公开(公告)号：US12021402B2

公开(公告)日：2024-06-25

申请号：US17402133

申请日：2021-08-13

Applicant: Halo Microelectronics International

Inventor： Rui Liu

IPC: H02J7/00 ,  H02J7/34 ,  H02M1/00 ,  H02M3/07

CPC classification number: H02J7/0019 ,  H02J7/0016 ,  H02J7/007182 ,  H02J7/345 ,  H02M1/0095 ,  H02M3/073 ,  H02J2207/20 ,  H02J2207/50

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.

公开(公告)号：US20240136932A1

公开(公告)日：2024-04-25

申请号：US17969568

申请日：2022-10-18

Applicant: Halo Microelectronics International

Inventor： Rui Liu

IPC: H02M3/158 ,  H02M1/08 ,  H03L7/081

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.

公开(公告)号：US20230299674A1

公开(公告)日：2023-09-21

申请号：US18056758

申请日：2022-11-18

Applicant: Halo Microelectronics International

Inventor： Rui Liu ,  Sofjan Goenawan

IPC: H02M3/158 ,  H02M3/06 ,  H02M1/08 ,  H02M3/157

CPC classification number: H02M3/158 ,  H02M1/083 ,  H02M3/06 ,  H02M3/157

Abstract: An apparatus includes a PWM ramp generator coupled between a switching node of a power converter and a first input of a comparator, the PWM ramp generator comprising a first resistor and a first capacitor connected in series between the switching node and the first input of the comparator, and a second resistor and a second capacitor connected in parallel between the first input of the comparator and a feedback node, and a PFM control circuit comprising an error amplifier and a current zero crossing detection comparator, wherein the error amplifier is coupled between a second input of the comparator and a reference node, and the PFM control circuit is configured to generate gate drive signal for the power converter when the power converter is configured to operate in a PFM mode.

公开(公告)号：US20230089638A1

公开(公告)日：2023-03-23

申请号：US17475875

申请日：2021-09-15

Applicant: Halo Microelectronics International

Inventor： Rui Liu

IPC: H02J7/00 ,  H02M3/07

Abstract: A battery charging system includes a buck switching converter configured to operate in either a buck mode or a boost mode depending on a system reconfiguration, a linear charger having a first terminal and a second terminal, wherein at least one terminal of the first terminal and the second terminal of the linear charger is used for the system reconfiguration, and a switched capacitor converter configured to operate in either a 2:1 charge pump mode or a 1:2 reverse charge pump mode depending on the system reconfiguration.

公开(公告)号：US20220149644A1

公开(公告)日：2022-05-12

申请号：US17117346

申请日：2020-12-10

Applicant: Halo Microelectronics International

Inventor： Rui Liu

IPC: H02J7/00 ,  H02J7/34

Abstract: A single-stage battery charger system includes a switched capacitor converter coupled between an input power source and a load, an inductor coupled between a midpoint of the switched capacitor converter and the load, and an isolation switch coupled between the midpoint and the load, wherein the isolation switch is configured such that the single-stage battery charger system functions as a multilevel switching charger when the isolation switch is turned off, and the single-stage battery charger system functions as a switched capacitor charger when the isolation switch is turned on.