RRW21115-113

The RRW21115 is a System‑in‑Package (SiP) product that integrates a 700V SuperGaN^® FET with a high‑performance digital AC/DC primary‑side regulation (PSR) flyback controller. A configurable light‑load mode allows designers to optimize the system for ultra‑low no‑load power consumption or fast transient response through a single external resistor. Operating in quasi‑resonant mode, the device delivers high efficiency at heavy loads while minimizing external component count, simplifying EMI design, and reducing overall bill‑of‑materials cost.

PrimAccurate^™ primary‑side regulation removes the need for secondary‑side feedback components and maintains excellent line and load regulation. The digital control architecture eliminates external loop‑compensation components and uses pulse‑by‑pulse waveform analysis to achieve a faster dynamic response than traditional approaches. A built‑in power‑limit function supports transformer optimization across universal off‑line input ranges, and the RRW21115 is typically used for applications around 25W.

The device enables high average active efficiency and no‑load power consumption below 75mW. Soft‑start functionality ensures smooth startup into large capacitive loads at any output voltage, making it well‑suited for networking and monitor adapter designs.

The RRW21115 incorporates internal and external over‑voltage protection, with the external path providing supplemental output OVP for additional system protection.