字CMOS技术和相关设计工具的出现，现在用数字IC控制器取代模拟控制器是非常可行的，这些控制器在分辨率、响应速度、芯片尺寸、成本等各个方面都与前者的性能相匹配，并提供更多的优势。 在支持电池供电的便携式设备的非常低的功率模式、通过在线调整可调参数实现的效率增强策略以及通过减少分立元件数量实现的成本节约方面，将实现优点。 具体而言，传统上用于模拟解决方案中的补偿组件随着数字控制技术而变得过时，并且通过使用嵌入式计算能力来实现状态和参数估计方法，也减少了对硬件感测组件的需求。 该项目包括研究实现上述目标的方法。 也就是说，需要实现这些目标的系统和控制架构，结合在硅硬件级的设计考虑。 研究将集中在一些代表性的应用程序中的例子。

The analysis, design, and development of CMOS-based pulse-width modulation (PWM) integrated circuits (ICs) for power management applications is proposed. This activity represents a new paradigm for the hardware controllers used in a broad range of power management applications that include off-line power supplies, industrial and telecommunication dc-dc converters, and dc-dc converters applied in desktop and portable computing equipment, and in cellular telephone handsets. Over a period encompassing the last three decades, analog PWM controllers have dominated these applications. With the advent of digital CMOS technologies, and associated design tools, it is now very feasible to supplant the analog controllers with digital IC controllers that match the former's performance in all aspects - resolution, speed of response, die size, cost - and offer further advantages. Advantages will be realized in supporting very low power modes for battery-powered portable equipment, in efficiency enhancing strategies realized by on-line tuning of adjustable parameters, and cost savings realized by reduction of discrete component count. Specifically, compensation components traditionally used in analog solutions are made obsolete with digital control technology, and through use of embedded computational power to implement state and parameter estimation methodologies, the need for hardware sensing components is also reduced. The project encompasses the study of methodologies for achieving the goals stated here. Namely, the system and control architectures needed to achieve these objectives are to be addressed, in conjunction with design considerations at the silicon hardware level. The research will focus on examples, taken from a number of representative applications.