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公开(公告)号：US12027966B2
公开(公告)日：2024-07-02
申请号：US17892085
申请日：2022-08-21
Applicant: Richtek Technology Corporation
Inventor： Ta-Yung Yang , Wei-Chuan Wu , Chih-Hao Yang , Ping-Ching Huang , Li-Wen Fang
CPC classification number: H02M1/084 , H02M1/0041 , H02M1/0043 , H02M3/158
Abstract: A control circuit for controlling a stackable multiphase power converter includes: a synchronization terminal; a synchronization signal connected to the synchronization terminals of a plurality of the control circuits in parallel, wherein the synchronization signal includes a plurality of pulses to be successively counted as a count number; and a reset signal, configured to reset and initiate the count number; wherein the control circuit further comprises a phase-sequence number, wherein the control circuit enables a corresponding power stage circuit to generate a phase of the output power when the count number reaches the phase-sequence number.
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Patent Agency Ranking
2.发明授权Switching regulator control circuit with multiple clock frequency setting modes 有权具有多种时钟频率设定模式的开关稳压控制电路公开(公告)号：US09088204B2
公开(公告)日：2015-07-21
申请号：US13913050
申请日：2013-06-07
Applicant: Richtek Technology Corporation
Inventor： Li-Wen Fang , Ping-Ching Huang , Cheng-Kuang Lin , An-Tung Chen
Abstract: A control circuit of a switching regulator includes a control pin for coupling with an external resistor; a resistor detecting circuit for detecting a resistance of the external resistor; a current generating module for generating a corresponding control current according to a detection result of the resistor detecting circuit; an oscillating circuit for generating a clock signal; and a mode-switching circuit. When the mode-switching circuit configures the oscillating circuit to operate in a resistor-controlled mode, the oscillating circuit generates the clock signal according to the control current so that the clock signal has a frequency corresponding to the resistance of the external resistor. When the mode-switching circuit configures the oscillating circuit to operate in a signal-controlled mode, the oscillating circuit generates the clock signal according to an external synchronous signal coupled with the control pin so that the clock signal is synchronized with the external synchronous signal.
Abstract translation: 开关调节器的控制电路包括用于与外部电阻器耦合的控制引脚; 用于检测外部电阻器的电阻的电阻检测电路; 电流产生模块，用于根据电阻检测电路的检测结果产生相应的控制电流; 用于产生时钟信号的振荡电路; 和模式切换电路。 当模式切换电路将振荡电路配置为以电阻器控制模式工作时，振荡电路根据控制电流产生时钟信号，使得时钟信号具有与外部电阻器的电阻相对应的频率。 当模式切换电路将振荡电路配置为以信号控制模式工作时，振荡电路根据与控制引脚耦合的外部同步信号产生时钟信号，使得时钟信号与外部同步信号同步。
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公开(公告)号：US20220271668A1
公开(公告)日：2022-08-25
申请号：US17669431
申请日：2022-02-11
Applicant: Richtek Technology Corporation
Inventor： Chih-Wen Hsiao , Ping-Ching Huang , Li-Wen Fang
Abstract: A scalable multi-phase switching converter includes: converter modules, each including: a loop control unit, which generates a basic trigger pulse according to a feedback signal in master operation mode; and a switching control unit, which determines an operation mode and a corresponding phase serial order according to a setting signal received by a setting pin in a setting mode, and generates a multi-phase trigger pulse signal at a trigger pin according to the basic trigger pulse in master operation mode. The switching control unit receives the multi-phase trigger pulse signal at the trigger pin in slave operation mode. The switching control unit generates an ON-trigger pulse according to the multi-phase trigger pulse signal and the corresponding phase serial order. An ON-period determination unit generates a conduction control pulse according to the ON-trigger pulse to control a corresponding inductor. The trigger pins of the converter modules are coupled to each other.
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公开(公告)号：US20250079984A1
公开(公告)日：2025-03-06
申请号：US18537844
申请日：2023-12-13
Applicant: Richtek Technology Corporation
Inventor： Wei-Chuan Wu , Chih-Hao Yang , Li-Wen Fang , Ting-Jung Tai
Abstract: A conversion control circuit controls plural stackable sub-converters which are coupled in parallel to generate an output power to a load. The conversion control circuit includes a current sharing terminal and a current sharing circuit. A current sharing signal is connected, in parallel, to the current sharing terminals. The current sharing circuit includes: configuration (1): the current sharing signal is generated only according to an inductor current corresponding to one of plural inductors of the plural stackable sub-converters; or configuration (2): the current sharing signal is generated according to plural inductor currents corresponding to plural inductors of plural activated phases of the plural stackable sub-converters, wherein a ratio of a portion of the current sharing signal generated by a master control circuit to a portion generated by one of the slave control circuits is k which relates to a difference between a total phase number and an activated phase number.
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公开(公告)号：US11929681B2
公开(公告)日：2024-03-12
申请号：US17669431
申请日：2022-02-11
Applicant: Richtek Technology Corporation
Inventor： Chih-Wen Hsiao , Ping-Ching Huang , Li-Wen Fang
CPC classification number: H02M3/1586 , H02M1/08
Abstract: A scalable multi-phase switching converter includes: converter modules, each including: a loop control unit, which generates a basic trigger pulse according to a feedback signal in master operation mode; and a switching control unit, which determines an operation mode and a corresponding phase serial order according to a setting signal received by a setting pin in a setting mode, and generates a multi-phase trigger pulse signal at a trigger pin according to the basic trigger pulse in master operation mode. The switching control unit receives the multi-phase trigger pulse signal at the trigger pin in slave operation mode. The switching control unit generates an ON-trigger pulse according to the multi-phase trigger pulse signal and the corresponding phase serial order. An ON-period determination unit generates a conduction control pulse according to the ON-trigger pulse to control a corresponding inductor. The trigger pins of the converter modules are coupled to each other.
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公开(公告)号：US20230238875A1
公开(公告)日：2023-07-27
申请号：US17892085
申请日：2022-08-21
Applicant: Richtek Technology Corporation
Inventor： Ta-Yung Yang , Wei-Chuan Wu , Chih-Hao Yang , Ping-Ching Huang , Li-Wen Fang
CPC classification number: H02M1/084 , H02M1/0041 , H02M1/0043 , H02M3/158
Abstract: A control circuit for controlling a stackable multiphase power converter includes: a synchronization terminal; a synchronization signal connected to the synchronization terminals of a plurality of the control circuits in parallel, wherein the synchronization signal includes a plurality of pulses to be successively counted as a count number; and a reset signal, configured to reset and initiate the count number; wherein the control circuit further comprises a phase-sequence number, wherein the control circuit enables a corresponding power stage circuit to generate a phase of the output power when the count number reaches the phase-sequence number.
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