基本信息:
- 专利标题： LOW SWITCHING FREQUENCY POWER FACTOR CORRECTION CIRCUIT
- 专利标题（中）：低开关频率功率因数校正电路
- 申请号：PCT/US2005/020005 申请日：2005-06-07
- 公开(公告)号：WO2005120202A2 公开(公告)日：2005-12-22
- 发明人： BOCCHIOLA, Cesare , GRASSO, Massimo , TAKAHASHI, Toshio
- 申请人： INTERNATIONAL RECTIFIER CORPORATION , BOCCHIOLA, Cesare , GRASSO, Massimo , TAKAHASHI, Toshio
- 申请人地址： 233 Kansas Street, El Segundo, California 90245 US
- 专利权人： INTERNATIONAL RECTIFIER CORPORATION,BOCCHIOLA, Cesare,GRASSO, Massimo,TAKAHASHI, Toshio
- 当前专利权人： INTERNATIONAL RECTIFIER CORPORATION,BOCCHIOLA, Cesare,GRASSO, Massimo,TAKAHASHI, Toshio
- 当前专利权人地址： 233 Kansas Street, El Segundo, California 90245 US
- 代理机构： WEINER, Samuel, H.
- 优先权： US60/578,010 20040607; US60/638,125 2004012022; US60/642,826 200501011; US11/145,683 20050606
- 主分类号： H02M1/42
- IPC分类号： H02M1/42
摘要：
A power factor correction circuit for driving a switch of a boost type converter circuit having an AC line frequency input, comprising a sense circuit for sensing and comparing the output voltage of the boost type converter circuit to a reference voltage, a circuit responsive to the output of the sense circuit for providing a drive signal for driving the switch, wherein the drive signal comprises a pulsed signal comprising a pulse grouping during each half cycle of the AC line frequency comprising at least one pulse wherein the number of pulses and frequency of the pulses of the pulse grouping changes with the output of the sense circuit up to a threshold value with the pulse width of the pulses being substantially constant; and when the output of the sense circuit has reached the threshold value, the pulse width of the pulses of the pulse grouping are varied in accordance with the output of the sense circuit.
摘要（中）：
一种用于驱动具有AC线路频率输入的升压型转换器电路的开关的功率因数校正电路，包括用于感测和比较升压型转换器电路的输出电压与参考电压的感测电路，响应于输出的电路 用于提供用于驱动开关的驱动信号的感测电路，其中所述驱动信号包括脉冲信号，所述脉冲信号包括在包括至少一个脉冲的每个半周期期间的脉冲分组，其中脉冲数和脉冲频率 脉冲组合的脉冲宽度随着脉冲宽度基本恒定而随着感测电路的输出而变化到阈值， 并且当感测电路的输出达到阈值时，脉冲组合的脉冲的脉冲宽度根据感测电路的输出而变化。