特長
- Integrated with 700V, 150mΩ SuperGaN FET
- JEDEC‑qualified GaN technology
- Less than 75mW standby power consumption in typical 25W to 65W+ adapter designs
- Supports single‑layer PCB layout to reduce system cost
- Compatible with TL431 and third‑party secondary‑side controllers for RapidCharge™ and fixed‑voltage designs
- Operates in adaptive MMC: PWM, PFM, and burst mode
- Supports QR and continuous‑conduction‑mode (CCM) operation
- Improves efficiency and eliminates audible noise
- Enables optimization for size, efficiency, and EMI performance
- Dual‑polarity auxiliary‑winding sensing for improved EMI and simplified transformer design
- Supports switching frequencies up to 270kHz
- Built‑in protections: brown‑in/brown‑out, output short‑circuit, output over‑voltage, optocoupler failure
- User‑adjustable internal OTP threshold
説明
The RRW22121 is a System‑in‑Package (SiP) product that integrates a 700V SuperGaN® FET with a high‑performance AC/DC primary‑side digital flyback controller for secondary‑side regulation (SSR). Designed for 65W and higher‑power adapters, it supports operation with TL431 shunt regulators and other third‑party secondary‑side controllers across a wide range of end applications.
The device operates in constant‑frequency quasi‑resonant (QR) mode and uses adaptive multi‑mode control (MMC), which includes pulse‑width modulation (PWM), pulse‑frequency modulation (PFM), and burst‑mode operation. This control architecture improves efficiency, reduces electromagnetic interference (EMI), and eliminates audible noise across varying load conditions.
When paired with a TL431 or other secondary‑side controllers, the RRW22121 achieves tight constant‑voltage (CV), fast dynamic load response, and standby power consumption below 75mW in typical high‑power designs. Its integrated protection features and support for dual‑polarity auxiliary‑winding sensing simplify transformer design, enhance EMI performance, and help reduce overall system cost.
パラメータ
| 属性 | 値 |
|---|---|
| Topology Characteristic | PWM/PFM Flyback |
| Control Mode | Peak Current Mode DCM/CCM |
| UVLO Rising (V) | 15.3 |
| UVLO Falling (V) | 7.5 |
| VBIAS (Max) (V) | 42 |
| PWMs (#) | 1 |
| Output Power Max (W) | 100 |
| Switching Frequency (KHz) | 70 - 270 |
| Controller / Integrated | Integrated |
| Advanced Features | SuperGaN Integrated |
| Simulation Model Available | No |
| Temp. Range (°C) | -40 to +150°C |
| Qualification Level | Standard |
パッケージオプション
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) |
|---|---|---|
| QFN8x8 | 8 x 8 x 0.85 | 22 |
製品比較
アプリケーション
- Rapid-charging AC/DC adapters for smartphones, tablets, power tools, and other portable devices
- Other power supply applications for TV, networking, appliances, and auxiliary power