A continuous conduction mode (CCM) boost converter with power factor correction circuit includes a rectifier which can be input with AC connection and DC output with rectifier provided by DC bus; its inductance is connected to a wire DC bus on the first and second ends, the first end is connected to the output inductor the rectifier; integrated circuit, which comprises a control circuit and the control circuit by the switch control, the integrated circuit includes a control circuit and a switch shell, the integrated circuit includes a power supply terminal and ground terminal connected with an output circuit of the converter receives a first control input, and is connected to the sensor for sensing DC the second bus current control input, the integrated circuit is further connected to the switch and even The output end of which is connected with the inductance of the second end; the boost diode, which has a first end connected to the output of the integrated circuit and has second ends; and a storage capacitor connected to the diode second end; wherein, the control circuit comprises a control circuit with single cycle integrator, integrator reset by each clock signal in the period of the clock signal, the received signal integrator is provided on the first control input as input.
【技术实现步骤摘要】
【国外来华专利技术】
技术介绍
控制转换电路的单周期控制(OCC)技术目前已为公知。在美国专利No.5278490中描述了该常规技术。在美国专利No.5886586中该技术应用于PFC(功率因数校正)升压变流器电路。在OCC技术中，就应用于PFC升压变流器电路而言，变流器的输出电压被检测，与基准电压进行比较并且被提供给积分器级，该电压如同由系统时钟设定那样在每一个周期被重置。然后在比较器中将积分器的输出与变流器中的被检测的输入电流进行比较，并且将比较器的输出用于控制脉宽调制器，脉宽调制器的输出控制升压变流器开关。该开关控制提供给负载的电流使得输入ac线电流与输入ac线电压同相，即，配有连接负载的变流器的功率因数基本上为1，因此表现出完全电阻性，由此产生最佳的功率效率和减少的谐波。在OCC技术之前，乘法器技术因被用于升压变流器电路中的PFC而知名。图1描述了一个系统级框图，其表示典型的现有技术的在一个固定频率下、连续传导模式(CCM)升压变流器技术的有源功率因数校正系统操作。该系统包括基于乘法器方法的连续传导模式控制集成电路1，系统具有分立的门驱动电路3和分立的电力开关5。这种基于电流模式...
【技术保护点】
【技术特征摘要】
【国外来华专利技术】
【专利技术属性】
技术研发人员：F·阿瑟里，R·布朗，J·亚当斯，
申请(专利权)人：国际整流器公司，
类型：发明
国别省市：
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