UCG28836
- Integrated 750V GaN HEMT
- Dynamic QR/DCM/CCM modes of operation
- High power density: up to 500kHz switching frequency
- Enable low BoM cost by integration
- Remove auxiliary winding with self bias
- Integrated input and output voltage sensing
- Integrated current sense
- Integrated HV start-up
- Integrated X-cap discharge
- High efficiency and low EMI performance
- Ultra-low standby power: <30mW
- Frequency foldback and burst mode
- Valley locking
- Frequency dithering
- Switching slew rate control
- Comprehensive protection features
- Overtemperature protection
- Input and output overvoltage protection
- Short-circuit protection
- Cycle-by-cycle current limit
- Two-level over power protection with LPS
- Brownin and brownout protection
- Open feedback protection
- Flexible configurability through external
resistors
- X-cap discharge and CCM mode disable
- Selectable switching slew rate
- Multiple clamping frequency settings
- Fault latch or auto-restart
- Maximum and minimum peak current ratio
UCG2883x/4x is a high-frequency, quasi-resonant flyback converter with a built-in 750V GaN high electron mobility transistor (HEMT) with low Rds(on) for AC to DC power conversion. The UCG2883x/4x is designed for high power density applications, such as cell phone fast chargers and notebook adapters. The key feature of this device is the self-bias and auxless sensing scheme which eliminates the need of the auxiliary winding and simplifies the system design with higher efficiency.
The UCG2883x/4x also features intelligent mode transition (CCM/QR/DCM) to enable high efficiency across a wide power range and <30mW standby power consumption. In addition, UCG2883x/4x includes a full list of protections such as brownin and brownout protection, SCP, OVP, OPP, LPS, OFB, and OTP. The cycle-by-cycle current limit allows for fast response to the fault conditions to safeguard the system and improve the reliability. In a small 5mm × 5mm package, the UCG2883x/4x has dedicated configuration pins to offer more flexibility. Only resistors are needed to tune certain parameters for each system, enabling a platform design with one device.
设计与开发
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UCG28836EVM-150 — UCG28836 评估模块
UCG28836EVM-150 是一款 65W USB-C™ PD 评估模块 (EVM)，可评估适用于交流/直流适配器、充电器、USB 墙壁插座和其他应用的离线 GaN 集成准谐振反激式转换器。该 EVM 符合 CoC 第 2 级和 DoE 第 6 级标准的能效要求。EVM 仅用于评估目的，并非产品。UCG28836EVM-150 将 90VRMS 至 264VRMS 的输入电压向下转换为 5VDC、9VDC、15VDC 或 20VDC 的可选 USB-C PD 输出电压。该 EVM 还可以配置来产生 5VDC 至 24VDC 范围内的固定输出电压。该 EVM 设计用于提供最高 3.00A (...)
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VQFN (REZ) | 12 | Ultra Librarian |
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