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公开(公告)号：US20230375641A1
公开(公告)日：2023-11-23
申请号：US18229991
申请日：2023-08-03
Applicant: Halo Microelectronics International
Inventor： Suming Lai , Kenneth Chung-Yin Kwok , Kien Chan Vi , Anan Xiang , Songnan Yang
CPC classification number: G01R31/52 , G01R31/40 , H02M3/07 , H02J7/007 , H02J2207/20
Abstract: A method includes connecting an output of a switched capacitor converter to a battery, the switched capacitor converter comprising a first switch, a second switch, a third switch and an upper circuit connected in series, and a flying capacitor connected between a common node of the first switch and the second switch, and a common node of the third switch and the upper circuit, in a first short circuit testing step, determining whether the third switch is shorted by comparing a voltage on the common node of the third switch and the upper circuit with a first predetermined voltage reference, and in a second short circuit testing step, determining whether the first switch and the second switch are shorted by comparing a voltage on the common node of the first switch and the second switch with a second predetermined voltage reference and a third predetermined voltage reference, respectively.
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公开(公告)号：US11740300B2
公开(公告)日：2023-08-29
申请号：US17484269
申请日：2021-09-24
Applicant: Halo Microelectronics International
Inventor： Suming Lai , Kenneth Chung-Yin Kwok , Kien Chan Vi
Abstract: A method includes connecting an input voltage bus of a switched capacitor converter to a power source through a load switch, in a first short circuit testing step, determining whether the load switch or a second switch is shorted by comparing a voltage on the input voltage bus with a first predetermined voltage reference, after passing the first short circuit testing step, in a second short circuit testing step, determining whether a first switch or a fourth switch is shorted by comparing a voltage on the common node of the third switch and the fourth switch with a second predetermined voltage reference, and after passing the second short circuit testing step, in a third short circuit testing step, determining whether a third switch is shorted by comparing the voltage on the common node of the third switch and the fourth switch with a third predetermined voltage reference.
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公开(公告)号：US20230044360A1
公开(公告)日：2023-02-09
申请号：US17393875
申请日：2021-08-04
Applicant: Halo Microelectronics International
Inventor： Lijie Zhao , Kenneth Chung-Yin Kwok , Suming Lai , Zhao Fang
IPC: H01L27/06 , H01L21/8249 , H01L29/66 , H01L29/872 , H03K17/0814
Abstract: An apparatus includes a first drain/source region and a second drain/source region surrounded by an isolation ring formed over a substrate, the isolation ring formed being configured to be floating, and a first diode connected between the substrate and the isolation ring, wherein the first diode is a Schottky diode.
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Patent Agency Ranking
公开(公告)号：US12149162B2
公开(公告)日：2024-11-19
申请号：US17933510
申请日：2022-09-20
Applicant: Halo Microelectronics International
Inventor： Suming Lai , Kenneth Chung-Yin Kwok
Abstract: A power converter includes a plurality of power switches connected in series between a system ground and an input voltage bus, wherein an upper power switch located between the input voltage bus and an output terminal of the power converter, and immediately adjacent to the output terminal of the power converter is configured as an isolation switch including two back-to-back connected diodes and a bulk terminal, and wherein a connection of the bulk terminal is reconfigurable, and a driver configured to drive the upper power switch immediately adjacent to the output terminal of the power converter.
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公开(公告)号：US20220131456A1
公开(公告)日：2022-04-28
申请号：US17208605
申请日：2021-03-22
Applicant: Halo Microelectronics International
Inventor： Suming Lai , Kenneth Chung-Yin Kwok
Abstract: An apparatus includes a first gate drive transistor and a second gate drive transistor connected in series, a common node of the first gate drive transistor and the second gate drive transistor connected to a gate of a power switch, the second gate drive transistor configured as a bulk switch having a bulk terminal connected to a bulk terminal of the power switch, a first auxiliary transistor connected between the bulk terminal and a source of the power switch, a second auxiliary transistor coupled between the gate of the power switch and a system ground, and a third auxiliary transistor coupled between a logic control ground and the system ground, wherein the second auxiliary transistor and the third auxiliary transistor are configured to pull the gate of the power switch and the logic control ground down to the system ground in response to a turn off of the apparatus.
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公开(公告)号：US20230015792A1
公开(公告)日：2023-01-19
申请号：US17933510
申请日：2022-09-20
Applicant: Halo Microelectronics International
Inventor： Suming Lai , Kenneth Chung-Yin Kwok
Abstract: Gate Drive Apparatus and Control Method for Switched Capacitor Converter A power converter includes a plurality of power switches connected in series between a system ground and an input voltage bus, wherein an upper power switch located between the input voltage bus and an output terminal of the power converter, and immediately adjacent to the output terminal of the power converter is configured as an isolation switch including two back-to-back connected diodes and a bulk terminal, and wherein a connection of the bulk terminal is reconfigurable, and a driver configured to drive the upper power switch immediately adjacent to the output terminal of the power converter.
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公开(公告)号：US11482919B2
公开(公告)日：2022-10-25
申请号：US17208605
申请日：2021-03-22
Applicant: Halo Microelectronics International
Inventor： Suming Lai , Kenneth Chung-Yin Kwok
Abstract: An apparatus includes a first gate drive transistor and a second gate drive transistor connected in series, a common node of the first gate drive transistor and the second gate drive transistor connected to a gate of a power switch, the second gate drive transistor configured as a bulk switch having a bulk terminal connected to a bulk terminal of the power switch, a first auxiliary transistor connected between the bulk terminal and a source of the power switch, a second auxiliary transistor coupled between the gate of the power switch and a system ground, and a third auxiliary transistor coupled between a logic control ground and the system ground, wherein the second auxiliary transistor and the third auxiliary transistor are configured to pull the gate of the power switch and the logic control ground down to the system ground in response to a turn off of the apparatus.
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公开(公告)号：US20220128632A1
公开(公告)日：2022-04-28
申请号：US17484269
申请日：2021-09-24
Applicant: Halo Microelectronics International
Inventor： Suming Lai , Kenneth Chung-Yin Kwok , Kien Chan Vi
Abstract: A method includes connecting an input voltage bus of a switched capacitor converter to a power source through a load switch, in a first short circuit testing step, determining whether the load switch or a second switch is shorted by comparing a voltage on the input voltage bus with a first predetermined voltage reference, after passing the first short circuit testing step, in a second short circuit testing step, determining whether a first switch or a fourth switch is shorted by comparing a voltage on the common node of the third switch and the fourth switch with a second predetermined voltage reference, and after passing the second short circuit testing step, in a third short circuit testing step, determining whether a third switch is shorted by comparing the voltage on the common node of the third switch and the fourth switch with a third predetermined voltage reference.
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