For battery charging and voltage regulation in USB-C systems, such as multiple-port USB-PD chargers, portable power stations, PC docking stations, robots, drones, and other applications requiring a high efficiency DC/DC controller, Renesas Electronics unveiled the RAA489300/RAA489301 high-performance buck controller with a three-level buck topology.
The new IC allows for a three-level buck converter topology, which greatly lowers the amount of inductance needed to control the output voltage while delivering remarkable efficiency. It is perfect for small, high-performance applications because of its creative design, which minimizes power loss and shrinks the system size.
Compared to a traditional two-level buck converter, the three-level architecture includes a flying capacitor and two more switches. By lowering the voltage stress on the switches, the flying capacitor enables designers to employ FETs with higher figures of merit at lower voltages.
Switching and conduction losses are decreased as a result. With a peak-to-peak ripple of only roughly 25% of that of a two-level converter, this topology also makes it possible to utilize a smaller inductor, which lowers the losses from the inductor core and direct current resistance.
Renesas is a major innovator in USB-PD solutions, providing a wide range of devices, including turnkey solutions for different uses.
With a comprehensive development environment and pre-certified USB-IF reference designs, Renesas assists customers in reducing time-to-market. In addition to great efficiency and power density, Renesas USB-PD products provide exceptional quality and safety.
Superior thermal performance provided by the 3-Level DC-DC RAA489300/RAA489301 battery charger and voltage regulator lowers the need for cooling, saving money and space. The increasing need for small and effective power management systems is met by this innovative solution.
Key Features of the RAA489300/RAA489301battery charger and voltage regulator:
- Wide range of input and output voltages for use in voltage battery packs and with various PD adapters
- Integrated safety features with built-in protection mechanisms against overcharging, overheating, and voltage anomalies
- Scalability for easily adapting to various power levels and application requirements
- Optimized switching architecture divides voltage across power switches, improving efficiency
- Minimizes power consumption, contributing to greener, more sustainable designs
- Lower thermal stress improves system reliability and extends product lifespan
Leadership Comments
“This three-level buck topology solution is a prime example of Renesas’ worldwide leadership in battery charging,” said Gaurang Shah, Vice President of the Power Division at Renesas. “The innovative technology includes patent-pending breakthroughs that offer our customers clear advantages over competing USB-C power offerings.”
Winning Combinations
Renesas offers the RTK-251-SinkCharger-240W and the 240W Dual-Port Daughter Card Winning Combinations that minimize the effort required for customers to design USB-C battery charging into their products.
Winning Combinations are technically vetted system architectures from mutually compatible devices that work together seamlessly to bring an optimized, low-risk design for faster time to market.
Renesas offers more than 400 Winning Combinations with a wide range of products from the Renesas portfolio to enable customers to speed up the design process and bring their products to market more quickly.
They can be found at renesas.com/win.
Device Availability
The RAA489300/RAA489301 is available today in a 4×4 mm 32-lead TQFN package.
Comprehensive design support and tools, including the RTK-251-SinkCharger-240W Kit and the RTKA489300DE0000BU Evaluation Board, are also available.
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