IN Brief:
- Renesas has expanded its GaN-based HWLLC charging platform to 500W or higher operation.
- Four new controller ICs are intended to support denser, more efficient AC/DC designs.
- The platform spans industrial, infrastructure, and wider variable-load charging applications.
Renesas has expanded its AC/DC and power-adapter portfolio with a GaN-based Half-Wave LLC platform designed to support 500W or higher operation across industrial, infrastructure, and IoT systems.
The platform is built to scale a compact power architecture from 100W-class designs to substantially higher outputs without the size, thermal, and efficiency penalties that come with older topologies. At the centre of the release is the RRW11011, an interleaved power factor correction and HWLLC combo controller designed for high power density and high efficiency, with phase-shift control intended to reduce ripple, balance current, and improve robustness.
Renesas has paired that controller with three further devices: the RRW30120 USB Power Delivery protocol and closed-loop controller, the RRW40120 half-bridge GaN gate driver, and the RRW43110 intelligent synchronous rectifier controller. Together, the devices form a coordinated control chain for higher-density AC/DC power supplies and fast-charging designs.
The company says the platform supports a wide 5V to 48V output range required by USB Extended Power Range and other variable-load systems. In a 240W USB EPR power-adapter design, Renesas is quoting 3W/cc power density and 96.5% peak efficiency. Beyond that reference point, the wider 500W envelope opens the door to higher-power charging and AC/DC conversion in products ranging from tools and lighting to larger displays and other electrically demanding equipment.
Renesas is also framing the platform as a route to simpler design reuse across wattages and form factors, with fewer magnetic and component penalties than more conventional implementations. As GaN devices continue to shift the economics of switching speed, losses, and thermal behaviour, the more interesting competition is moving towards control architectures and complete ecosystems rather than discrete power devices alone.
