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公开(公告)号：US10181785B2
公开(公告)日：2019-01-15
申请号：US15874733
申请日：2018-01-18
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yi-Min Shiu , Isaac Y. Chen
Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
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公开(公告)号：US10476374B2
公开(公告)日：2019-11-12
申请号：US16167434
申请日：2018-10-22
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yi-Min Shiu , Isaac Y. Chen
Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
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公开(公告)号：US09755695B2
公开(公告)日：2017-09-05
申请号：US15097240
申请日：2016-04-12
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yi-Min Shiu , Chao-Chi Chen , Pei-Sheng Tsu
IPC: H04B3/00 , H04B3/54 , G06F1/26 , G06F13/42 , G11C5/14 , G11C11/4096 , G11C11/4074
CPC classification number: H04B3/54 , G06F1/26 , G06F13/4282 , G09G2300/0408 , G09G2310/0289 , G11C5/14 , G11C11/4074 , G11C11/4096
Abstract: The present invention discloses an input/output (I/O) signal processing circuit and processing method. The I/O signal processing circuit includes a level adjustable I/O circuit and an adjustment circuit. The I/O signal processing circuit includes an output driver and/or an input comparator. The output driver transmits an output signal via a signal transmission line according to an output data. The output driver has an adjustable high operation voltage level and an adjustable low operation voltage level, which determine a high level and a low level of the output signal, respectively. The input comparator receives an input signal via the signal transmission line and comparing the input signal with an adjustable reference voltage, so as to generate an input data. The adjustment circuit generates an adjustment signal according to voltage drop related information, to correspondingly adjust the adjustable high and low operation voltage level and/or the adjustable reference voltage.
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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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Patent Agency Ranking
5.发明申请公开(公告)号：US20190058391A1
公开(公告)日：2019-02-21
申请号：US16167451
申请日：2018-10-22
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yi-Min Shiu , Isaac Y. Chen
Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
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6.发明申请公开(公告)号：US20180159423A1
公开(公告)日：2018-06-07
申请号：US15874733
申请日：2018-01-18
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yi-Min Shiu , Isaac Y. Chen
CPC classification number: H02M1/32 , H02H7/10 , H02M3/156 , H02M3/33523 , H02M7/217 , H02M2001/0012 , H02M2001/0025
Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
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7.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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8.发明申请公开(公告)号：US20190058390A1
公开(公告)日：2019-02-21
申请号：US16167434
申请日：2018-10-22
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Yi-Min Shiu , Isaac Y. Chen
CPC classification number: H02M1/32 , H02H7/10 , H02M3/156 , H02M3/33523 , H02M7/217 , H02M2001/0012 , H02M2001/0025
Abstract: The present invention discloses a short circuit and/or bad connection detection method for use in a power supply system. The power supply system includes a power converter which converts an input voltage to an output voltage and supplies an output current to an electronic device. In the short circuit detection method, the conversion from the input voltage to the output voltage is disabled in a disable time period, and whether a short circuit occurs is determined according to the decreasing speed of the output voltage. In the bad connection detection method, an actual voltage and an actual current received by the electronic device are compared with the output voltage and the output current, to determine whether a bad connection occurs.
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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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