With the rapid development of information technologies such as artificial intelligence, 5G, and big data, the total energy consumption of infrastructures like communication base stations and data centers is continually rising. At the same time, the evolution of hardware, driven by advancements in information technology, has increased the power demands of the equipment itself. To meet the growing power demands of information devices while reducing overall energy consumption, there is a rising need for improved power supply efficiency and higher power density in information power systems.

Power density can be enhanced by increasing switching frequency, which helps reduce the size of passive components. However, increasing frequency typically leads to challenges such as higher switching losses, difficulty in designing high-efficiency, high-density magnetic components, and reduced impedance in EMI common-mode loops. Therefore, the challenge facing information power systems is how to improve efficiency and maintain system performance while increasing power density.

PMIC researchers, in response to these challenges, have developed several innovative power conversion technologies based on the concepts of partial power regulation and cellularized design. PMIC’s research in this field includes:

• Research on the overall architecture of power supply systems
• Development of high-efficiency, high-density converter topology construction methods
• Design of high-efficiency, high-density magnetic components
• Power system control studies
• Research on EMI suppression methods based on topology architecture and control strategies