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公开(公告)号：US10826468B1
公开(公告)日：2020-11-03
申请号：US16718846
申请日：2019-12-18
Applicant: ASIAN POWER DEVICES INC.
Inventor： Ganghong Liu , Wei Tang
Abstract: An active damping circuit of dead time oscillation includes a damping unit, a main switch, a voltage biased unit, an auxiliary switch, and a voltage determining unit. The main switch is coupled to the damping unit. The voltage biased unit is coupled to the damping unit and the main switch, and the voltage biased unit provides a drive voltage to the main switch. The auxiliary switch is coupled to the voltage biased unit. The voltage determining unit is coupled to the auxiliary switch, the voltage biased unit, and the damping unit, and the voltage determining unit provides a threshold voltage. When a voltage across two ends of a winding of a transformer is less than the threshold voltage, the auxiliary switch is turned off so that the drive voltage turns on the main switch and enable the damping unit to suppress the dead time oscillation.
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公开(公告)号：US20160043630A1
公开(公告)日：2016-02-11
申请号：US14747747
申请日：2015-06-23
Applicant: ASIAN POWER DEVICES INC.
Inventor： TSUNG-LIANG HUNG , YEU-TORNG YAU
CPC classification number: H02M1/4225 , H02M2001/0058 , Y02B70/126 , Y02B70/1491 , Y02P80/112
Abstract: A passive soft-switching circuit of a power factor corrector is provided. The passive soft-switching circuit includes a power input terminal, a first inductor, a first diode, a power output terminal, a power switch and a buffer circuit. The first inductor has a first terminal and a second terminal, wherein the first terminal of the first inductor is electrically coupled with the power input terminal. The first diode has a positive terminal and a negative terminal, wherein the positive terminal of the first diode is electrically coupled with the second terminal of the first inductor. The power output terminal is electrically coupled with the negative terminal of the first diode. The buffer circuit is electrically coupled with the power switch. By using the buffer circuit, the voltage and current have phase interlacing shifts and thereby reducing the switching loss.
Abstract translation: 提供功率因数校正器的无源软开关电路。 无源软开关电路包括电源输入端子，第一电感器，第一二极管，功率输出端子，电源开关和缓冲电路。 第一电感器具有第一端子和第二端子，其中第一电感器的第一端子与电力输入端子电耦合。 第一二极管具有正极端子和负极端子，其中第一二极管的正极端子与第一电感器的第二端子电耦合。 电源输出端子与第一二极管的负极端子电连接。 缓冲电路与电源开关电耦合。 通过使用缓冲电路，电压和电流具有相位交错位移，从而降低开关损耗。
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公开(公告)号：US08556642B2
公开(公告)日：2013-10-15
申请号：US13247367
申请日：2011-09-28
Applicant: Yu-Ci Lai , Chuei-Hang Ciou , Da-Wei Lee
Inventor： Yu-Ci Lai , Chuei-Hang Ciou , Da-Wei Lee
IPC: H01R29/00
CPC classification number: H01R24/68 , H01R13/6277 , H01R13/6675
Abstract: A power supply structure includes a main body and a plug. The main body has a circular containing space, a cylinder and a plurality of conducting plates. The cylinder has a retaining plane and at least one annular groove. The plug has a plug seat and a first cylinder. The first cylinder has a protrusion and at least one elastic device on an inner side of the bottom of the first cylinder. The elastic device has a resilient arm and a pressing member. The annular groove has a stop block and a fixing space. The protrusion is provided and placed into the annular groove, so that the plug can be fixed into the main body.
Abstract translation: 电源结构包括主体和插头。 主体具有圆形容纳空间，圆筒和多个导电板。 气缸具有保持平面和至少一个环形凹槽。 插头具有插头座和第一气缸。 第一气缸在第一气缸的底部的内侧具有突起和至少一个弹性装置。 弹性装置具有弹性臂和按压部件。 环形槽具有止动块和固定空间。 突起被设置并放置在环形槽中，使得插头可以固定到主体中。
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公开(公告)号：USD647476S1
公开(公告)日：2011-10-25
申请号：US29392826
申请日：2011-05-26
Applicant: Chuei-Hang Ciou
Designer： Chuei-Hang Ciou
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公开(公告)号：US20090153066A1
公开(公告)日：2009-06-18
申请号：US12001724
申请日：2007-12-12
Applicant: Cheng-Chang Yang , Guang-Ming Lei , Yu-Chi Lai
Inventor： Cheng-Chang Yang , Guang-Ming Lei , Yu-Chi Lai
IPC: H05B39/00
CPC classification number: H05B33/0827 , H05B33/0815
Abstract: A light emitting diode (LED) circuit having even current has multiple LED strings, a current equalizing integrated circuit (IC) and a voltage compensation module. The LED strings are connected to an external power source, and each LED string has a power terminal and a driving terminal. The current equalizing IC has multiple driving pins connected respectively to the driving terminals of the LED strings. The voltage compensation module is connected between the LED strings and the external power source and has a threshold voltage value and multiple input terminals. The input terminals are connected respectively to the driving pins of the current equalizing IC to allow the voltage compensation module rise and send the voltage obtained from the external power source to the LED strings when the voltage compensation module determines any voltage on the driving pins of the current equalizing IC is lower than the threshold voltage value.
Abstract translation: 具有均匀电流的发光二极管（LED）电路具有多个LED串，电流均衡集成电路（IC）和电压补偿模块。 LED串连接到外部电源，每个LED串具有电源端子和驱动端子。 电流均衡IC具有分别连接到LED串的驱动端子的多个驱动引脚。 电压补偿模块连接在LED串和外部电源之间，并具有阈值电压值和多个输入端子。 输入端子分别连接到电流均衡IC的驱动引脚，以允许电压补偿模块上升并将从外部电源获得的电压发送到LED串，当电压补偿模块确定驱动引脚上的任何电压时 电流均衡IC低于阈值电压值。
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Patent Agency Ranking
公开(公告)号：US20220069730A1
公开(公告)日：2022-03-03
申请号：US17125376
申请日：2020-12-17
Applicant: ASIAN POWER DEVICES INC.
Inventor： Yeu-Torng YAU , Tsung-Liang HUNG
Abstract: A network communication power supply with digital signal isolation includes a transformer, a transformer drive circuit, a rectifier, and a modulation signal duty cycle detection circuit. The transformer has a primary side and a secondary side. The transformer drive circuit is coupled to the primary side, and receives a digital signal input. The transformer drive circuit converts the digital signal input into a drive signal with a duty cycle corresponding to a logic level of the digital signal input according to the logic level. The digital signal input includes a power content. The rectifier is coupled to the secondary side and converts the power content to provide a power source. The modulation signal duty cycle detection circuit is coupled to the rectifier and supplied power by the power source, and provides a digital signal output with a high or low level according to the duty cycle.
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公开(公告)号：US11056970B1
公开(公告)日：2021-07-06
申请号：US16821681
申请日：2020-03-17
Applicant: ASIAN POWER DEVICES INC.
Inventor： Yeu-Torng Yau , Tsung-Liang Hung
Abstract: A bridgeless step-up and step-down AC-to-DC converter is used to convert an AC input power source into a DC output power source. The converter includes a first circuit, a second circuit, a third circuit, a third diode, and a fourth diode. The first circuit has a first end, a second send, and a third end; the first end is coupled to the AC input power source, the second end is coupled to a ground end, and the third end is coupled to the DC output power source. The second circuit has a first end, a second end, and a third end; the first end is coupled to the AC input power source, the second end is coupled to the ground end, and the third end is coupled to the DC output power source.
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公开(公告)号：US10886907B1
公开(公告)日：2021-01-05
申请号：US16717371
申请日：2019-12-17
Applicant: ASIAN POWER DEVICES INC.
Inventor： Yeu-Torng Yau , Tsung-Liang Hung
Abstract: A method of controlling a resolution of digital pulse width modulation is applied to a digital pulse width modulation generator. The method is to divide a value of a first duty clock by a value of a first pulse width modulation period clock to generate a first resolution. And then, if it is confirmed that a modulation command has been received, a second resolution is generated, and if it is confirmed that the modulation command is not received, a third resolution is generated. The second resolution is greater than the first resolution, and the second resolution is less than the third resolution.
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公开(公告)号：US10270351B1
公开(公告)日：2019-04-23
申请号：US15920891
申请日：2018-03-14
Applicant: ASIAN POWER DEVICES INC.
Inventor： Kai-Yuan Shi , Hai-Ping Ding
IPC: H02M3/335
Abstract: An EMI-radiation suppression circuit is applied to a power converter having a main power switch. The EMI-radiation suppression circuit includes a control unit, a drive selection unit, and a switch unit. The drive selection unit is coupled between the control unit and the main power switch, and which provides at least two drive terminals. One drive terminal is coupled to the control unit and another drive terminal is coupled to the main power switch. The switch unit is coupled between one of the at least two drive terminals and a ground to receive a feedback control signal. When the feedback control signal activates the switch unit, the ground is coupled to the drive terminal to which the switch unit is coupled. Grounding the gate terminal suppresses the EMI and maintains operational efficiency of the power converter.
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公开(公告)号：US09954457B2
公开(公告)日：2018-04-24
申请号：US15683508
申请日：2017-08-22
Applicant: ASIAN POWER DEVICES INC.
Inventor： Chih-Yuan Hsu
CPC classification number: H02M3/3385 , H02M1/32 , H02M3/156 , H02M3/1588 , H02M3/33523 , H02M7/217
Abstract: An overvoltage protection circuit adapted for a switching power supply is provided. The overvoltage protection circuit can use the time difference of the start of the overvoltage protection to distinguish that the overvoltage of the output voltage of the switching power supply is caused by the failure of the internal feedback or by the internal power supply, thereby avoiding a short and harmless external power supply to affect the normal operation of the switching power supply but can immediately stop the switching power supply to achieve protection when the switching power supply has an internal feedback failure.
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