USB-C powerløsning med innovativ tre-niveau topologi

Renesas er klar med en ny USB-C powerløsning, der takket være brugen af en innovativ tre-niveau topologi kan forbedre ydelsen og reducere systemstørrelsen (in english).

Renesas Electronics  hasintroduced the RAA489300/RAA489301 high-performance buck controller designed with a three-level buck topology used for battery charging and voltage regulation in USB-C systems such as multiple-port USB-PD chargers, portable power stations, PC docking station, robots, drones, and other applications that need a high efficiency DC/DC controller.

The three-level buck converter topology enabled by the new IC delivers exceptional efficiency and significantly reduces the required inductance for regulating the output voltage. Its innovative design minimizes power loss and reduces system size, making it ideal for compact, high-performance applications.

The three-level topology consists of two additional switches and a flying capacitor compared to a conventional two-level buck converter. The flying capacitor reduces voltage stress on the switches, allowing designers to use lower voltage FETs with better figures of merit. The result is reduced conduction and switching losses. This topology also enables the use of a smaller inductor with peak-to-peak ripple of only about 25 percent of that of a two-level converter, enabling reduced inductor core and direct current resistance losses.

Renesas is a worldwide leader in USB-PD solutions, offering a comprehensive range of products including turnkey solutions for various applications. Renesas helps customers shorten their time-to-market with an extensive development environment and pre-certified USB-IF reference designs. Renesas USB-PD solutions offer superior quality and safety, along with high efficiency and power density.

- This three-level buck topology solution is a prime example of Renesas’ worldwide leadership in battery charging. The innovative technology includes patent-pending breakthroughs that offer our customers clear advantages over competing USB-C power offerings, says Gaurang Shah, Vice President of the Power Division at Renesas.

The 3-Level DC-DC RAA489300/RAA489301 battery charger and voltage regulator offers superior thermal performance which reduces cooling requirements and results in cost and space savings. This innovative approach addresses the growing demand for compact and efficient power management systems.