UCC28050
- Transition Mode PFC Controller for Low Implementation Cost
- Industry Pin Compatibility With Improved Feature Set
- Improved Transient Response With Slew-Rate Comparator
- Zero Power Detect to Prevent Overvoltage Protection (OVP) During Light Load Conditions
- Accurate Internal VREF for Tight Output Regulation
- Two UVLO Options
- OVP, Open-Feedback Protection, and Enable Circuits
- ±750-mA Peak Gate Drive Current
- Low Start-Up and Operating Currents
- Lead (Pb)-Free Packages
The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard. The controllers are designed for a boost preregulator operating in transition mode (also referred to as boundary-conduction mode or critical conduction-mode operation). They feature a transconductance voltage amplifier for feedback error processing, a simple multiplier for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic, and a totem-pole driver for driving an external FET.
In the transition mode operation, the PWM circuit is self-oscillating, with the turnon being governed by an inductor zero-current detector (ZCD pin), and the turnoff being governed by the current-sense comparator. Additionally, the controller provides features such as peak current limit, default timer, overvoltage protection (OVP) and enable.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | UCC2805x, UCC3805x Transition Mode PFC Controller 数据表 (Rev. G) | PDF | HTML | 2015年 5月 5日 | ||
用户指南 | PR320 UCC28050 100-W PFC Ballast Pre-Regulator | 2004年 8月 16日 | ||||
应用手册 | UCC38050 100W Critical Conduction (PFC) Reference Design (Rev. A) | 2004年 5月 3日 |
设计和开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
UCC28051EVM — UCC28051 评估模块
UCC38050-CALC — 用于 UCC38050 转换模式 PFC 控制器的 MathCAD 计算工具
封装 | 引脚 | CAD 符号、封装和 3D 模型 |
---|---|---|
PDIP (P) | 8 | Ultra Librarian |
SOIC (D) | 8 | Ultra Librarian |
订购和质量
- 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
- 制造厂地点
- 封装厂地点