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参数

Device type Single-phase PFC Control method TM Operating supply (Max) (V) 18 Operating supply current (mA) 4 UVLO thresholds on/off (V) 15.8/9.7 Features OVP, Supports Flyback, Transition Mode Control Rating Catalog Operating temperature range (C) -40 to 85 open-in-new 查找其它 功率因数校正(PFC)控制器

封装|引脚|尺寸

PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new 查找其它 功率因数校正(PFC)控制器

特性

  • 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
open-in-new 查找其它 功率因数校正(PFC)控制器

描述

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.

open-in-new 查找其它 功率因数校正(PFC)控制器
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技术文档

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类型 标题 下载最新的英文版本 发布
* 数据表 UCC2805x, UCC3805x Transition Mode PFC Controller 数据表 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 2004年 5月 3日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
UCC28051 评估模块
UCC28051EVM
document-generic 用户指南
$99.00
说明
UCC28051 Evaluation Module is a 100-W offline AC-DC voltage converter with power factor correction (PFC). The power module was designed to show how the UCC28051 could be configured in an off-line power factor corrected preregulator. The module was designed to operate over a universal input range of (...)

设计工具和仿真

计算工具 下载
用于 UCC38050 转换模式 PFC 控制器的 MathCAD 计算工具
UCC38050-CALC MathCAD application design tool for use with the UCC38050.

参考设计

参考设计 下载
通用交流输入、24V/1A PFC 反激式参考设计
PMP11155 — 基于 UCC28050 的此参考设计在单级中提供隔离和功率因数校正。该电路建立在 76mm x 50mm 的双层电路板上。测试报告记录了效率、功率因数、热、EMI 扰等方面的性能。
document-generic 原理图 document-generic 用户指南
参考设计 下载
具有同步整流的 90VAC-300VAC 输入、5V/10W 输出 PFC 反向
PMP6570 — PMP6570 参考设计使用 UCC28050 转换模式 PFC 控制器以通过通用 90VAC 至 300VAC 输入生成隔离式 5V/2A 输出。此设计组合了功率因数校正和单极输出调节。此外,UCC24610 用于在隔离边界的二次侧上控制同步整流器,以提高效率。

CAD/CAE 符号

封装 引脚 下载
PDIP (P) 8 视图选项
SOIC (D) 8 视图选项

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