意法半导体65W GaN转换器为成本敏感型应用提供紧凑型电源解决方案

65W GaN converter delivers space-saving power for cost-conscious applications

65W GaN转换器为成本敏感型应用提供紧凑型电源解决方案

ST’s VIPerGaN65D flyback converter, with its SOIC16 outline, permits extremely small and economical power supplies, adapters, and USB-PD (Power Delivery) fast chargers up to 65W with universal input voltage.

意法半导体推出的VIPerGaN65D反激式转换器采用SOIC16封装，可打造超小型经济高效的电源适配器、USB-PD（供电）快速充电器等产品，支持通用输入电压条件下最高65W输出功率。

The quasi-resonant offline converter integrates a 700V gallium nitride (GaN) transistor and optimized gate driver with typical protection features, making wide-bandgap technology easily accessible to elevate power density and efficiency. The GaN transistor operates at up to 240kHz, with minimal switching losses, permitting a small flyback transformer, small passive components, and a compact, low-cost circuit board.

这款准谐振离线式转换器集成了700V氮化镓 (GaN) 晶体管和优化的栅极驱动器，具备典型保护功能，使宽禁带半导体技术更易实现高功率密度和高能效。GaN晶体管的最高工作频率达240kHz，开关损耗极低，支持使用小型反激变压器、微型无源元件和紧凑型低成本电路板。

While other members of the VIPerGaN family are packaged in 5mm x 6mm DFN, the VIPerGaN65D is packaged into a more traditional SO16n (narrow) outline.

尽管VIPerGaN系列的其他成员均采用5mm x 6mm DFN封装，VIPerGaN65D则采用更传统的SO16n（窄体）封装。

The converter operates with zero-voltage switching and can adjust the valley-synchronization delay to ensure the GaN transistor always turns on at the valley of the drain resonance. Also featuring dynamic blanking time to help maintain efficiency with increasing input voltage, the converter adapts to maximize overall efficiency at any line and load condition. In addition, feedforward compensation minimizes the input peak power variation over the input voltage range.

该转换器采用零电压开关技术，可调整谷底同步延迟时间，确保GaN晶体管始终在漏极谐振谷底导通。其动态消隐时间特性可随输入电压升高保持效率水平，使转换器能适应各种线路和负载条件实现整体效率最大化。此外，前馈补偿能有效降低输入电压范围内的输入峰值功率变化。

The VIPerGaN65D current limit of 3.5A lets the converter deliver up to 65W when designed for the universal input voltage range from 85V to 265V. Designing for 185V-265V input allows a maximum power rating of 85W. The standby power is below 30mW, meeting requirements of the latest international energy efficiency standards.

在85V至265V通用输入电压范围设计条件下，VIPerGaN65D凭借3.5A的限流能力可实现最高65W输出功率。当输入电压设计范围为185V-265V时，最大额定功率可达85W。待机功耗低于30mW，符合最新国际能效标准要求。

The VIPerGaN65D enables tiny, low-cost fast chargers and adapters, and can power washing machines, dishwashers, coffee makers, televisions, set-top boxes, digital cameras, portable audio players, cordless shavers, and more. It is also used in auxiliary supplies for desktop PCs and servers, building and home automation equipment, energy meters, domestic and architectural lighting, and air conditioners.

VIPerGaN65D可应用于微型低成本快速充电器/适配器，并为洗衣机、洗碗机、咖啡机、电视机、机顶盒、数码相机、便携式音频设备、无线剃须刀等设备供电。此外，还可用于台式电脑和服务器的辅助电源、楼宇及家庭自动化设备、智能电表、家用及建筑照明系统、空调等场景。

Contributing to the minimal bill of materials, the VIPerGaN65D integrates a SENSEFET (current-sensing power MOSFET) that provides accurate current sensing needed to optimize efficiency and activate system protection. Built-in features include overcurrent protection, output overvoltage protection, input-voltage feed-forward compensation, brown-in/brown-out protection, input-overvoltage protection, output overload protection, output short-circuit protection, and thermal shutdown. All the protection features have auto-restart and the converter also implements frequency jitter for EMI suppression.

为最大限度精简物料清单，VIPerGaN65D集成SENSEFET（电流检测功率MOSFET），可提供精确电流检测以优化效率并激活系统保护。其内置功能包括过流保护、输出过压保护、输入电压前馈补偿、输入欠压保护、输入过压保护、输出过载保护、输出短路保护和热关断。所有保护功能均支持自动重启。此外，转换器还采用频率抖动技术以抑制电磁干扰。

The EVLVIPGAN65DF reference design helps accelerate power-supply projects based on the VIPerGaN65D. Combining the converter with secondary synchronous rectification, controlled by ST’s SRK1001 adaptive controller, the EVLVIPGAN65DF presents a fully protected 24V, 65W power supply with peak efficiency greater than 93%.

EVLVIPGAN65DF参考设计可加速基于VIPerGaN65D的电源项目开发。该方案将转换器与次级同步整流技术相结合（由意法半导体SRK1001自适应控制器控制），打造出具备全面保护功能的24V/65W电源系统，峰值效率超过93%。

The VIPerGaN65D is available now in the SOIC16 narrow-body package, from $1.16 each for orders of 1000 pieces.

VIPerGaN65D现已上市，采用SOIC16窄体封装；千片起订单价1.16美元。

For further information please visit: www.st.com/vipergan65d

如需了解更多信息，请访问：www.st.com/vipergan65d