Digitally Controlled Low-Power Hybrid SMPS

开关电源（SMPS）是高效的功率处理设备，为当今几乎所有的电气设备提供调节的电压或电流。DC-DC和AC-DC低功率（LP）SMPS，处理功率从几分之一瓦到几百瓦，广泛用于计算机、通信设备、便携式电子设备和许多其他应用。例如，在现代蜂窝电话中，超过20种不同的SMPS供应各种功能块。在这些应用中，LP SMPS是器件总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。这些电抗元件的尺寸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、升压及其简单的衍生物。这些拓扑结构对无功元件的最小化和效率提高的可能性提出了严格的物理限制。这些相当初级的拓扑结构的主导地位是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具有成本效益的实施方式，但不适合调节具有大量开关或/和操作模式的高级转换器拓扑结构，而这些拓扑结构为减少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高级拓扑结构的调节所需的多模式控制律的能力非常有限。** 本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。为了实现这一主要目标，新一代的电源，命名为混合开关电源，将结合联合收割机几种不同的功率传输和处理技术，通常是单独使用，在一个单一的电源转换器结构。

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.