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Patent Agency Ranking
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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2.发明授权公开(公告)号：US10389249B2
公开(公告)日：2019-08-20
申请号：US16009374
申请日：2018-06-15
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Hong-Wei Huang , Yu-Kai Lin , Wei-Chuan Wu
Abstract: A switching regulator having adjustable inductor current threshold employs a control method which includes: (S1) determining whether an output voltage is greater than a reference voltage or determining whether a switching frequency of the power stage is smaller than a predetermined lower frequency limit, and (S2) when it is determined yes in the step (S1), adjusting the inductor current threshold, such that the switching regulator operates under a pseudo discontinuous conduction mode (PDCM) wherein the switching frequency is not smaller than the predetermined lower frequency limit. Consequently, when the switching regulator operates under a light load mode, an optimum balance between a total power consumption and switching noise interference will be ensured.
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3.发明申请公开(公告)号：US20190006946A1
公开(公告)日：2019-01-03
申请号：US16009374
申请日：2018-06-15
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Hong-Wei Huang , Yu-Kai Lin , Wei-Chuan Wu
CPC classification number: H02M3/158 , H02M1/088 , H02M2001/0025
Abstract: A switching regulator having adjustable inductor current threshold employs a control method which includes: (S1) determining whether an output voltage is greater than a reference voltage or determining whether a switching frequency of the power stage is smaller than a predetermined lower frequency limit, and (S2) when it is determined yes in the step (S1), adjusting the inductor current threshold, such that the switching regulator operates under a pseudo discontinuous conduction mode (PDCM) wherein the switching frequency is not smaller than the predetermined lower frequency limit. Consequently, when the switching regulator operates under a light load mode, an optimum balance between a total power consumption and switching noise interference will be ensured.
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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：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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