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公开(公告)号：US20180375362A1
公开(公告)日：2018-12-27
申请号：US16006633
申请日：2018-06-12
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Wei-Jen Huang , Chih-Hua Hou , Fu-Chi Lin
CPC classification number: H02J7/0072 , H02J7/0055 , H02J7/022 , H02J7/025 , H02J7/04 , H02J50/10 , H02M1/10 , H02M3/07 , H02M3/158 , H02M7/2176
Abstract: A charging apparatus includes a DC switch circuit, a wireless power unit, a capacitive power conversion unit, and a switching power conversion unit. The charging apparatus operates in at least one of the following modes: in a constant current mode, the capacitive power conversion unit converts a bus current provided by the DC switch circuit or the wireless power unit to generate a predetermined constant charging current on a charging node to charge a battery; in a constant voltage mode, the switching power conversion unit converts a bus voltage provided by the DC switch circuit or the wireless power unit to generate a predetermined charging voltage on the charging node to charge the battery; in a first power output mode, the switching power conversion unit converts the battery voltage to generate an output voltage on a transmission interface pin.
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2.发明授权公开(公告)号：US10177576B2
公开(公告)日：2019-01-08
申请号：US15633694
申请日：2017-06-26
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Wei-Jen Huang , Shui-Mu Lin , Tsung-Wei Huang , Chih-Hua Hou
Abstract: A charger circuit for providing a charging current and voltage to a battery includes a power delivery unit, a capacitive power conversion circuit and a reverse blocking switch circuit. The power delivery unit converts an input power to a DC voltage and current. The capacitive power conversion circuit includes a conversion switch circuit including plural conversion switches coupled with one or more conversion capacitors, and a conversion control circuit. The DC current is regulated to a predetermined DC current level, and the conversion control circuit controls the connections of the plural conversion capacitors such that the charging current is scaled-up of the predetermined DC current level substantially by a current scale-up factor. The reverse blocking switch circuit is coupled in series with the capacitive power conversion circuit. The body diode of the reverse blocking switch is reversely coupled to the body diode of the conversion switch.
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3.发明申请公开(公告)号：US20180083459A1
公开(公告)日：2018-03-22
申请号：US15633694
申请日：2017-06-26
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Wei-Jen Huang , Shui-Mu Lin , Tsung-Wei Huang , Chih-Hua Hou
CPC classification number: H02J7/0008 , H02J7/0045 , H02J7/0052 , H02J7/0072 , H02J7/0077 , H02J7/022 , H02J7/027 , H02M3/07
Abstract: A charger circuit for providing a charging current and voltage to a battery includes a power delivery unit, a capacitive power conversion circuit and a reverse blocking switch circuit. The power delivery unit converts an input power to a DC voltage and current. The capacitive power conversion circuit includes a conversion switch circuit including plural conversion switches coupled with one or more conversion capacitors, and a conversion control circuit. The DC current is regulated to a predetermined DC current level, and the conversion control circuit controls the connections of the plural conversion capacitors such that the charging current is scaled-up of the predetermined DC current level substantially by a current scale-up factor. The reverse blocking switch circuit is coupled in series with the capacitive power conversion circuit. The body diode of the reverse blocking switch is reversely coupled to the body diode of the conversion switch.
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公开(公告)号：US10523032B2
公开(公告)日：2019-12-31
申请号：US16006633
申请日：2018-06-12
Applicant: RICHTEK TECHNOLOGY CORPORATION
Inventor： Wei-Jen Huang , Chih-Hua Hou , Fu-Chi Lin
Abstract: A charging apparatus includes a DC switch circuit, a wireless power unit, a capacitive power conversion unit, and a switching power conversion unit. The charging apparatus operates in at least one of the following modes: in a constant current mode, the capacitive power conversion unit converts a bus current provided by the DC switch circuit or the wireless power unit to generate a predetermined constant charging current on a charging node to charge a battery; in a constant voltage mode, the switching power conversion unit converts a bus voltage provided by the DC switch circuit or the wireless power unit to generate a predetermined charging voltage on the charging node to charge the battery; in a first power output mode, the switching power conversion unit converts the battery voltage to generate an output voltage on a transmission interface pin.
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