UCC28710
- < 10-mW No-Load Power
- Primary-Side Regulation (PSR) Eliminates Opto-Coupler
- ±5% Voltage and Current Regulation Across Line and Load
- 700-V Start-Up Switch
- 100-kHz Maximum Switching Frequency Enables High-Power Density Charger Designs
- Resonant Valley-Switching Operation for Highest Overall Efficiency
- Frequency Jitter to Ease EMI Compliance
- Wide VDD Range Allows Small Bias Capacitor
- Clamped Gate-Drive Output for MOSFET
- Overvoltage, Low-Line, and Overcurrent Protection Functions
- Programmable Cable Compensation (UCC28710)
- NTC Resistor Interface (UCC28711, UCC28712 and UCC28713) with Fixed Cable Compensation Options
- SOIC-7 Package
- Create a Custom Design Using the UCC28710 With the WEBENCH® Power Designer
The UCC2871x family of flyback power supply controllers provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.
An internal 700-V start-up switch, dynamically-controlled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response.
Control algorithms in the UCC28710 family allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.
The controllers have a maximum switching frequency of 100 kHz and always maintain control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28710 allow the cable compensation to be programmed. The UCC28711, UCC28712 and UCC28713 devices allow remote temperature sensing using a negative temperature coefficient (NTC) resistor while providing fixed cable-compensation levels.
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 | UCC2871x Constant-Voltage, Constant-Current Controller With Primary-Side Regulation datasheet (Rev. C) | PDF | HTML | 2017/6/30 | ||
| 應用說明 | Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips | PDF | HTML | 2021/8/31 | |||
| 更多文件說明 | PCB layout guidelines to optimize power supply performance | 2021/3/23 | ||||
| 白皮書 | Power Electronics in Motor Drives: Where is it? (Rev. A) | 2019/10/1 | ||||
| 應用說明 | Minimize Standby Consumption for UCC287XX Family | 2019/8/1 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Troubleshooting TI PSR controllers | 2016/10/3 | ||||
| 白皮書 | Control Challenges for Low Power AC/DC Converters | 2015/10/2 | ||||
| 白皮書 | Control Challenges for Low Power AC/DC Converters (PPT) | 2015/10/2 | ||||
| 技術文章 | Designing multiple output converters with primary side sensing | PDF | HTML | 2015/8/4 | |||
| 更多文件說明 | Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter | 2013/10/29 |
設計與開發
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UCC24630EVM-636 — UCC24630 65W AC/DC 變壓器
這是一款高效率 65W AC/DC 設計，採用 UCC24630 同步整流控制器，可實現通用輸入（85Vac 至 265Vac）至 19.5V @3.33A 輸出，超過 CoC-5 Tier2，以及外部電源供應器的 DOE Level VI 性能要求。
UCC28711EVM-160 — UCC28711 評估模組
UCC28720EVM-212 — 適用於 USB 離線適配器的 UCC28720EVM-212 5W 評估模組
UCC28740EVM-525 — UCC28740EVM-525 評估模組
UCC28740EVM-525 評估模組是一款 10W 離線不連續模式 (DCM) 返馳式轉換器，可提供定電壓 (CV) 和定電流 (CC) 輸出穩壓。其採用光學耦合器回饋以進行嚴格的電壓調節，改善對大負載步進的暫態響應能力與一次側控制技術，實現精確的定電流調節。UCC28740 在控制演算法中，運用頻率調變、一次側峰值電流調變、波谷切換及波谷略過，使整個操作範圍的效率達到最大值。
SLUC590 — UCC2871x Calculator
許多 TI 參考設計包含 UCC28710
使用我們的參考設計選擇工具，以檢視並找出最適合您的應用和參數的設計。
| 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。