UCC3813-1
- 100µA typical starting supply current
- 500µA typical operating supply current
- Operation to 1MHz
- Internal soft start
- Internal fault soft start
- Internal leading-edge blanking of the current-sense signal
- 1A totem-pole output
- 70ns typical response from current-sense to gate-drive output
- 1.5% tolerance voltage reference
- Same pinout as the UCC3802 device, UC3842 device, and UC3842A device families
The UCC3813-x device family of high-speed, low-power integrated circuits contains all of the control and drive components required for off-line and DC-to-DC fixed-frequency current-mode switching power supplies with minimal parts count.
These devices have the same pin configuration as the UC384x device family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.
The UCC3813-x device family offers a variety of package options, temperature-range options, choice of maximum duty cycle, and choice of critical voltage levels. Devices with lower reference voltage such as the UCC3813-3 and UCC3813-5 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC3813-2 device and UCC3813-4 device make these ideal choices for use in off-line power supplies.
The UCC2813-x device series is specified for operation from –40°C to 85°C and the UCC3813-x device series is specified for operation from 0°C to 70°C.
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 | UCCx813-x Low-Power Economy BiCMOS Current-Mode PWM datasheet (Rev. G) | PDF | HTML | 2025/4/25 | ||
| 應用說明 | Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A) | PDF | HTML | 2021/6/11 | |||
| 應用說明 | Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) | 2019/3/12 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 使用指南 | UCC3813 Dual Output Boost Converter | 2003/10/9 | ||||
| 應用說明 | UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers | 2002/2/7 | ||||
| 應用說明 | Differences Between the UCC3813 and the UCC3800 PWM Families | 2000/6/2 | ||||
| 應用說明 | U-133A UCC3800/1/2/3/4/5 BiCMOS Current Mode Control IC's | 1999/9/5 | ||||
| 應用說明 | DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode | 1999/9/5 | ||||
| 應用說明 | DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802 | 1999/9/5 | ||||
| 應用說明 | U-111, Practical Considerations in Current Mode Power Supplies | 1999/9/5 |
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)。
PMP21529 — 4 開關降壓-升壓雙向 DC-DC 轉換器參考設計
此 DC-DC 電源轉換器參考設計展示了創新的電池備援應用方式。在正常運作期間，轉換器可當成電池充電器使用，並採用相容於鋰離子電池的 CC-CV-TOPG 充電演算法。DC 匯流排電源中斷時，轉換器會立即變更為備用操作，以為系統順暢供電。當 DC 匯流排電源恢復時，轉換器會自動切換回電池充電模式。電池電壓可能高於或低於 DC 匯流排電壓。視 DC 匯流排和電池電壓而定，轉換器可做為同步降壓或同步升壓轉換器運作，其中只有兩個開關進行切換，減少切換損耗並達到高效率。只有在 DC 匯流排和電池電壓彼此接近時，轉換器才會以降壓升壓轉換器的方式運作。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| TSSOP (PW) | 8 | 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。