公开(公告)号：US08169799B2

公开(公告)日：2012-05-01

申请号：US12469335

申请日：2009-05-20

Applicant: Toshirou Takeuchi

Inventor： Toshirou Takeuchi

IPC: H02M3/335 ,  G05F5/00

CPC classification number: H02M1/4225 ,  H02M2001/007 ,  Y02B70/126 ,  Y02P80/112

Abstract: A power factor correction circuit steps up and power-factor-corrects a rectified voltage, which has been rectified from an AC input voltage of an AC power source Vin, through an ON/OFF operation of a switching element Q1 and supplies a stepped-up output voltage to a DC-DC converter that is driven with a first pulse signal. The power factor correction circuit includes a delay circuit to receive the first pulse signal whose pulse width corresponds to an output voltage of the DC-DC converter, generate, in response to an ON pulse of the first pulse signal, a delay pulse signal whose pulse width corresponds to the rectified voltage, and synthesize the first pulse signal and the delay pulse signal into a second pulse signal. The power factor correction circuit also includes a driver to drive the switching element according to the second pulse signal.

Abstract translation: 功率因数校正电路通过开关元件Q1的导通/截止操作来升高功率因数校正已经由交流电源Vin的交流输入电压整流的整流电压，并提供升压 输出电压到由第一脉冲信号驱动的DC-DC转换器。 功率因数校正电路包括延迟电路，用于接收其脉冲宽度对应于DC-DC转换器的输出电压的第一脉冲信号，响应于第一脉冲信号的接通脉冲产生脉冲的延迟脉冲信号 宽度对应于整流电压，并将第一脉冲信号和延迟脉冲信号合成为第二脉冲信号。 功率因数校正电路还包括根据第二脉冲信号驱动开关元件的驱动器。

公开(公告)号：US07453248B2

公开(公告)日：2008-11-18

申请号：US11616493

申请日：2006-12-27

Applicant: Toshirou Takeuchi

Inventor： Toshirou Takeuchi

IPC: G05F1/00 ,  G05F5/00

CPC classification number: H02M1/4225 ,  H02M1/36 ,  H02M2001/0032 ,  Y02B70/126 ,  Y02B70/16

Abstract: A switching power supply device has a boost power converter which converts a wide range of AC input voltages into a DC voltage larger than an amplitude of the AC input voltage to supply to a DC-DC converter. The switching power supply device includes a load detection circuit, an input voltage detection circuit, and a power conversion controller for the boost power converter. The power conversion controller corrects the determination reference value in accordance with the AC input voltage detected in the input voltage detection circuit. When a light load is detected based on a comparison between the corrected determination reference value and the detection value output from the load detection circuit, the controller disables the boost power converter.

Abstract translation: 开关电源装置具有升压功率转换器，其将宽范围的交流输入电压转换成大于交流输入电压的幅度的直流电压，以提供给DC-DC转换器。 开关电源装置包括用于升压电力转换器的负载检测电路，输入电压检测电路和电力转换控制器。 电力转换控制器根据在输入电压检测电路中检测到的交流输入电压来校正判定基准值。 当基于校正的确定基准值和从负载检测电路输出的检测值之间的比较来检测轻负载时，控制器禁止升压功率转换器。

公开(公告)号：US07239533B2

公开(公告)日：2007-07-03

申请号：US10538386

申请日：2003-11-28

Applicant: Yukinari Fukumoto ,  Syohei Osaka ,  Toshirou Takeuchi

Inventor： Yukinari Fukumoto ,  Syohei Osaka ,  Toshirou Takeuchi

IPC: H02M3/335

CPC classification number: H02M3/33523

Abstract: A DC power source device comprises a MOS-FET 5 which performs the intermittent switching operation for converting DC input from a DC power supply 1 into high frequency electric power; a control circuit 9 for turning MOS-FET 5 on and off; and a rectifying smoother 6 for converting the high frequency electric power through MOS-FET 5 into a DC power output supplied to a load 50. Control circuit 9 comprises an output current controller 11 for controlling the on-off term of MOS-FET 5 to make DC output current IO through load 50 settle toward a rated value IOMAX; a shunt regulator 24 for receiving a drive current ISH supplied from rectifying smoother 6 and producing a reference voltage VR1 to regulate the rated value IOMAX of output current controller 11; and a constant current source 32 for keeping drive current ISH on a substantially constant level under the rated output current value condition and reduced output voltage condition. Constant current source 32 functions to supply shunt regulator 24 with minimum drive current ISH to maintain reference voltage VREF on a constant level under the reduced output voltage, and also to control drive current ISH to shunt regulator 24 to a necessary but minimum level under the rated value of DC output current.

Abstract translation: 直流电源装置包括：MOS-FET5，其进行用于将来自直流电源1的直流输入转换为高频电力的间歇切换动作; 用于使MOS-FET 5导通和断开的控制电路9; 以及用于将通过MOS-FET 5的高频电力转换为提供给负载50的直流电力输出的整流平滑器6.控制电路9包括：输出电流控制器11，用于将MOS-FET 5的开关项控制到 通过负载50使直流输出电流I 达到额定值I ; 用于接收从整流平滑器6提供的驱动电流I SUB的分励调节器24，并产生参考电压V SUB1以调节额定值I MAX1 / 输出电流控制器11; 以及用于在额定输出电流值条件和降低的输出电压条件下将驱动电流I SUB保持在基本上恒定的电平上的恒定电流源32。 恒定电流源32用于向分流调节器24提供最小驱动电流I 以将参考电压V REF REF保持在降低的输出电压下的恒定电平上，并且还用于控制 在直流输出电流的额定值下，将调节器24分流到必要但最小的电平。