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公开(公告)号：US11829314B2
公开(公告)日：2023-11-28
申请号：US17867665
申请日：2022-07-18
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Tzu-Hsuan Tseng , Tzu-Hsien Chuang , Sheng-Chun Lin , Hao-Chun Yang , Chien-Chih Huang , Heng-Min Chang , Tsung-Jung Wu , Yen-Tung Hung
IPC: G06F13/40
CPC classification number: G06F13/4072 , G06F13/4022
Abstract: A charging system includes a source terminal and a sink terminal. The control method of the charging system includes transmitting a bus voltage by the source terminal, determining whether the sink terminal has entered a sink attached state when the sink terminal receives the bus voltage, enabling a message transceiver of the sink terminal if the sink terminal has entered the sink attached state, transmitting a source message to the transceiver of the sink terminal by the source terminal, transmitting a request message to the source terminal by the message transceiver of the sink terminal while the source terminal transmits the source message, and continuing to enable a communication function for communicating with the sink terminal and continuing to transmit the bus voltage to the sink terminal by the source terminal when the source terminal receives the request message.
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公开(公告)号：US11764682B2
公开(公告)日：2023-09-19
申请号：US17684393
申请日：2022-03-01
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Yung-Jen Chen
CPC classification number: H02M3/1586 , H02M1/0003 , H02M1/0016 , H02M1/32 , H02M3/158 , H02M3/1582
Abstract: A buck converter includes a quick response circuit, a compensator coupled to an output node, an interleaving logic circuit coupled to the compensator, a plurality of on-time generators, a plurality of OR gates coupled to the corresponding on-time generator, a plurality of power stages coupled to the corresponding OR gates, a plurality of inductors and an output capacitor. Each on-time generator is coupled to the interleaving logic circuit, an input node and the output node. The quick response circuit includes a voltage droop sensor coupled to the output node, a load frequency sensor coupled to the output node, a quick response signal generator coupled to the voltage droop sensor, a maximum quick response signal generator coupled to the voltage droop sensor and the load frequency sensor, an AND gate coupled to the quick response signal generator, the maximum quick response signal generator and the plurality of OR gates.
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公开(公告)号：US11716020B2
公开(公告)日：2023-08-01
申请号：US17511607
申请日：2021-10-27
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Kuo-Chi Liu , Ta-Yung Yang , Chung-Lung Pai
CPC classification number: H02M3/07 , H02M1/0012 , H02M3/01
Abstract: A DC-DC power conversion system includes a resonant switched-capacitor converter and a controller. The resonant switched-capacitor converter is switched between a first state and a second state to generate an output voltage, and includes an input terminal, a resonant tank, an output capacitor, a first set of switches and a second set of switches. The input terminal is used to receive an input voltage. The output capacitor is used to generate the output voltage. The first set of switches is turned on in the first state and turned off in the second state according to a first control signal. The second set of switches is turned on in the second state and turned off in the first state according to a second control signal. The controller adjusts the first control signal and the second control signal according to the output voltage.
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公开(公告)号：US20220352816A1
公开(公告)日：2022-11-03
申请号：US17511607
申请日：2021-10-27
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Kuo-Chi Liu , Ta-Yung Yang , Chung-Lung Pai
Abstract: A DC-DC power conversion system includes a resonant switched-capacitor converter and a controller. The resonant switched-capacitor converter is switched between a first state and a second state to generate an output voltage, and includes an input terminal, a resonant tank, an output capacitor, a first set of switches and a second set of switches. The input terminal is used to receive an input voltage. The output capacitor is used to generate the output voltage. The first set of switches is turned on in the first state and turned off in the second state according to a first control signal. The second set of switches is turned on in the second state and turned off in the first state according to a second control signal. The controller adjusts the first control signal and the second control signal according to the output voltage.
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公开(公告)号：US20160043627A1
公开(公告)日：2016-02-11
申请号：US14529111
申请日：2014-10-30
Applicant: RICHTEK TECHNOLOGY CORP
Inventor： An-Tung Chen , Li-Wen Fang , Chih-Hao Yang
CPC classification number: H02M3/1584 , H02M2001/0045
Abstract: An over-voltage protection circuit is applied to a switching voltage converting circuit. The switching voltage converting circuit manipulates an upper bridge power switch in the circuit, so as to convert an input voltage into an output voltage by an inductor. A channel of the upper bridge power switch and the inductor are coupled to a phase end. The over-voltage protection circuit includes: a comparator, coupled to the switching voltage converting circuit, wherein when a voltage of the phase end is higher than a voltage limiting threshold, an output end of the comparator outputs a first voltage level; and a pulse width detection unit, coupled to the output end of the comparator, wherein when the output end of the comparator remains the first voltage level for a time period longer than a protection period, the pulse width detection unit outputs an over-voltage protection activation signal.
Abstract translation: 过电压保护电路被施加到开关电压转换电路。 开关电压转换电路操纵电路中的上桥式电源开关，以便通过电感将输入电压转换为输出电压。 上桥电源开关和电感器的通道耦合到相端。 所述过电压保护电路包括：比较器，耦合到所述开关电压转换电路，其中当所述相位端的电压高于电压限制阈值时，所述比较器的输出端输出第一电压电平; 以及脉冲宽度检测单元，其连接到所述比较器的输出端，其中当所述比较器的输出端在比保护周期长的时间段内保持第一电压电平时，所述脉冲宽度检测单元输出过电压保护 激活信号。
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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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67.发明授权Rectifying-and-modulating circuit and wireless power receiver incorporating the same 有权整流调制电路和包含该电路的无线电源接收器公开(公告)号：US09225196B2
公开(公告)日：2015-12-29
申请号：US13970331
申请日：2013-08-19
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Wei-Jen Huang , Tsung-Wei Huang , Shui-Mu Lin
CPC classification number: H02J50/12 , G06F1/3293 , H02J5/005 , H02J50/80 , H02M3/1588 , H02M3/33592 , H02M5/4505 , H02M5/4585 , H02M2001/4275
Abstract: A wireless power receiver includes a power receiving circuit wirelessly receiving power transmitted from a wireless power transmitter so as to generate an induced current, and a rectifying-and-modulating circuit including first to eighth switches and a control unit. The control unit is operable to control operation of each of the first to eighth switches between conduction and non-conduction. Accordingly, the first to fourth switches cooperatively constitute a full-bridge rectifier for rectifying the induced current generated by the power receiving circuit, and each of the fifth to eighth switches is operable to switch synchronously with a respective one of the first to fourth switches or to became non-conducting, thereby changing an amplitude of the induced current.
Abstract translation: 无线电力接收机包括无线接收从无线电力发射机发送的功率以产生感应电流的电力接收电路，以及包括第一至第八开关和控制单元的整流和调制电路。 控制单元可操作以控制导通和非导通之间的第一至第八开关中的每一个的操作。 因此，第一至第四开关协同地构成用于整流由电力接收电路产生的感应电流的全桥整流器，并且第五至第八开关中的每一个可操作以与第一至第四开关中的相应一个开关同步地切换， 变成不导通，从而改变感应电流的幅度。
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公开(公告)号：US09136766B2
公开(公告)日：2015-09-15
申请号：US13896631
申请日：2013-05-17
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Chien-Fu Tang , Tzu-Chen Lin , Isaac Y. Chen
CPC classification number: H02M3/33523 , H02M1/36 , H02M3/33592 , Y02B70/1475
Abstract: A switching power converting apparatus is capable of converting an input voltage to an output voltage, and includes a transformer, a primary side control module, and a secondary side control module. The secondary side control module utilizes voltage clamping techniques or current-drawing techniques to stop self-excited conversion from the input voltage to the output voltage when the output voltage is greater than a predetermined target voltage, or utilizes a non-self-excited conversion architecture.
Abstract translation: 开关电力转换装置能够将输入电压转换为输出电压，并且包括变压器，初级侧控制模块和次级侧控制模块。 次级侧控制模块利用电压钳位技术或电流绘制技术在输出电压大于预定目标电压时停止从输入电压到输出电压的自激变换，或利用非自激转换结构 。
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69.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：US20150189427A1
公开(公告)日：2015-07-02
申请号：US14304732
申请日：2014-06-13
Applicant: RICHTEK TECHNOLOGY CORP
Inventor： Kuo Shih Tsai
IPC: H04R3/00
CPC classification number: H04R3/007
Abstract: A method and device for generating a driving signal of a loudspeaker is provided. The method includes the steps of: outputting a driving voltage to a loudspeaker; measuring a current flowing through the loudspeaker; calculating to derive a voltage value corresponding to the current flowing through an electrical impedance of the loudspeaker, and calculating to derive a back-emf value by performing subtraction according to the driving voltage or a corresponding value thereof and the voltage value; integrating the back-emf value to derive an integrating value positive-correlating to a displacement of the diaphragm of the loudspeaker; and manipulating the driving voltage according to the integrating value to perform protection on the loudspeaker.
Abstract translation: 提供了一种用于产生扬声器的驱动信号的方法和装置。 该方法包括以下步骤：向扬声器输出驱动电压; 测量流经扬声器的电流; 计算导出与流过扬声器的电阻抗的电流对应的电压值，并且通过根据驱动电压或其对应值和电压值进行减法来计算导出反电动势值; 积分反电动势值以导出与扬声器的振膜的位移正相关的积分值; 并根据积分值操纵驱动电压，对扬声器进行保护。
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