Digitally Controlled Low-Power Hybrid SMPS

数控低功耗混合 SMPS

• 批准号: RGPIN-2014-04276
• 负责人: Prodic, Aleksandar
• 金额: $ 3.72万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=662639
• 关键词: Digitally; Controlled; Low; Power; Hybrid

Switch-mode power supplies (SMPS) are highly efficient power processing devices providing regulated voltage or current for virtually all electric devices today. Dc-dc and ac-dc low-power (LP) SMPS, processing power from a fraction of watt to several hundreds of watts are widely used in computers, communication devices, portable electronics, and numerous other applications. For example, in modern cell phones more than 20 different SMPS supply various functional blocks. In those applications, the LP SMPS are among the largest contributors to the overall volume and the weight of the device. As such, they are one of the main obstacles in further minimization of the devices. Most of this volume, by far, is taken by the inductors and capacitors of the SMPS. The size of these reactive components is dictated by topological limitations and requirements for high power processing efficiency.**The existing LP SMPS almost exclusively rely on fairly basic 2-switch and 4-switch power stage topologies, such as buck, boost, and their simple derivations. These topologies put stringent physical limits on the possibilities for the minimization of reactive components and for efficiency improvements. The dominance of these fairly rudimentary topologies is a direct consequence of the traditional use analog controllers in LP SMPS. The analog solution provide simple and cost-effective implementation but are ill-suited for the regulation of advanced converter topologies with a larger number of switches or/and operating modes, which provide more possibilities for volume reduction and efficiency improvements. This is mostly due to very limited ability of inflexible analog controllers to implement multi-mode control laws required for regulation of more advanced topologies. **The ultimate goal of this research is to develop new topological and complementary control solutions that will overcome existing physical limitations and allow further minimization of the LP SMPS. To achieve the main goal, the new generation of supplies, named hybrid SMPS, will combine several different power transfer and processing techniques, which are usually used separately, inside a single power converter structure.

开关模式电源 (SMPS) 是高效的电源处理设备，可为当今几乎所有电子设备提供稳定的电压或电流。 DC-DC 和 AC-DC 低功耗 (LP) SMPS 的处理功率从几分之一瓦到数百瓦，广泛用于计算机、通信设备、便携式电子产品和众多其他应用。例如，在现代手机中，超过 20 个不同的 SMPS 提供各种功能块。在这些应用中，LP SMPS 是设备整体体积和重量的最大贡献者之一。因此，它们是进一步最小化设备的主要障碍之一。到目前为止，该体积的大部分由 SMPS 的电感器和电容器占据。这些无功组件的大小取决于拓扑限制和高功率处理效率的要求。**现有的 LP SMPS 几乎完全依赖于相当基本的 2 开关和 4 开关功率级拓扑，例如降压、升压及其简单的推导。这些拓扑结构对最小化无功组件和提高效率的可能性提出了严格的物理限制。这些相当基本的拓扑的主导地位是 LP SMPS 中传统使用模拟控制器的直接结果。模拟解决方案提供了简单且经济高效的实施方式，但不适合具有大量开关或/和操作模式的高级转换器拓扑的调节，这为减小体积和提高效率提供了更多可能性。这主要是由于不灵活的模拟控制器实现更先进拓扑调节所需的多模式控制法则的能力非常有限。 **这项研究的最终目标是开发新的拓扑和互补控制解决方案，以克服现有的物理限制并允许进一步最小化 LP SMPS。为了实现主要目标，称为混合 SMPS 的新一代电源将在单个电源转换器结构内结合多种不同的电源传输和处理技术，这些技术通常单独​​使用。