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1.发明申请MULTIPLIER-DIVIDER CIRCUIT AND AC-TO-DC POWER CONVERTING APPARATUS INCORPORATING THE SAME 有权多路分路器电路和AC-DC直流电源转换装置公开(公告)号：US20150070951A1
公开(公告)日：2015-03-12
申请号：US14097042
申请日：2013-12-04
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Chien-Hung Chen , Isaac Y. Chen , Yi-Wei Lee , Jyun-Che Ho
IPC: H02M7/06
CPC classification number: H02M7/06 , H02M1/4225 , Y02B70/126 , Y02P80/112
Abstract: An AC-to-DC power converting apparatus includes a power factor correction circuit generating a DC output voltage based on a rectified voltage obtained through rectifying an AC input voltage and on a PWM signal generated based on an adjustment current and a predetermined ramp signal. A multiplier-divider circuit includes: a ramp generating unit generating a ramp signal based on a clock signal and on a first detection voltage associated with the rectified voltage; a control unit generating a control signal based on the clock signal, the ramp signal, and a detection voltage generated based on the DC output voltage; and an output unit generating an adjustment signal based on an input signal associated with the rectified voltage and the control signal.
Abstract translation: AC-DC电力转换装置包括功率因数校正电路，该功率因数校正电路基于通过对AC输入电压进行整流获得的整流电压和基于调整电流和预定斜坡信号产生的PWM信号产生DC输出电压。 乘法器分频器电路包括：斜坡发生单元，其基于时钟信号和与整流电压相关联的第一检测电压产生斜坡信号; 控制单元，基于所述时钟信号，所述斜坡信号和基于所述直流输出电压生成的检测电压来生成控制信号; 以及输出单元，其基于与整流电压和控制信号相关联的输入信号生成调整信号。
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公开(公告)号：US20150117072A1
公开(公告)日：2015-04-30
申请号：US14526187
申请日：2014-10-28
Applicant: Richtek Technology Corp.
Inventor： Tong-Cheng Jao , Yi-Wei Lee , Isaac Y. Chen
IPC: H02M3/335
CPC classification number: H02M1/36 , H02M3/33507 , H02M3/33523 , H02M3/33553
Abstract: A soft-start switching power converter includes a voltage converting circuit and a soft-start circuit. The voltage converting circuit includes a transformer, and a first switch which includes a first terminal connected to the transformer, a second terminal providing a trigger signal, and a control terminal receiving a control signal, and which is controlled to switch between conduction and nonconduction, such that the transformer generates a feedback voltage. The soft-start circuit receives the trigger signal, generates the control signal according to the trigger signal, and determines whether or not to clamp the control signal at a preset voltage level based on the trigger signal.
Abstract translation: 软启动开关电源转换器包括电压转换电路和软启动电路。 电压转换电路包括变压器和第一开关，其包括连接到变压器的第一端子，提供触发信号的第二端子和接收控制信号的控制端子，并且被控制为在导通和非导通之间切换， 使得变压器产生反馈电压。 软启动电路接收触发信号，根据触发信号产生控制信号，并根据触发信号确定是否将控制信号钳位在预设电压电平。
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Patent Agency Ranking
公开(公告)号：US09258857B2
公开(公告)日：2016-02-09
申请号：US14334574
申请日：2014-07-17
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Tong-Cheng Jao , Yi-Wei Lee , Isaac Y. Chen
CPC classification number: H05B33/0815 , H02M7/2176 , H02M2001/0045 , H05B33/0812 , Y02B20/343 , Y02B20/345 , Y02B20/346 , Y02B20/347
Abstract: A light emitting system includes a series connection of a light emitting unit and a variable current source, and a voltage conversion device that includes a rectifier circuit and an output circuit. The rectifier circuit rectifies an AC voltage to generate a rectified voltage across a first rectifier output coupled to one end of the series connection of the light emitting unit and the variable current source, and a second rectifier output. The output circuit is coupled between the second rectifier output and another end of the series connection of the light emitting unit and the variable current source, and is configured to generate a direct-current (DC) output voltage.
Abstract translation: 发光系统包括发光单元和可变电流源的串联连接，以及包括整流电路和输出电路的电压转换装置。 整流电路对AC电压进行整流，以在耦合到发光单元和可变电流源的串联连接的一端的第一整流器输出和第二整流器输出之间产生整流电压。 输出电路耦合在第二整流器输出和发光单元与可变电流源的串联连接的另一端之间，并被配置为产生直流（DC）输出电压。
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4.发明授权Multiplier-divider circuit and AC-to-DC power converting apparatus incorporating the same 有权并联电路的乘法器分频器电路和AC-DC电力转换装置公开(公告)号：US09112404B2
公开(公告)日：2015-08-18
申请号：US14097042
申请日：2013-12-04
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Chien-Hung Chen , Isaac Y. Chen , Yi-Wei Lee , Jyun-Che Ho
CPC classification number: H02M7/06 , H02M1/4225 , Y02B70/126 , Y02P80/112
Abstract: An AC-to-DC power converting apparatus includes a power factor correction circuit generating a DC output voltage based on a rectified voltage obtained through rectifying an AC input voltage and on a PWM signal generated based on an adjustment current and a predetermined ramp signal. A multiplier-divider circuit includes: a ramp generating unit generating a ramp signal based on a clock signal and on a first detection voltage associated with the rectified voltage; a control unit generating a control signal based on the clock signal, the ramp signal, and a detection voltage generated based on the DC output voltage; and an output unit generating an adjustment signal based on an input signal associated with the rectified voltage and the control signal.
Abstract translation: AC-DC电力转换装置包括功率因数校正电路，该功率因数校正电路基于通过对AC输入电压进行整流获得的整流电压和基于调整电流和预定斜坡信号产生的PWM信号产生DC输出电压。 乘法器分频器电路包括：斜坡发生单元，其基于时钟信号和与整流电压相关联的第一检测电压产生斜坡信号; 控制单元，基于所述时钟信号，所述斜坡信号和基于所述直流输出电压生成的检测电压来生成控制信号; 以及输出单元，其基于与整流电压和控制信号相关联的输入信号生成调整信号。
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公开(公告)号：US09647531B2
公开(公告)日：2017-05-09
申请号：US14526187
申请日：2014-10-28
Applicant: Richtek Technology Corp.
Inventor： Tong-Cheng Jao , Yi-Wei Lee , Isaac Y. Chen
CPC classification number: H02M1/36 , H02M3/33507 , H02M3/33523 , H02M3/33553
Abstract: A soft-start switching power converter includes a voltage converting circuit and a soft-start circuit. The voltage converting circuit includes a transformer, and a first switch which includes a first terminal connected to the transformer, a second terminal providing a trigger signal, and a control terminal receiving a control signal, and which is controlled to switch between conduction and nonconduction, such that the transformer generates a feedback voltage. The soft-start circuit receives the trigger signal, generates the control signal according to the trigger signal, and determines whether or not to clamp the control signal at a preset voltage level based on the trigger signal.
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公开(公告)号：US09263940B2
公开(公告)日：2016-02-16
申请号：US14075717
申请日：2013-11-08
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Chien-Hung Chen , Isaac Y. Chen , Yi-Wei Lee , Jyun-Che Ho
CPC classification number: H02M1/4225 , Y02B70/126 , Y02P80/112
Abstract: A power converter includes a rectifier and a power factor corrector. The rectifier is to be coupled to an alternating current power source and is configured to output a rectified signal. The power factor corrector includes a correcting circuit and a control circuit. The correcting circuit receives the rectified signal and is configured to generate an output voltage based on the rectified signal and a driving signal. The control circuit is configured to generate a first to-be-compared signal based on the rectified signal, to generate a second to-be-compared signal based on the output voltage, to compare the first and second to-be-compared signals, and to generate the driving signal based on a result of comparison performed thereby.
Abstract translation: 功率转换器包括整流器和功率因数校正器。 整流器被耦合到交流电源，并且被配置为输出整流信号。 功率因数校正器包括校正电路和控制电路。 校正电路接收经整流的信号，并且被配置为基于整流信号和驱动信号产生输出电压。 控制电路被配置为基于整流信号产生第一待比较信号，以基于输出电压产生第二待比较信号，以比较第一和第二待比较信号， 并且基于由此执行的比较结果来产生驱动信号。
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公开(公告)号：US20140340949A1
公开(公告)日：2014-11-20
申请号：US14075717
申请日：2013-11-08
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Chien-Hung Chen , Isaac Y. Chen , Yi-Wei Lee , Jyun-Che Ho
IPC: H02M7/217
CPC classification number: H02M1/4225 , Y02B70/126 , Y02P80/112
Abstract: A power converter includes a rectifier and a power factor corrector. The rectifier is to be coupled to an alternating current power source and is configured to output a rectified signal. The power factor corrector includes a correcting circuit and a control circuit. The correcting circuit receives the rectified signal and is configured to generate an output voltage based on the rectified signal and a driving signal. The control circuit is configured to generate a first to-be-compared signal based on the rectified signal, to generate a second to-be-compared signal based on the output voltage, to compare the first and second to-be-compared signals, and to generate the driving signal based on a result of comparison performed thereby.
Abstract translation: 功率转换器包括整流器和功率因数校正器。 整流器被耦合到交流电源，并且被配置为输出整流信号。 功率因数校正器包括校正电路和控制电路。 校正电路接收经整流的信号，并且被配置为基于整流信号和驱动信号产生输出电压。 控制电路被配置为基于整流信号产生第一待比较信号，以基于输出电压产生第二待比较信号，以比较第一和第二待比较信号， 并且基于由此执行的比较结果来产生驱动信号。
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