Renesas RRW2111x GaN System-in-Packages

Introduction

The Renesas RRW2111x family consists of integrated gallium nitride (GaN) system-in-package (SiP) solutions for compact, efficient AC-DC power conversion. Designed for primary-side quasi-resonant flyback power supplies, these devices target applications requiring approximately 25 W, 45 W, or 65 W of output power.

Part Description

RRW2111x devices combine a 700 V GaN power device with an integrated primary-side flyback regulator in a compact SiP. Their quasi-resonant flyback architecture supports efficient switching behavior while helping designers reduce power-supply size and component count.

The family includes integrated digital control, accurate voltage sensing, and current sensing. Primary-side regulation removes the need for an optocoupler in many flyback designs, simplifying isolated power-supply implementations. Built-in fault-protection functions further support robust operation while reducing the number of external protection components needed.

Key characteristics include:

• 700 V GaN power integration
• Primary-side quasi-resonant flyback regulation
• Power-supply designs targeting 25 W, 45 W, and 65 W applications
• Integrated digital control
• Accurate voltage and current sensing
• Built-in fault protection
• Reduced external component requirements
• Optocoupler-free primary-side regulation capability

Applications

Potential applications for the RRW2111x family include:

• USB-C power adapters
• Fast chargers for portable electronics
• Wall-mounted AC-DC adapters
• Consumer-electronics power supplies
• Notebook and tablet chargers
• Networking-equipment power adapters
• Smart-home controller power supplies
• LED lighting power supplies
• Industrial auxiliary power supplies
• Point-of-sale and office-equipment adapters

Industries

The RRW2111x GaN flyback regulator SiPs may be used in the following industries:

• Consumer electronics
• Mobile-device accessories
• Computing and peripherals
• Telecommunications and networking
• Industrial automation
• Smart-home and building automation
• Lighting
• Retail and point-of-sale systems
• Medical and laboratory equipment, where appropriate system-level compliance is implemented
• Power-adapter and charger manufacturing

Usage Ideas

1. Compact USB-C Charger
   Design a 45 W or 65 W isolated AC-DC charger with reduced component count and a small enclosure footprint.

2. Industrial Controller Auxiliary Supply
   Create a compact flyback supply for powering control electronics, communication modules, and low-voltage logic rails in industrial equipment.

3. Smart Lighting Power Module
   Build an efficient offline power stage for connected LED lighting products that require a compact and protected AC-DC supply.

Conclusion

Renesas RRW2111x devices provide an integrated approach to offline flyback power-supply design. By combining a 700 V GaN device, quasi-resonant control, primary-side sensing, digital control, and protection features in a SiP, the family can help reduce external circuitry and support compact power solutions in the 25 W to 65 W range.