UCC256403
- 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 0.6 A source and 1.2 A sink capability
- Robust capacitive region (ZCS) avoidance scheme
- Over temperature, output over voltage, input under voltage protection, three levels of over current 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. It has been 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. Burst mode can also be disabled through 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. It can be used with UCC28056 or UCC28064A PFC controllers, along with UCC24624 synchronous rectifier controller to offer a complete power supply solution.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | UCC25640x LLC Resonant Controller with Ultra-Low Audible Noise and Standby Power datasheet (Rev. E) | PDF | HTML | 2021/2/19 | ||
| 應用說明 | Most Frequently Asked Questions About the UCC25640x LLC Resonant Controller | PDF | HTML | 2023/6/5 | |||
| 應用說明 | UCC25640x LLC Resonant Controller Features Brief Overview and Bring up Guideline | PDF | HTML | 2022/6/20 | |||
| 應用說明 | Improving Transient Response in LLC Converters Using Hybrid Hysteretic Control (Rev. B) | 2021/4/7 | ||||
| 技術文章 | How to reduce audible noise and power consumption at standby in your AC/DC design | PDF | HTML | 2020/4/22 | |||
| 應用說明 | Migrating to UCC25640x from UCC25630x (Rev. A) | 2019/12/10 | ||||
| 應用說明 | Improving ZVS and efficiency in LLC converters | 2018/11/5 |
設計與開發
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PFCLLCSREVM034 — 具有 UCC28056B、UCC256404 和 UCC24624 的 AC 至隔離式 DC EVM
PFCLLCSREVM034 是一款 168 W AC/DC 電源，具備轉換模式功率因數校正前端和具同步整流功能的隔離式半橋 LLC 共振轉換器。此 EVM 可在 90 Vrms 至 264 Vrms 的 AC 輸入範圍內運作，並在 168 W 全負載輸出功率下輸出 12-V DC。
UCC25640EVM-020 — UCC25640x 半橋 LLC 評估模組
SLUC675 — UCC25640x Design Calculator
PMP22083 — 單級 AC/DC LCC 共振轉換器參考設計
PMP40766 — 通用輸入、500-W CC/CV e-Bike 充電器參考設計
TIDA-010080 — 用於 5G 電信整流器的 500-W >94.5% 效率類比控制 AC/DC 參考設計
TIDA-010081 — 用於 5G 電信整流器的 >95% 效率、1 kW 類比控制 AC/DC 參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (DDB) | 14 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。