Renesas Electronics Launches USB-C Power Solution with Innovative Three-Level Topology, Enhancing Performance While Reducing Size

Renesas Electronics has introduced the RAA489300/RAA489301 high-performance buck controllers, featuring an innovative three-level buck topology. This new USB-C power solution delivers higher efficiency and significantly reduced size for multi-port USB-PD chargers, portable power stations, PC docks, robotics, drones, and other applications requiring high-efficiency DC/DC conversion.

Compared to conventional two-level converters, the three-level topology incorporates a flying capacitor and additional switches, reducing voltage stress on switching components. This enables the use of MOSFETs with lower on-resistance, cutting both conduction and switching losses. The topology also reduces inductor peak-to-peak ripple to approximately 25% of conventional designs, allowing for smaller inductors and improved power density.

The RAA489300/RAA489301 support wide input and output voltage ranges, integrate comprehensive protection features, and deliver excellent thermal performance—reducing cooling requirements and enhancing system reliability. According to Gaurang Shah, Vice President of the Power Division at Renesas, the patented topology provides distinct advantages over competing USB-C power solutions.

Renesas also offers pre-certified USB-IF reference designs and a complete development environment to help customers accelerate time to market.