TI公司，TI官网，TI代理商
TI(德州仪器)|TI产品型号搜索：
专营TI（德州仪器）元器件，强大的现货交付能力，解决您的采购难题
全流程提供TI（德州仪器）现货供应链服务
当前位置：TI代理 > > TI芯片 >> UCC28221
UCC28221技术文档下载：
UCC28221技术文档产品手册下载
UCC28221 - 产品图解：
UCC28221-具有可编程最大占空比的双路交错 PWM 控制器
TI芯片：
承诺原装正品
专营TI德州仪器，真正优化您的供应链
TI产品 - UCC28221介绍

UCC28221 - 具有可编程最大占空比的双路交错 PWM 控制器

UCC28221是TI德州仪器公司的一款PWM与谐振控制器产品，UCC28221是具有可编程最大占空比的双路交错 PWM 控制器，本站介绍了UCC28221的封装应用图解、特点和优点、功能等，并给出了与UCC28221相关的TI元器件型号供参考。

UCC28221 - 具有可编程最大占空比的双路交错 PWM 控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品描述

The UCC28220 and UCC28221 are a family of BiCMOS interleaved dual channel PWM controllers. Peak current mode control is used to ensure current sharing between the two channels. A precise maximum duty cycle clamp can be set to any value between 60% and 90% duty cycle per channel.

UCC28220 has an UVLO turn-on threshold of 10 V for use in 12-V supplies while UCC28221 has a turn-on threshold of 13 V for systems needing wider UVLO hysteresis. Both have 8-V turn-off thresholds.

Additional features include a programmable internal slope compensation with a special circuit which is used to ensure exactly the same slope is added to each channel and a high voltage 110-V internal JFET for easier startup for the wider hysteresis UCC28221 version.

The UCC28220 is available in both 16-pin SOIC and low-profile TSSOP packages. The UCC28221 also comes in 16-pin SOIC package and a slightly larger 20-pin TSSOP package to allow for high voltage pin spacing to meet UL1950 creepage clearance safety requirements.

产品特性

  • 2-MHz High Frequency Oscillator with 1-MHz Operation Per Channel
  • Matched Internal Slope Compensation Circuits
  • Programmable Maximum Duty Cycle Clamp 60% to 90% Per Channel
  • Peak Current Mode Control with Cycle-by-Cycle Current Limit
  • Current Sense Discharge Transistor for Improved Noise Immunity
  • Accurate Line Under and Over-Voltage Sense with Programmable Hysteresis
  • Opto-Coupler Interface
  • 110-V Internal Start-Up JFET (UCC28221)
  • Operates from 12-V Supply (UCC28220)
  • Programmable Soft-Start
  • APPLICATIONS
    • High Output Current (50-A to 100-A) Converters
    • Maximum Power Density Designs
    • High Efficiency 48-V Input with Low Output Ripple Converters
    • High Power Offline, Telecom and Datacom Power Supplies

下面可能是您感兴趣的TI德州仪器公司PWM与谐振控制器元器件
节约时间成本，提高采购效率，TI官网授权代理
TI公司|TI德州仪器|德州仪器TI公司代理商|TI芯片代理商
TI公司产品现货专家，订购TI公司产品不限最低起订量，TI芯片大陆现货即时发货，香港库存3-5天发货，海外库存7-10天发货
寻找全球TI代理商现货货源 - TI公司（德州仪器）电子元件在线订购