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Package Information
| CAD Model: | View CAD Model |
| Pkg. Type: | QFN8x8 |
| Pkg. Code: | |
| Lead Count (#): | 22 |
| Pkg. Dimensions (mm): | 8 x 8 x 0.85 |
| Pitch (mm): |
Environmental & Export Classifications
| Moisture Sensitivity Level (MSL) | 3 |
| HTS (US) | 8542.39.0090 |
| RoHS (RRW21112-153) | EnglishJapanese |
| Pb (Lead) Free | |
| ECCN (US) |
Product Attributes
| Lead Count (#) | 22 |
| Carrier Type | Tape & Reel |
| Moisture Sensitivity Level (MSL) | 3 |
| Control Mode | Primary-Side Regulation with Adaptive MMC |
| Switching Frequency (KHz) | 79 - 79 |
| VBIAS (Max) (V) | 18 |
| Temp. Range (°C) | -40 to +150°C |
| Advanced Features | SuperGaN Integrated |
| Application | Low Power Adapters, Industrial Control/Automation, Appliances & White Goods, Network Power, Server Aux Power, Isolated Power for Gate Drivers |
| Cable Drop Comp (mV) | 0 |
| Controller / Integrated | Integrated |
| Country of Assembly | TAIWAN, MALAYSIA |
| Country of Wafer Fabrication | Die1:KR, Die2:JP, Die3:TW |
| Function | PSR Flyback |
| Key Features | Primary-Side Feedback w/o Optocoupler |
| Length (mm) | 8 |
| MOQ | 4000 |
| No-Load Operating Current | 1 |
| Output Power Max (W) | 45 |
| Output Voltage (Max) (V) | 24 |
| Outputs (Max) (#) | 3 |
| PWMs (#) | 1 |
| Parametric Category | Flyback & Forward Controllers |
| Pass Device | |
| Phases (Max) | Flyback & Forward Controllers |
| Pkg. Dimensions (mm) | 8 x 8 x 0.85 |
| Pkg. Type | QFN8x8 |
| Product Category | Flyback & Forward Controllers |
| Protection Features | Brown-out, OTP, UVLO, Output OVP, Input OVP, OCP |
| Qualification Level | Standard |
| Quality Level | Standard |
| Simulation Model Available | No |
| Supply Voltage (max) (V) | 25 - 25 |
| Thickness (mm) | 0.85 |
| Topology Characteristic | PWM/PFM Flyback |
| UVLO Falling (V) | 6.4 |
| UVLO Rising (V) | 13.7 |
| Width (mm) | 8 |
Resources for RRW21112
Description
The RRW21112 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. Its configurable light‑load mode allows the design to be tuned for ultra‑low no‑load power consumption or fast transient response using a single external resistor. The device operates in quasi‑resonant mode to improve efficiency at heavy loads while reducing external component count, simplifying EMI design, and lowering overall bill‑of‑materials cost.
PrimAccurate™ primary‑side regulation eliminates the need for secondary‑side feedback components while maintaining excellent line and load regulation. The digital control architecture removes external loop‑compensation requirements and uses pulse‑by‑pulse waveform analysis to achieve a faster dynamic response than traditional solutions. A built‑in power‑limit function supports transformer optimization across universal off‑line input ranges, and the RRW21112 is typically used for applications around the 45W.
The device enables high average active efficiency and no‑load power consumption below 75mW. Its soft‑start capability provides smooth startup into large capacitive loads at any output voltage, making it suitable for networking and monitor adapter applications.
The RRW21112 includes internal and external over‑voltage protection, with the external path providing supplemental output OVP for enhanced system robustness.