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About information presented in this cross reference

The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

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东芝PFC控制IC的优点及应用

CRM PFC控制IC:TB6819AFG

PFC控制IC除基本功能外,还具有欠压保护功能。
当MULT端子电压下降时,IC变为待机模式,并有助于降低系统的待机功耗要求。

PFC控制目的

减少谐波电流

该IC可控制交流输入电流,因为交流输入电压和电容器充电电流相似。
对于交流电源系统,负载可看成“电阻”。
而且,它可以消除高谐波电容器充电电流的冲击。

This figure shows an example of using PFC Control ICs.
(应用举例)
This figure shows an example of current waveforms before and after harmonic current reduction.
电流波形

节能

This figure shows how power reduction is achieved with PFC control.
  • 通过降低电流的谐波含量来提高功率因数。
    稳定交流输入。
  • 稳定PFC电流。
    使电源电路能够恒定供应近乎完美的正弦电流。
CRM 临界导通模式(TB6819AFG)
适用于200W以下的功率等级
相对简单的电路

开发/设计支持

下载PSpice®模型

产品 文件类型 PSpice下载 类型 特点 出版日期
TB6819A zip (49KB) 7段LED驱动IC 临界导通模式(CRM)PFC控制器IC 2015/08/25

* PSpice是Cadence Design Systems, Inc.的注册商标。

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