公开(公告)号：US20190165674A1

公开(公告)日：2019-05-30

申请号：US16205023

申请日：2018-11-29

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： YAMING CAO ,  Dongze Yang ,  Qiang Luo ,  Lieyi Fang

IPC: H02M3/156 ,  G05F1/10

Abstract: System and method for regulating a power conversion system. For example, a system controller for regulating a power conversion system includes an amplifier, a variable-resistance component, a capacitor, and a modulation and drive component. The amplifier is configured to receive a reference signal and a feedback signal associated with an output signal of the power conversion system, the amplifier including an amplifier terminal. The variable-resistance component is associated with a first variable resistance value, the variable-resistance component including a first component terminal and a second component terminal, the first component terminal being coupled with the amplifier terminal. The capacitor includes a first capacitor terminal and a second capacitor terminal, the first capacitor terminal being coupled with the second component terminal. The modulation and drive component includes a first terminal and a second terminal, the first terminal being coupled with the amplifier terminal.

公开(公告)号：US20190141801A1

公开(公告)日：2019-05-09

申请号：US16161527

申请日：2018-10-16

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： ZHUOYAN LI ,  LIQIANG ZHU ,  JIQING YANG ,  LIEYI FANG

IPC: H05B33/08 ,  H02M3/156 ,  H02M3/335 ,  H02H1/00 ,  H02H7/12 ,  H02H3/20

Abstract: System controller and method for a power converter. For example, a system controller for a power converter includes a logic controller configured to generate a modulation signal, and a driver configured to receive the modulation signal, generate a drive signal based at least in part on the modulation signal, and output the drive signal to switch to affect a current flowing through an inductive winding for a power converter. Additionally, the system controller includes a voltage-to-voltage converter configured to receive a first voltage signal, the modulation signal, and a demagnetization signal, and to generate a second voltage signal based at least in part on the first voltage signal, the modulation signal, and the demagnetization signal.

公开(公告)号：US10243448B2

公开(公告)日：2019-03-26

申请号：US15374896

申请日：2016-12-09

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： Chao Yao ,  Yunchao Zhang ,  Yuan Lin ,  Zhiqiang Sun ,  Lieyi Fang

IPC: H02M1/32 ,  H02H9/02 ,  H02M3/335 ,  H02M1/08 ,  H02M3/156 ,  H02M1/00

Abstract: System and method for protecting a power converter. An example system controller for protecting a power converter includes a signal generator, a comparator, and a modulation and drive component. The signal generator is configured to generate a threshold signal. The comparator is configured to receive the threshold signal and a current sensing signal and generate a comparison signal based on at least information associated with the threshold signal and the current sensing signal, the current sensing signal indicating a magnitude of a primary current flowing through a primary winding of a power converter. The modulation and drive component is coupled to the signal generator.

公开(公告)号：US10211741B2

公开(公告)日：2019-02-19

申请号：US15711867

申请日：2017-09-21

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： Yuan Lin ,  Zhiqiang Sun ,  Weihua Wang ,  Lieyi Fang

IPC: H02M3/335 ,  H02M3/325

Abstract: Systems and methods are provided for voltage regulation of power conversion systems. An example system controller includes: a first sampling component configured to sample a sensing signal and determine a compensation signal based on at least in part on the sensing signal, the sensing signal being associated with a first current flowing through a primary winding of a power conversion system; a signal processing component configured to receive a feedback signal and the compensation signal and generate a first signal based at least in part on the feedback signal and the compensation signal, the feedback signal being associated with an auxiliary winding coupled with a secondary winding of the power conversion system; an error amplifier configured to receive the first signal and a reference signal and generate an amplified signal based at least in part on the first signal and the reference signal.

公开(公告)号：US10211740B2

公开(公告)日：2019-02-19

申请号：US15429011

申请日：2017-02-09

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： Liqiang Zhu ,  Jiqing Yang ,  Yaozhang Chen ,  Zhuoyan Li ,  Qiang Luo ,  Lieyi Fang

IPC: H02M3/335 ,  H02M1/08 ,  H05B33/08 ,  H02M1/36 ,  H02M1/00

Abstract: Systems and methods are provided for signal processing. An example error amplifier for processing a reference signal and an input signal associated with a current of a power conversion system includes a first operational amplifier, a second operational amplifier, a first transistor, a second transistor, a current mirror component, a switch, a first resistor and a second resistor. The first operational amplifier includes a first input terminal, a second input terminal and a first output terminal, the first input terminal being configured to receive a reference signal. The first transistor includes a first transistor terminal, a second transistor terminal and a third transistor terminal, the first transistor terminal being configured to receive a first amplified signal from the first output terminal, the third transistor terminal being coupled to the second input terminal.

公开(公告)号：US10193443B2

公开(公告)日：2019-01-29

申请号：US15725228

申请日：2017-10-04

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： Yaming Cao ,  Dongze Yang ,  Qiang Luo ,  Lieyi Fang

IPC: H02M3/156 ,  G05F1/10 ,  H02M1/00

Abstract: System and method for regulating a power conversion system. For example, a system controller for regulating a power conversion system includes an amplifier, a variable-resistance component, a capacitor, and a modulation and drive component. The amplifier is configured to receive a reference signal and a feedback signal associated with an output signal of the power conversion system, the amplifier including an amplifier terminal. The variable-resistance component is associated with a first variable resistance value, the variable-resistance component including a first component terminal and a second component terminal, the first component terminal being coupled with the amplifier terminal. The capacitor includes a first capacitor terminal and a second capacitor terminal, the first capacitor terminal being coupled with the second component terminal. The modulation and drive component includes a first terminal and a second terminal, the first terminal being coupled with the amplifier terminal.

公开(公告)号：US20180351447A1

公开(公告)日：2018-12-06

申请号：US16014337

申请日：2018-06-21

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： XIANGKUN ZHAI ,  YUNCHAO ZHANG ,  JUN ZHOU ,  LIEYI FANG

IPC: H02M1/08 ,  H05B33/08 ,  H03K3/012 ,  H02M3/335 ,  H03K17/723 ,  H03K17/56 ,  H03K17/16 ,  H03K7/08 ,  H02M1/36 ,  H02M1/00

Abstract: Systems and methods are provided for regulating a power conversion system. An example system controller includes a first controller terminal and a second controller terminal. The first controller terminal is configured to receive a first signal associated with an input signal for a primary winding of a power conversation system. The second controller terminal is configured to output a drive signal to a switch to affect a first current flowing through the primary winding of the power conversion system, the drive signal being associated with an on-time period, the switch being closed during the on-time period. The system controller is configured to adjust a duration of the on-time period based on at least information associated with the first signal.

公开(公告)号：US10148189B2

公开(公告)日：2018-12-04

申请号：US15461283

申请日：2017-03-16

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： Yaming Cao ,  Qiang Luo ,  Lieyi Fang

IPC: H02M3/335 ,  H02M1/44

Abstract: System controller and method for regulating a power converter. For example, the system controller includes a first controller terminal and a second controller terminal. The system controller is configured to: receive, at the first controller terminal, an input signal; generate a drive signal based at least in part on the input signal, the drive signal being associated with an on-time period and an off-time period, the on-time period including a first beginning and a first end; and output, at the second controller terminal, the drive signal to a switch to close the switch during the on-time period and open the switch during the off-time period to affect a current associated with a secondary winding of the power converter. The system controller is further configured to detect a demagnetization period associated with the secondary winding based at least in part on the input signal.

公开(公告)号：US10116220B2

公开(公告)日：2018-10-30

申请号：US15385680

申请日：2016-12-20

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： Lieyi Fang

IPC: H02M3/335

Abstract: System and method are provided for protecting a power converter. The system includes a first comparator, and an off-time component. The first comparator is configured to receive a sensing signal and a first threshold signal and generate a first comparison signal based on at least information associated with the sensing signal and the first threshold signal, the power converter being associated with a switching frequency and further including a switch configured to affect the primary current. The off-time component is configured to receive the first comparison signal and generate an off-time signal based on at least information associated with the first comparison signal. The off-time component is further configured to, if the first comparison signal indicates the sensing signal to be larger than the first threshold signal in magnitude, generate the off-time signal to keep the switch to be turned off for at least a predetermined period of time.

公开(公告)号：US10069424B2

公开(公告)日：2018-09-04

申请号：US15835337

申请日：2017-12-07

Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

Inventor： Yuan Lin ,  Xiaomin Huang ,  Qiang Luo ,  Lieyi Fang

IPC: H02M3/335 ,  H02M1/00

Abstract: System and method for regulating a power conversion system. A system controller for regulating a power conversion system includes an operation-mode-selection component and a driving component. The operation-mode-selection component is configured to receive a first signal related to an output load of the power conversion system and a second signal related to an input signal received by the power conversion system and output a mode-selection signal based on at least information associated with the first signal and the second signal. The driving component is configured to receive the mode-selection signal and generate a drive signal based on at least information associated with the mode-selection signal, the driving signal corresponding to a switching frequency.