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Patent Agency Ranking
公开(公告)号：US11581797B2
公开(公告)日：2023-02-14
申请号：US17680245
申请日：2022-02-24
Applicant: Richtek Technology Corporation
Inventor： Wei-Hsu Chang , Shih-Jen Yang , Yi-Wei Lee , Ta-Yung Yang
Abstract: A multiple output universal serial bus travel adaptor includes: at least one AC-DC converter for converting an AC power to a first DC power; at least one DC-DC converter for providing a second DC power according to the first DC power; plural switches which are coupled to the AC-DC converter and/or the DC-DC converter to provide the first DC power or the second DC power to corresponding connectors according to operation signals; and a protocol controller configured to generate the operation signals according to at least one of the following parameters: a) the types of the connectors; b) whether there is a mobile device connected with the connectors; c) a first command from the mobile device; d) the power consumed by the mobile devices; e) the currents flowing through the connectors; and f) the voltages at the connectors.
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公开(公告)号：US20220271645A1
公开(公告)日：2022-08-25
申请号：US17680245
申请日：2022-02-24
Applicant: Richtek Technology Corporation
Inventor： Wei-Hsu Chang , Shih-Jen Yang , Yi-Wei Lee , Ta-Yung Yang
Abstract: A multiple output universal serial bus travel adaptor includes: at least one AC-DC converter for converting an AC power to a first DC power; at least one DC-DC converter for providing a second DC power according to the first DC power; plural switches which are coupled to the AC-DC converter and/or the DC-DC converter to provide the first DC power or the second DC power to corresponding connectors according to operation signals; and a protocol controller configured to generate the operation signals according to at least one of the following parameters: a) the types of the connectors; b) whether there is a mobile device connected with the connectors; c) a first command from the mobile device; d) the power consumed by the mobile devices; e) the currents flowing through the connectors; and f) the voltages at the connectors.
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公开(公告)号：US09753077B2
公开(公告)日：2017-09-05
申请号：US14803689
申请日：2015-07-20
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yi-Min Shiu , Yi-Shan Chu , Shih-Jen Yang
CPC classification number: G01R31/045 , H02H3/08 , H02H3/087 , H02H3/445
Abstract: An abnormal connection detection method is used between a power supplier and a power receiver. The power supplier and the power receiver are connected through a cable. The cable includes positive and negative power transmission lines. The abnormal connection detection method includes: providing an output voltage from the power supplier, wherein the output voltage is lower than a predetermined voltage threshold; detecting, according to the output voltage, whether an output current generated by the power supplier is higher than a predetermined current threshold; and when the output current is higher than the predetermined current threshold, determining that an abnormal connection occurs between the power supplier and the power receiver.
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4.发明公开公开(公告)号：US20240146205A1
公开(公告)日：2024-05-02
申请号：US18473221
申请日：2023-09-23
Applicant: Richtek Technology Corporation
Inventor： Shin-Li Lin , He-Yi Shu , Shih-Jen Yang , Ta-Yung Yang , Yi-Min Shiu , Chih-Ching Lee , Yu-Chieh Hsieh , Chao-Chi Chen
CPC classification number: H02M3/33592 , H02M1/0032 , H02M1/0045
Abstract: A flyback power converter includes a power transformer, a first lossless voltage conversion circuit, a first low-dropout linear regulator and a secondary side power supply circuit. The first low-dropout linear regulator (LDO) generates a first operation voltage as power supply for being supplied to a sub-operation circuit. The secondary side power supply circuit includes a second lossless voltage conversion circuit and a second LDO. The second LDO generates a second operation voltage. The first operation voltage and the second operation voltage are shunted to a common node. When a first lossless conversion voltage is greater than a first threshold voltage, the second LDO is enabled to generate the second operation voltage to replace the first operation voltage as power supply supplied to the sub-operation circuit; wherein the second lossless conversion voltage is lower than the first lossless switching voltage.
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公开(公告)号：US20160033566A1
公开(公告)日：2016-02-04
申请号：US14803689
申请日：2015-07-20
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yi-Min Shiu , Yi-Shan Chu , Shih-Jen Yang
CPC classification number: G01R31/045 , H02H3/08 , H02H3/087 , H02H3/445
Abstract: An abnormal connection detection method is used between a power supplier and a power receiver. The power supplier and the power receiver are connected through a cable. The cable includes positive and negative power transmission lines. The abnormal connection detection method includes: providing an output voltage from the power supplier, wherein the output voltage is lower than a predetermined voltage threshold; detecting, according to the output voltage, whether an output current generated by the power supplier is higher than a predetermined current threshold; and when the output current is higher than the predetermined current threshold, determining that an abnormal connection occurs between the power supplier and the power receiver.
Abstract translation: 在电源和电源接收器之间使用异常连接检测方法。 电源和电源接头通过电缆连接。 电缆包括正，负电力传输线。 异常连接检测方法包括：提供来自电源的输出电压，其中输出电压低于预定电压阈值; 根据输出电压检测由电源产生的输出电流是否高于预定电流阈值; 并且当所述输出电流高于所述预定电流阈值时，确定在所述电力供应器和所述电力接收器之间发生异常连接。
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