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: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=587708
• 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.

开关电源（SMPS）是一种高效的电源处理设备，为当今几乎所有的电气设备提供稳压或电流。Dc-dc和ac-dc低功率（LP） SMPS，处理功率从几瓦到几百瓦广泛用于计算机，通信设备，便携式电子产品和许多其他应用。例如，在现代手机中，超过20种不同的SMPS提供各种功能模块。在这些应用中，LP SMPS是器件总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，这个体积的大部分是由SMPS的电感器和电容器占用的。这些无功元件的尺寸取决于拓扑限制和对高功率处理效率的要求。