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 0.6 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
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | UCC25640x LLC Resonant Controller with Ultra-Low Audible Noise and Standby Power datasheet (Rev. E) | PDF | HTML | 2021年 2月 19日 |
| Application note | UCC25640X Benefits in LED Lighting PSU | PDF | HTML | 2024年 1月 4日 | |
| Application note | Most Frequently Asked Questions About the UCC25640x LLC Resonant Controller | PDF | HTML | 2023年 6月 5日 | |
| Application note | UCC25640x LLC Resonant Controller Features Brief Overview and Bring up Guideline | PDF | HTML | 2022年 6月 20日 | |
| Application note | Improving Transient Response in LLC Converters Using Hybrid Hysteretic Control (Rev. B) | 2021年 4月 7日 | ||
| Technical article | How to reduce audible noise and power consumption at standby in your AC/DC design | PDF | HTML | 2020年 4月 22日 | |
| Application note | Migrating to UCC25640x from UCC25630x (Rev. A) | 2019年 12月 10日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
PFCLLCSREVM034 — 具有 UCC28056B、UCC256404 和 UCC24624 的 AC 至隔離式 DC EVM
PFCLLCSREVM034 is a 168-W AC/DC supply with a transition-mode power-factor-correction front end and isolated half-bridge LLC resonant converter with synchronous rectification. This EVM accepts AC input from 90 Vrms to 264 Vrms and outputs 12-V DC with 168-W full-load output power.
UCC25640EVM-020 — UCC25640x 半橋 LLC 評估模組
| 封裝 | 引腳 | 下載 |
|---|---|---|
| SOIC (DDB) | 14 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點