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公开(公告)号：US20240235400A9
公开(公告)日：2024-07-11
申请号：US17969568
申请日：2022-10-19
Applicant: Halo Microelectronics International
Inventor： Rui Liu
CPC classification number: H02M3/1586 , H02M1/08 , H03L7/0812
Abstract: A controller for controlling a multi-phase power conversion system includes a pulse width modulation (PWM) comparator configured to generate a PWM signal based on a ramp signal, a voltage reference signal and a feedback voltage from the power conversion system. A circuit may be configured to generate, based on the PWM signal, PWM signals by delaying the PWM signal with different delay times, and feed the PWM signals to respective switching power converters of the multi-phase power conversion system, to regulate an output voltage of the power conversion system. Each switching power converter may include a control circuit configured to adjust a pulse width of a received PWM signal based on a reference current and an output current of a corresponding switching power converter, to generate an adjusted PWM signal, based on which, an output voltage of the corresponding switching power converter is regulated.
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公开(公告)号：US20240079949A1
公开(公告)日：2024-03-07
申请号：US18389216
申请日：2023-11-13
Applicant: Halo Microelectronics International
Inventor： Rui Liu , Thomas Liu , Songnan Yang
CPC classification number: H02M1/0095 , H02M1/0054 , H02M3/072
Abstract: A converter includes L phase legs, each phase leg of the L phase legs comprising a plurality of switches connected in series between an input power source and ground, wherein a first flying capacitor of an Mth phase is cross-coupled between an Mth phase leg and an (M+1)th phase leg, and a first flying capacitor of an Lth phase is cross-coupled between an Lth phase leg and a first phase leg, and wherein switches of the L phase legs are configured such that a ratio of an input voltage of the hybrid multi-phase step-down power converter to an output voltage of the hybrid multi-phase step-down power converter is equal to N/D, and wherein L, M, N are positive integers with M 2, and D is a duty cycle of the hybrid multi-phase step-down power converter.
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公开(公告)号：US11817770B2
公开(公告)日：2023-11-14
申请号：US17663696
申请日：2022-05-17
Applicant: Halo Microelectronics International
Inventor： Rui Liu , Thomas Liu , Songnan Yang
CPC classification number: H02M1/0095 , H02M3/07 , H02M3/1584 , H02M1/0043
Abstract: A converter includes a first phase comprising a plurality of first phase switches connected in series between an input power source and ground, a second phase comprising a plurality of second phase switches connected in series between the input power source and ground, and a first flying capacitor of the first phase and a first flying capacitor of the second phase cross-coupled between the first phase and the second phase, wherein switches of the first phase and switches of the second phase are configured such that a ratio of an input voltage of the hybrid dual-phase step-down power converter to an output voltage of the hybrid dual-phase step-down power converter is equal to N/D, and wherein N is an integer, and D is a duty cycle of the hybrid dual-phase step-down power converter.
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公开(公告)号：US20230163684A1
公开(公告)日：2023-05-25
申请号：US17531341
申请日：2021-11-19
Applicant: Halo Microelectronics International
Inventor： Rui Liu
CPC classification number: H02M3/07 , H02M3/158 , H02M1/0009
Abstract: A control circuit is configured to control a switched capacitor converter to operate in a pulse frequency modulation (PFM) mode. The control circuit includes a one-shot circuitry configured to generate a one-shot pulse to drive the switched capacitor converter to operate in the PFM mode. A PFM mode comparator is coupled to the one-shot circuitry, and is configured to trigger, based on an output voltage of the switched capacitor converter, the one-shot circuitry to generate the one-shot pulse. The switched capacitor converter may be controlled to enter or exit the PFM mode operation based on a trailing current of a flying capacitor of the switched capacitor converter, an output current of the switched capacitor converter, a charging time duration of the flying capacitor when the switched capacitor converter is operating in the PFM mode, or a PFM switching period of the switched capacitor converter operating in the PFM mode.
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公开(公告)号：US20230134427A1
公开(公告)日：2023-05-04
申请号：US17455860
申请日：2021-11-19
Applicant: Halo Microelectronics International
Inventor： Rui Liu , Songnan Yang
IPC: H02M3/07
Abstract: A switched capacitor converter includes a first leg between ground and a first voltage node, a second leg between ground and a second voltage node, a first flying capacitor connected between a first switch common node and a third switch common node of the first leg, a second flying capacitor connected between a first switch common node and a third switch common node of the second leg, a third flying capacitor connected between the first voltage node and the second voltage node, a first upper switch connected between the first voltage node and ground, and a second upper switch connected between the second voltage node and an input terminal.
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Patent Agency Ranking
公开(公告)号：US20230026736A1
公开(公告)日：2023-01-26
申请号：US17382738
申请日：2021-07-22
Applicant: Halo Microelectronics International
Inventor： Rui Liu
Abstract: A single-stage battery charging system includes a hybrid converter comprising a plurality of first power switches connected in series, an inductor and a first flying capacitor, wherein the inductor is connected to a midpoint of the plurality of first power switches, a switched capacitor converter comprising a plurality of second power switches connected in series, and a second flying capacitor, and an isolation switch coupled between the midpoint of the plurality of first power switches and a midpoint of the plurality of second power switches.
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公开(公告)号：US20240380319A1
公开(公告)日：2024-11-14
申请号：US18783812
申请日：2024-07-25
Applicant: Halo Microelectronics International
Inventor： Rui Liu
Abstract: A control circuit is configured to control a switched capacitor converter to operate in a pulse frequency modulation (PFM) mode. The control circuit includes a one-shot circuitry configured to generate a one-shot pulse to drive the switched capacitor converter to operate in the PFM mode. A PFM mode comparator is coupled to the one-shot circuitry, and is configured to trigger, based on an output voltage of the switched capacitor converter, the one-shot circuitry to generate the one-shot pulse. The switched capacitor converter may be controlled to exit or continue the PFM mode operation based on a trailing current flowing through a flying capacitor of the switched capacitor converter, an output current of the switched capacitor converter, a time interval of charging the flying capacitor, or a PFM switching period of the switched capacitor converter operating in the PFM mode. Corresponding controlling methods are also provided.
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公开(公告)号：US11936290B2
公开(公告)日：2024-03-19
申请号：US17455860
申请日：2021-11-19
Applicant: Halo Microelectronics International
Inventor： Rui Liu , Songnan Yang
IPC: H02M3/07
CPC classification number: H02M3/07
Abstract: A switched capacitor converter includes a first leg between ground and a first voltage node, a second leg between ground and a second voltage node, a first flying capacitor connected between a first switch common node and a third switch common node of the first leg, a second flying capacitor connected between a first switch common node and a third switch common node of the second leg, a third flying capacitor connected between the first voltage node and the second voltage node, a first upper switch connected between the first voltage node and ground, and a second upper switch connected between the second voltage node and an input terminal.
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公开(公告)号：US20240006918A1
公开(公告)日：2024-01-04
申请号：US17853575
申请日：2022-06-29
Applicant: Halo Microelectronics International
Inventor： Rui Liu , Lijie Zhao , Feng Zhou
CPC classification number: H02J50/12 , H04B5/0037 , H04L27/04 , H02M1/0025 , H04B5/0075
Abstract: In an embodiment method, an envelope voltage of a resonant capacitor of a wireless power receiver in a wireless charging system may be detected at an output node. One or more parameters of the wireless power receiver may be adjusted in order keep the envelope voltage within a pre-determined voltage range. The one or more parameters includes a capacitance across a receiving coil and the resonant capacitor, or a current of a sub-circuit connected between the output node and a ground. An amplitude shift keying (ASK) carrier signal may be detected at a wireless power transmitter of the wireless charging system and attenuated. A demodulated ASK signal may be generated from the attenuated ASK carrier signal based on peak values of the attenuated ASK carrier signal and a zero-crossing signal generated from the attenuated ASK carrier signal.
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公开(公告)号：US20230047446A1
公开(公告)日：2023-02-16
申请号：US17402133
申请日：2021-08-13
Applicant: Halo Microelectronics International
Inventor： Rui Liu
Abstract: A method includes turning on a first group of switches of a switched capacitor converter in a battery charging system to establish a first conductive path, and configuring a system voltage at a system bus to charge a first flying capacitor to a predetermined voltage level through the first conductive path, wherein the predetermined voltage level is less than the system voltage, and turning on a second group of switches of the switched capacitor converter in the battery charging system to establish a second conductive path to charge a battery, wherein a sum of a voltage across the first flying capacitor and the system voltage is applied to the battery.
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