UCC28633
- High-Power, Primary-Side CV/CC Regulation
- Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) Operation
- Built-In 700-V Start-Up Current Source
- Active X-Capacitor Discharge (UCC28630 and UCC28633)
- Adjustable Constant-Current (CC) Mode Limiting (except for UCC28630)
- High Gate Drive Current 1-A Source and 2-A Sink
- Low Power Modes for <30-mW System Standby
- Best-In-Class Light Load (10%) Efficiency >85%
- PSR design with no opto-coupler - can meet high CM isolation & surge requirements
- VDD OVP for independent indirect output OV under open-feedback fault conditions
- Peak-Power Mode for Transient Overload
- Shutdown Pin Interface for External NTC
- Protections: Overvoltage, Overcurrent, Over-Temperature, Overload Timer (UCC28630), AC Line UV, Brownout and Pin Protections
- Frequency Dither to Ease EMI Compliance (except the UCC28632)
- Create a Custom Design Using the UCC2863x With the WEBENCH® Power Designer
The UCC2863x targets high-power, primary-side regulated flyback converters. The ability to operate in both CCM and DCM make the device suitable for applications with a wide power range. The peak power mode allows transient peak power delivery up to 200% of nominal rating, with only a 25% peak current increase, maximizing transformer utilization.
The transformer bias winding is used to sense output voltage for regulation, and for low-loss input voltage sensing. Advanced sampling techniques allow CCM operation, and deliver excellent output voltage regulation performance for opto-coupler-less designs at power levels of 100 W and above.
A high-voltage current source enables fast and efficient start-up. Advanced light-load modes are deployed to reduce both controller and system power consumption at no load and light load. These modes enable potential system designs to meet 30-mW no-load power for power designs up to 30 W nominal, 60 W peak.
The device has been designed for ease-of-use and incorporates many features to enable a wide range of designs. Extensive protection features are included to simplify system design.
See the Device Comparison Table for details.
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 | UCC2863x, High-Power Flyback Controller with Primary-Side Regulation and Peak-Power Mode datasheet (Rev. D) | PDF | HTML | 2017/12/15 | ||
| 證書 | IEC 60065 Certification | 2019/3/15 | ||||
| 證書 | UCC28630 and UCC28633 IEC 62368 Certification | 2019/2/7 | ||||
| 應用說明 | Rapid Transient Response With UCC28633 PSR-Flyback and UCC24650 Wake-Up Monitor | 2015/2/27 |
設計與開發
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UCC28630EVM-572 — UCC28630 評估模組
德州儀器 UCC28630EVM-572 評估模組 (EVM) 是一款適合離線應用且具備 130W 暫態突波功能的 65W 一次側穩壓 (PSR) 返馳式轉換器。它旨在用於評估目的，而不是最終產品。
PMP30092 — 使用 UCC28633 的 160W 一次側穩壓返馳參考設計
PMP9643 — 適用於工業電源軌的 24V 65W (標稱值)/130W (突波) 離線返馳式電源參考設計
具有 130W 突波功能的 24V 輸出、恆定電壓/恆定電流、65W 返馳電源供應。一次側穩壓可免除回饋光耦合器，並提供降至無負載的 1% 穩壓。平均效率可達 >89%，且空載功耗 <70mW。電壓輸入範圍為 85VAC-265VAC 輸入。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 7 | 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。