UCC256402
- Optimized low-power mode and burst mode algorithm
- Burst mode with Soft-ON and Soft-OFF periods
- Minimized audible noise at no load and standby
- User option to disable burst mode
- Opto-coupler low-power operation
- Efficiency performance exceeds DoE Level VI and EU CoC Tier-2 External Power Supply Standards
- Hybrid hysteretic control (HHC)
- Best-in-class transient response
- Fast exit from burst mode
- Robust adaptive dead-time control
- Integrated high-voltage gate driver with 0.6A source and 1.2A sink capability
- Robust capacitive region (ZCS) avoidance scheme
- Over temperature, output over voltage, input undervoltage protection, three levels of overcurrent protection
- Integrated high voltage startup function
- Active X-capacitor discharge function
The UCC25640x is a fully featured LLC controller with integrated high-voltage gate driver. UCC25640x is designed to pair with a PFC controller to provide a complete power system using a minimum of external components. The resulting power system is designed to meet the most stringent requirements for standby power without the need for a separate standby power converter.
UCC25640x provides a highly efficient burst mode with soft-on and soft-off periods to minimize audible noise at standby operation. The burst power level and hysteresis are programmable, simplifying the optimization of efficiency and burst mode operation. Disable burst mode through the pin configuration. UCC25640x uses hybrid hysteretic control to provide best in class line and load transient response.
UCC25640x includes a range of features designed to make LLC converter operation well controlled and protected. Use UCC25640x with UCC28056 or UCC28064A PFC controllers, along with a UCC24624 synchronous rectifier controller to offer a complete power supply option.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | UCC25640x LLC Resonant Controller with Ultra-Low Audible Noise and Standby Power 数据表 (Rev. F) | PDF | HTML | 2026-8-11 | ||
| 应用手册 | UCC25640X 在 LED 照明 PSU 中的优势 | PDF | HTML | 英语版 | PDF | HTML | 2024-1-8 | |
| 应用手册 | 关于 UCC25640x LLC 谐振控制器的常见问题解答 | PDF | HTML | 英语版 | PDF | HTML | 2023-6-23 | |
| 应用手册 | UCC25640x LLC Resonant Controller Features Brief Overview and Bring up Guideline | PDF | HTML | 2022-6-20 | |||
| 应用手册 | 使用混合迟滞控制改善 LLC 转换器的瞬态响应 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | 2021-5-3 | ||
| 技术文章 | How to reduce audible noise and power consumption at standby in your AC/DC design | PDF | HTML | 2020-4-22 | |||
| 应用手册 | Migrating to UCC25640x from UCC25630x (Rev. A) | 2019-12-10 | ||||
| 应用手册 | Improving ZVS and efficiency in LLC converters | 2018-11-5 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
PFCLLCSREVM034 — UCC28056B、UCC256404 和 UCC24624 交流至隔离式 DC EVM
PFCLLCSREVM034 是一个 168W 交流/直流电源，包含转换模式功率因数校正前端以及具有同步整流功能的隔离式半桥 LLC 谐振转换器。此 EVM 可接受 90Vrms 至 264Vrms 的交流输入，并且输出电压为 12VDC，满负载输出功率为 168W。
UCC25640EVM-020 — UCC25640x 半桥 LLC 评估模块
SLUC675 — UCC25640x Design Calculator
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (DDB) | 14 | Ultra Librarian |
订购和质量
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