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公开(公告)号：US10951120B2
公开(公告)日：2021-03-16
申请号：US16362852
申请日：2019-03-25
发明人： Huiqiang Chen
摘要： The disclosure relates to a flyback converter, a control circuit and a control method therefor. In the control method, a power stage circuit is controlled at a light load to operate alternatively in a pulse-width modulation mode (e.g., a constant switching frequency mode) and in a constant on time mode, in accordance with a voltage compensation signal. Thus, output energy may decrease rapidly and smoothly, without need for the control circuit to stop working. The flyback converter has increased efficiency at the light load and decreased output voltage ripple.
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公开(公告)号：US10928047B2
公开(公告)日：2021-02-23
申请号：US16366241
申请日：2019-03-27
IPC分类号： H01L25/16 , F21V23/00 , H01L25/075 , H05B45/37 , F21Y115/10 , H02M3/335
摘要： A package for a power supply circuit and an LED illumination module are provided. The package includes: a first package body, configured to package a power device, a control chip and a passive element; an inductive element; a connector configured to connect an electrode of the inductive element to a corresponding electrode of the power device; an encapsulant configured to encapsulate the first package body, the inductive element and the connector; and multiple pins exposed through the encapsulant and configured to achieve external electrical connection. In the package, the control chip, the inductive element and the passive element are packaged together, thereby reducing an area occupied by the drive circuit in the LED illumination module.
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公开(公告)号：US20210045212A1
公开(公告)日：2021-02-11
申请号：US16940573
申请日：2020-07-28
发明人： Hongbin Lai , Jianxin Wang
IPC分类号： H05B45/3725 , H05B45/10
摘要： A method of controlling a power convertor to perform dimming control for a light-emitting diode (LED) load, can include: adjusting a length of a switching period of the power converter in accordance with a dimming signal; and controlling the power converter to generate a drive current corresponding to the dimming signal.
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64.发明授权公开(公告)号：US10903340B2
公开(公告)日：2021-01-26
申请号：US16413792
申请日：2019-05-16
发明人： Budong You , Hui Yu , Meng Wang , Yicheng Du , Chuan Peng , Xianguo Huang
摘要： A laterally diffused metal oxide semiconductor structure can include: a base layer; a source region and a drain region located in the base layer; first dielectric layer located on a top surface of the base layer and adjacent to the source region; a voltage withstanding layer located on the top surface of the base layer and located between the first dielectric layer and the drain region; a first conductor at least partially located on the first dielectric layer; and a second conductor at least partially located on the voltage withstanding layer, where the first and second conductors are spatially isolated, and a juncture region of the first dielectric layer and the voltage withstanding layer is covered by one of the first and second conductors.
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公开(公告)号：US10886845B2
公开(公告)日：2021-01-05
申请号：US16737466
申请日：2020-01-08
发明人： Bo Cai
摘要： Detecting an output voltage of a switching power supply can include: acquiring a first branch current that changes with a first voltage at a first terminal of an inductor of the switching power supply; acquiring a second branch current that changes with a second voltage at a second terminal of the inductor; controlling the first and second branch currents to flow to a same detection terminal; and detecting the output voltage based on a first current flowing through the detection terminal during a first time period, and a second current flowing through the detection terminal during a second time period.
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公开(公告)号：US10863601B2
公开(公告)日：2020-12-08
申请号：US16407443
申请日：2019-05-09
发明人： Huiqiang Chen , Zhishuo Wang , Jianxin Wang
摘要： A detection circuit configured to detect the presence of a TRIAC dimmer for an LED driver, can include: a sampling circuit configured to receive a DC bus voltage, and to generate a voltage sampling signal that characterizes the DC bus voltage; and a detector configured to determine whether the LED driver is provided with the TRIAC dimmer in accordance with a duration of the voltage sampling signal being continuously greater than a first reference voltage.
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公开(公告)号：US10833413B2
公开(公告)日：2020-11-10
申请号：US16110261
申请日：2018-08-23
发明人： Yupang Chou , Chuohsun Sun
摘要： A communication device comprises a plurality of antennas, a sensing unit, a plurality of radio frequency circuits, and a sensing module. The sensing unit is electrically connected to the ground through at least one grounding capacitor, and the sensing unit is further configured to isolate and be coupled to each antenna. Each the radio frequency circuit is electrically connected to the corresponding each antenna. The sensing module is electrically connected to the sensing unit through an inductor, wherein the sensing module is used to sense the distance between the sensing unit and an external object by the sensing unit, and the sensing module generates a distance signal according to the distance.
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68.发明授权公开(公告)号：US10819155B2
公开(公告)日：2020-10-27
申请号：US16100678
申请日：2018-08-10
IPC分类号： H02J50/12
摘要： A resonance contactless power supply device can include: (i) a converter configured to convert an input power signal to an adjustable DC voltage; (ii) an inverter configured to receive the adjustable DC voltage, and to generate an AC voltage with a leakage inductance resonance frequency; (iii) a first resonance circuit having a transmitting coil, and being configured to receive the AC voltage from the inverter; (iv) a second resonance circuit comprising a receiving coil that is contactlessly coupled to the transmitting coil, where the second resonance circuit is configured to receive electric energy from the transmitting coil; and (v) a control circuit configured to control the adjustable DC voltage according to a phase difference between the AC voltage and an AC current output by the inverter, such that the phase difference is maintained as a predetermined angle.
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公开(公告)号：US10763241B2
公开(公告)日：2020-09-01
申请号：US15283573
申请日：2016-10-03
发明人： Xiaochun Tan
摘要： A stacked package structure for a chip, can include: a substrate having a first surface and a second surface opposite thereto; a first die having an active and back faces, where the active face of the first die includes pads; a first enclosure that covers the first die; an interlinkage that extends to the first enclosure to electrically couple with the pads; a first redistribution body electrically coupled to the interlinkage, and being partially exposed on a surface of the stacked package structure to provide outer pins for electrically coupling to external circuitry; a penetrating body that penetrates the first enclosure and substrate; a second die having an electrode electrically coupled to a first terminal of the penetrating body; and a second terminal of the penetrating body that is exposed on the surface of the stacked package structure to provide outer pins for electrically coupling to the external circuitry.
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公开(公告)号：US10734905B2
公开(公告)日：2020-08-04
申请号：US16196679
申请日：2018-11-20
发明人： Chen Zhao , Wang Zhang
摘要： A DC-DC converter can include: a switched capacitor converter including at least one switch group and at least one capacitor, where each of the at least one switch group includes two switches are coupled in series, and at least one of the capacitors is coupled in parallel with a corresponding one of the switch groups; and at least one switch converter, where each switch converter includes at least one primary magnetic circuit and is configured to share at least one of the switch groups, one terminal of the primary magnetic circuit is coupled to an intermediate node of the shared switch group, the intermediate node is a common coupling point of two switches of the shared switch group, and the switch converter is an unidirectional power converter.
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