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UCC28050

不推荐用于新设计

符合 IEC61000-3-2 标准、温度范围为 -40°C 至 105°C、具有 15.6V/9.7V UVLO 的转换模式 PFC 控制器

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UCC28050 不推荐用于新设计
该产品会持续为现有客户提供。新设计应考虑替代产品。
open-in-new 比较替代产品
功能与比较器件相同且具有相同引脚。
UCC28810 正在供货 LED 照明电源控制器 UCC28050 Is now NRND; P2P replacement

UCC28050

不推荐用于新设计
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产品详情

Topology Boost, PFC controller Control mode TM Features Enable, Overvoltage protection, Peak current mode, Single-phase, Supports Flyback, Transition Control Mode Duty cycle (max) (%) 99
Topology Boost, PFC controller Control mode TM Features Enable, Overvoltage protection, Peak current mode, Single-phase, Supports Flyback, Transition Control Mode Duty cycle (max) (%) 99
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) PDIP (P) 8 92.5083 mm² (9.81 mm × 9.43 mm)
  • 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
  • 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.

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.

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顶层文档 类型 标题 格式选项 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 2015-5-5

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