UCC28070A
- Interleaved average current-mode PWM control with inherent current matching
- Advanced current-synthesizer current sensing for superior efficiency
- Synchronization capability to external clock
- Highly-linear multiplier output with internal quantized voltage feed-forward for near-unity PF
- Enhanced transient response through slew-rate correction of voltage amplifier output current
- Extended-range programmable frequency
- UCC28070A: 10kHz to 300kHz
- UCC28070: 30kHz to 300kHz
- Programmable maximum duty-cycle clamp
- Programmable frequency-dithering rate and magnitude (up to 30kHz) for EMI reduction
- Programmable soft-start
- Programmable peak current limiting
- External PFC-disable interface
- Protections: bias-supply UVLO, output overvoltage, open‑loop detection, open-circuit detection on VSENSE and VINAC, and PFC-enable monitoring
The UCC28070A and UCC28070 are advanced power factor correction (PFC) controllers that each integrate two pulse-width modulators (PWMs) operating interleaved by 180° in CCM boost-mode. Both devices can switch at frequencies up to 300kHz, while the UCC28070A device is capable of operating down to 10kHz for IGBT power-switch based PFC converters in high-power applications. The minimum operating frequency of the UCC28070 device is limited to 30kHz.
The 180° out-of-phase interleaved operation generates substantial reduction in input and output ripple currents and conducted-EMI filtering becomes easier and less expensive. All the other features and benefits of the UCC28070A and UCC28070 devices are the same.
Both devices feature multiple innovations including current synthesis and quantized voltage feedforward to promote performance enhancements in PF, efficiency, THD, and transient response. In addition, frequency dithering, clock synchronization, and slew-rate enhancement further expand the potential for performance improvements. Also, protection features include output overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection.
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 | UCC28070 and UCC28070A Extended Frequency Range (10kHz to 300kHz), Interleaving Continuous Conduction Mode PFC Controller datasheet (Rev. C) | PDF | HTML | 2025/7/28 | ||
| Product overview | PFC Controller Step-by-Step Selection Guide | PDF | HTML | 2023/2/28 | |||
| 應用說明 | UCC2806x PCB Layout Guideline for PFC | 2019/4/29 | ||||
| 白皮書 | Advancing Power Supply Solutions Through the Promise of GaN | 2015/2/24 | ||||
| 更多文件說明 | Design Review of a Full-Featured 350-W Offline Power Converter | 2013/10/29 | ||||
| 應用說明 | UCC28070 Implement Bridgeless PFC Pre-Regulator Design | 2009/6/18 | ||||
| 使用指南 | UCC28070, 300-W Interleaved PFC Pre-Regulator (Rev. B) | 2009/5/12 |
設計與開發
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UCC28070EVM — UCC28070 評估模組
SLUC114 — UCC28070 Excel Applications Design Tool
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TSSOP (PW) | 20 | 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。