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公开(公告)号：US20240364222A1
公开(公告)日：2024-10-31
申请号：US18643731
申请日：2024-04-23
Inventor： Yanmei GUO , Zhen ZHU , Yucai YANG
CPC classification number: H02M3/33507 , H02M1/36
Abstract: A controller, an isolated power converter and a control method are disclosed. The controller includes a primary-side regulator and a secondary-side regulator. The secondary-side regulator includes a secondary-side regulation signal generation module, which receives a feedback signal of an output voltage of the isolated power converter, generates a first control signal and couples the first control signal to the primary-side regulator. The primary-side regulator includes: a PSR module, which receives a voltage signal across a winding of the isolated power converter and generates a second control signal, thereby executing a PSR mode; a follow-up SSR module, which receives the first control signal and generates a third control signal, thereby executing an SSR mode; and a regulation switching module, which allows a switching between the PSR and SSR modes. The present invention allows the follow-up SSR module to enable the SSR mode, which avoids overshooting of the output voltage during startup.
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公开(公告)号：US20240356360A1
公开(公告)日：2024-10-24
申请号：US18757436
申请日：2024-06-27
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chengui Zhang , Tiansheng Wang , Shengwei Wang , Jianli Chen
CPC classification number: H02J7/06 , H02J7/0014 , H02M3/33507 , H02M3/33573
Abstract: Provided are a battery regulation system and method and an electrical device thereof. The battery regulation system is applied to a vehicle comprising a first motor and a second motor; and the battery regulation system comprises a battery module, a regulation module, and a control module, wherein the regulation module is electrically connected to the battery module and the control module; the battery module comprises a first battery and a second battery, the first battery and the second battery being connected in series, wherein the first battery is used for powering the first motor and the second battery is used for powering the second motor; and the control module is used for controlling the regulation module to regulate the states of charge of the first battery and the second battery when the states of charge of the first battery and the second battery are not consistent.
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公开(公告)号：US12126250B2
公开(公告)日：2024-10-22
申请号：US17805536
申请日：2022-06-06
Applicant: AA Power Inc.
Inventor： Qun Lu
CPC classification number: H02M1/0096 , H02J9/061 , H02M3/33507 , H02M3/33538 , H02M7/219 , G06F1/263 , H02M1/32 , H02M1/36 , H02M1/4225
Abstract: A dual-input power conversion system includes a first primary side power network comprising a first hold-up capacitor, wherein the first primary side power network has inputs configured to be coupled to a first power source, and outputs coupled to a transformer, a second primary side power network comprising a second hold-up capacitor, wherein the second primary side power network has inputs configured to be coupled to a second power source, and outputs coupled to the transformer, and a secondary side power network having inputs coupled to a secondary side of the transformer, and outputs coupled to a load, wherein the first primary side power network and the second primary side power network are configured such that a voltage across one of the first hold-up capacitor and the second hold-up capacitor is maintained by a voltage reflected from the secondary side to a corresponding primary side.
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公开(公告)号：US12119749B2
公开(公告)日：2024-10-15
申请号：US17974437
申请日：2022-10-26
Applicant: Joulwatt Technology Co., Ltd.
Inventor： Guoqiang Liu , Yingyan He
IPC: H02M3/335
CPC classification number: H02M3/33507
Abstract: A flyback converter, a constant-current control method, and a lighting system are provided. The constant-current control method includes: sampling a loop current in a resonant loop to obtain a first sampling signal; obtaining zero crossing time of an excitation current in the resonant loop; and turning off a first switch tube when the first sampling signal reaches a reference value, and turning off a second switch tube after the zero crossing time of the excitation current in the resonant loop to control an average value of the excitation current to keep constant. The present disclosure can achieve a constant average value of an excitation current in each switching cycle based on a loop current in a resonant loop on the primary side of the converter, thereby realizing constant-current control of an output current of the converter.
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5.发明公开公开(公告)号：US20240322694A1
公开(公告)日：2024-09-26
申请号：US18598849
申请日：2024-03-07
Applicant: Maxim Integrated Products, Inc.
Inventor： Alexandr Ikriannikov
CPC classification number: H02M3/33507 , H02M1/0064 , H02M1/0095 , H02M1/14 , H02M1/40
Abstract: A two-stage switching power converter includes a first power stage, a second power stage electrically coupled in series with the first power stage, and a controller. The first power stage includes a first power transfer winding, and the second power stage includes a second power transfer winding that is magnetically coupled to the first power transfer winding. The controller is configured to (a) control switching of the second power stage to regulate at least one parameter of the two-stage switching power converter and (b) control switching of the first power stage such that the first power stage switches in a complementary manner with respect to the second power stage.
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Patent Agency Ranking
公开(公告)号：US12095380B2
公开(公告)日：2024-09-17
申请号：US17972354
申请日：2022-10-24
Applicant: FUJI ELECTRIC CO., LTD.
Inventor： Shinji Matsumoto
CPC classification number: H02M3/3385 , H02M3/33507 , H02M1/36
Abstract: An integrated circuit for a power supply circuit including a transistor configured to control a current flowing through a coil. The integrated circuit is configured to drive the transistor. The integrated circuit includes: a determination circuit configured to determine whether a predetermined time period has elapsed since a power supply voltage of the integrated circuit rises to a first predetermined level; an oscillator circuit configured to output an oscillator signal, which has a first frequency before lapse of the predetermined period, and changes in a range at least from the first frequency to a second frequency higher than the first frequency after the lapse of the predetermined time period; and a driver circuit configured to switch the transistor responsive to the oscillator signal during and after the predetermined time period, the switching causing an on period of the transistor to gradually increase in the predetermined time period.
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公开(公告)号：US12088193B2
公开(公告)日：2024-09-10
申请号：US18477969
申请日：2023-09-29
Applicant: Lutron Technology Company LLC
Inventor： Steven J. Kober , Soma Sekhara Rao Konijeti , Rajesh Krishna Thottumkara , Keertana Veeranki
IPC: H05B45/14 , H02M1/36 , H05B45/3725 , H05B45/385 , H05B47/165 , H02M3/335 , H05B45/375 , H05B45/38
CPC classification number: H02M1/36 , H05B45/14 , H05B45/3725 , H05B45/385 , H05B47/165 , H02M3/33507 , H05B45/375 , H05B45/38
Abstract: A load control device may be configured to turn on lighting loads to obtain a fast turn-on time that may be substantially consistent across lighting loads that have different load voltages. The load control device may comprise a power converter circuit configured to produce a voltage across a capacitor, and a control circuit configured to control the power converter circuit to generate the voltage across the capacitor. The control circuit may determine a learned voltage from the magnitude of the voltage across the capacitor. For example, the control circuit may measure the magnitude of the voltage and store the measured voltage as the learned voltage. The control circuit may determine an operating parameter for the power converter circuit as a function of the learned voltage, and control the power converter circuit according to the operating parameter to charge the capacitor until the magnitude of the voltage exceeds a threshold.
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公开(公告)号：US20240297579A1
公开(公告)日：2024-09-05
申请号：US18645752
申请日：2024-04-25
Applicant: CSIP CONSULTING LTD.
Inventor： Young Seung NOH , Kwang Soo CHOI , Bo Mi LEE , Chan Sung JANG
CPC classification number: H02M3/04 , H02M3/33507 , G06F1/26 , H02M1/0025
Abstract: A power supply system may include a target device and an adapter. The target device may include an adapter connection switch that receives adapter recognition information to form a connection with the adapter, a voltage detection unit that receives an output voltage from an adapter, and a voltage-change-requesting unit that outputs a voltage to request a voltage change based on information on the output voltage from the adapter. The adapter may include a device information recognition unit that receives the voltage to request a voltage change, and an output-voltage-changing unit that changes the output voltage based on the voltage to request a voltage change.
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公开(公告)号：US12081129B2
公开(公告)日：2024-09-03
申请号：US17799449
申请日：2020-10-29
Applicant: Rohm Co., Ltd.
Inventor： Yoshinori Sato , Satoru Nate
CPC classification number: H02M3/33507 , H02M1/08
Abstract: A power control device includes a mode setter configured to effect a change from a normal mode to a low-power mode upon detecting a light load in a burst operation, and a minimum on-period setter configured to, in response to a change to the low-power mode, change the minimum on-period of the switching transistor from a first minimum on-period to a second minimum on-period longer than the first minimum on-period.
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公开(公告)号：US20240243665A1
公开(公告)日：2024-07-18
申请号：US18156055
申请日：2023-01-18
Applicant: Monolithic Power Systems, Inc.
Inventor： Vipin Pala
CPC classification number: H02M3/33507 , H02M1/08
Abstract: A composite switch circuit having a normally-on power switch device and a normally-off power switch device in cascode configuration is discussed. The composite switch circuit is with reduced power loss by biasing a common connection of the source terminal of the normally-on power switch device and the drain terminal of the normally-off power switch device with a low voltage supply during a reverse recovery process of the composite switch circuit.
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