A power factor correction (PFC) circuit is added to a power supply circuit to bring its power factor close to 1.0 or reduce harmonics. This application note discusses the basic topologies of the PFC circuits and their operations.

ST power factor correction controllers operate in transition mode (TM) and continuous current mode (CCM), and are suitable for a wide-range-mains operation.

Infineon’s extensive portfolio of AC-DC PWM controllers includes PWM-FF/QR Flyback converter integrated circuits and advanced flyback converters, PFC-DCM/CCM ICs, Synchronous Rectification ICs, and combo ICs.

2022年2月24日 · pfc是功率因数校正电路，在充电器中用于将整流后的电压升压，再通过电容滤波为反激或者acf或llc初级供电。 一般来说，75W以上的充电器都需要增加PFC电路，这样做可以解决两个痛点；第一是为了照顾低压输入而采用较大容量的初级滤波电容，会占据充电器中 ...

ICE3PCS01G is the new 14-pin wide input range (85V AC to 265V AC ) controller IC for active CCM power factor correction converter. Compared to the 1 st and 2 nd generation of ICE1PCS0x and ICE2PCS0x, the 3 rd generation PFC have the lowest internal reference trimmed at 2.5V and integrated digital control voltage loop.

2024年11月25日 · mps 提供一系列的先进的 pfc+llc 集合数字控制芯片. hr1211 的 pfc 部分采用 ccm 控制方式，电感电流在重载情况下处于连续状态，并且开关频率可以通过数字接口

The L4984D is a current-mode PFC controller operating with line-modulated fixed-off-time (LM-FOT) control. A proprietary LM-FOT modulator allows fixed-frequency operation for boost PFC converters as long as they are operated in CCM (continuous conduction mode).

提升满足电力需求的能力本应用笔记主要围绕基于数字信号控制器(Digital Signal Controller, DSC )进行功率因数校正(Power Factor Correction, PFC)的研究、设计和具体实现。 其中对基于16 位定点dsPIC® DSC的功率因数校正软件实现进行了详细介绍。 另外,还包括误差补偿器的离散化和一个设计示例。 作为结论,本文给出了一些实验室测试结果和波形以验证PFC转换器数字实现的有效性。

TI offers variety of PFC solutions and the most common topology is the boost, as shown in Figure 3. The PFC stage resides between the DC/DC and rectified AC line. Because the boost inductor inherently limits the dI/dt of the input current, it makes the topology better equipped to achieve low input current distortion. Figure 3.

8-Pin Continuous Conduction Mode (CCM) PFC Controller • 8-pin Solution Without Sensing Line Voltage The UCC28019 8-pin active Power Factor Correction Reduces External Components (PFC) controller uses the boost topology operating in