计算工具
SLUC114 — UCC28070 Excel Applications Design Tool
UCC28070x Excel Applications Design Tool
UCC28070
- Interleaved Average Current-Mode PWM Control
With Inherent Current Matching - Advanced Current Synthesizer Current Sensing
for Superior Efficiency - Highly-Linear Multiplier Output With Internal
Quantized Voltage Feed-Forward Correction for
Near-Unity PF - Programmable Frequency from 30 kHz to 300 kHz
- Programmable Maximum Duty-Cycle Clamp
- Programmable Frequency-Dithering Rate and
Magnitude for Enhanced EMI Reduction- Magnitude: 3 kHz to 30 kHz
- Rate: Up to 30 kHz
- External-Clock Synchronization Capability
- Enhanced Load and Line Transient Response
through Voltage Amplifier Output Slew-Rate
Correction - Programmable Peak Current Limiting
- Bias-Supply UVLO, Overvoltage Protection, Open-
Loop Detection, and PFC-Enable Monitoring - External PFC-Disable Interface
- Open-Circuit Protection on VSENSE and VINAC
pins - Programmable Soft-Start
The UCC28070 is an advanced power factor correction (PFC) device that integrates two pulse-width modulators (PWMs) operating 180° out of phase. This interleaved PWM operation generates substantial reduction in the input and output ripple currents, allowing the conducted-EMI filtering to become easier and less expensive. A significantly improved multiplier design provides a shared current reference to two independent current amplifiers that ensures matched average-current mode control in both PWM outputs while maintaining a stable, low-distortion, sinusoidal input-line current.
The UCC28070 device contains multiple innovations including current synthesis and quantized voltage feed-forward to promote performance enhancements in PF, efficiency, THD, and transient response. Features including frequency dithering, clock synchronization, and slew rate enhancement further expand the potential performance enhancements.
The UCC28070 device also contains a variety of protection features including output-overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection.
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评估板
UCC28070EVM — UCC28070 评估模块
UCC28070 评估模块是使用平均电流模式控制技术以达到临近单位功率因数的 300W、二相交错 PFC 前置稳压器。前置稳压器设计为在通用 AC 线路输入电压为 85V 至 265V 的范围内运行，并提供 390V 稳压 DC 输出。此评估模块演示了 TI 的交错 PFC 控制技术。
用户指南: PDF
仿真模型
UCC28070 TINA-TI Start-up Simulation Using Average Model
SLUM328.TSC (813 KB) - TINA-TI Reference Design
参考设计
PMP40261 — 800W 高效无桥功率因数校正 (PFC) 参考设计
该参考设计是一款无桥 PFC 电路，使用 UCC28070 交错式 CCM PFC 控制器，通过通用交流输入提供 390V/2A 输出。该电路使用平均电流模式 PWM 控制和先进的内部电流合成器进行电流检测。在 115VAC/60Hz 输入下可实现 96.57% 的峰值效率，在 230VAC/50Hz 输入下可实现 98.07% 的峰值效率。在 115VAC 和 230VAC 输入下，满负载时的功率因数高于 0.994。低高度 (<25mm) 设计使该电路适用于电视和电器应用。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (DW) | 20 | Ultra Librarian |
| TSSOP (PW) | 20 | Ultra Librarian |
订购和质量
包含信息：
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
包含信息：
- 制造厂地点
- 封装厂地点
