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1. 发明申请

US20210367525A1 RESONANT CONVERTER, CONTROL CIRCUIT AND CONTROL METHOD 有权
公开(公告)号：US20210367525A1
公开(公告)日：2021-11-25
申请号：US17316902
申请日：2021-05-11
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Jian Deng , Nan Luo , Yunlong Han , Zhaofeng Wang
IPC分类号： H02M3/335 , H02M1/00
摘要： A control circuit for a resonant converter, that is configured to: adjust a conduction time of one power switch and a conduction time of one corresponding synchronous rectifier switch in the resonant converter in a resonant period detection mode; control a resonance current to cross zero twice during the conduction time of the synchronous rectifier switch; and obtain a resonant period of the resonant converter.

2. 发明申请

US20190097528A1 POWER FACTOR CORRECTION CIRCUIT, CONTROL METHOD AND CONTROLLER 审中-公开
公开(公告)号：US20190097528A1
公开(公告)日：2019-03-28
申请号：US16206161
申请日：2018-11-30
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Zhaofeng Wang , Xiaodong Huang , Chen Zhao
IPC分类号： H02M1/42 , H02M1/12
CPC分类号： H02M1/4225 , H02M1/12 , H02M2001/0025 , Y02B70/126 , Y02P80/112
摘要： A power factor correction circuit can include: a power meter configured to measure THD at an input port; a switching-type regulator that is controllable by a switching control signal in order to adjust a power factor of an input signal thereof; and a controller configured to generate the switching control signal to control the switching-type regulator to perform power factor correction, where the controller minimizes the THD by adjusting a current reference signal according to a measured THD, and the current reference signal represents an expected inductor current of the switching-type regulator.

3. 发明授权

US11736028B2 Resonant converter, control circuit and control method 有权
公开(公告)号：US11736028B2
公开(公告)日：2023-08-22
申请号：US17316902
申请日：2021-05-11
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Jian Deng , Nan Luo , Yunlong Han , Zhaofeng Wang
IPC分类号： H02M3/335 , H02M1/00
CPC分类号： H02M3/33592 , H02M1/0058
摘要： A control circuit for a resonant converter, that is configured to: adjust a conduction time of one power switch and a conduction time of one corresponding synchronous rectifier switch in the resonant converter in a resonant period detection mode; control a resonance current to cross zero twice during the conduction time of the synchronous rectifier switch; and obtain a resonant period of the resonant converter.

4. 发明申请

US20170373354A1 METHOD AND DEVICE FOR DETECTING STATES OF BATTERY AND BATTERY PACK 审中-公开
公开(公告)号：US20170373354A1
公开(公告)日：2017-12-28
申请号：US15631118
申请日：2017-06-23
申请人： Silergy Semiconductor Technology (Hangzhou) Ltd.
发明人： Xiaodong Huang , Zhaofeng Wang
IPC分类号： H01M10/48 , H01M2/20 , G01R19/00 , G01R31/36 , H01M10/44 , H01M10/42
CPC分类号： H01M10/48 , G01R19/0069 , G01R31/364 , G01R31/367 , G01R31/3832 , G01R31/3842 , H01M2/202 , H01M10/4285 , H01M10/446
摘要： Disclosed is a method and a device for detecting states of a battery and a battery pack. The disclosure obtains a first state of charge and a second state of charge of the battery by use of a charge calculation method and a method based on battery model, respectively. The charge calculation method is more accurate when the charge-discharge current is large and the method based on battery model performs better in handling a small current, so that a chemistry state of charge obtained by performing a weighted calculation for the first state of charge and the second state of charge can represent the real state of charge of the battery more precisely. The disclosure settles the difficulty on parameter extraction of the conventional model method, eliminates the influence of the accumulated error of the charge calculation method, and combines the advantages of the method based on the battery model and the coulometer method.

5. 发明申请

US20160295648A1 LED DRIVING CIRCUIT 有权
标题翻译： LED驱动电路
公开(公告)号：US20160295648A1
公开(公告)日：2016-10-06
申请号：US15060762
申请日：2016-03-04
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Zhaofeng Wang
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , H05B33/083
摘要： In one embodiment an LED driving circuit can include: (i) a rectifier circuit configured to receive an AC input power supply through a TRIAC, and to generate a bus voltage; (ii) a driving current generator configured to convert the bus voltage to a constant driving current and an output voltage to drive an LED load; and (iii) a current distribution circuit coupled between a positive pole and a negative pole of the bus voltage, where the current distribution circuit is configured to sample an input current to generate a sense signal, and to compare the sense signal against a voltage reference signal that represents an expected input current, so as to regulate the input current according to the voltage reference signal.
摘要翻译：在一个实施例中，LED驱动电路可以包括：（i）整流器电路，被配置为通过TRIAC接收AC输入电源，并产生总线电压; （ii）驱动电流发生器，被配置为将总线电压转换成恒定的驱动电流和输出电压以驱动LED负载; 和（iii）耦合在总线电压的正极和负极之间的电流分配电路，其中电流分配电路被配置为对输入电流进行采样以产生感测信号，并且将感测信号与电压参考值进行比较信号，表示预期的输入电流，以便根据电压参考信号调节输入电流。

6. 发明授权

US11831247B2 Resonant converter, control circuit and control method 有权
公开(公告)号：US11831247B2
公开(公告)日：2023-11-28
申请号：US17316902
申请日：2021-05-11
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Jian Deng , Nan Luo , Yunlong Han , Zhaofeng Wang
IPC分类号： H02M3/335 , H02M1/00
CPC分类号： H02M3/33592 , H02M1/0058
摘要： A control circuit for a resonant converter, that is configured to: adjust a conduction time of one power switch and a conduction time of one corresponding synchronous rectifier switch in the resonant converter in a resonant period detection mode; control a resonance current to cross zero twice during the conduction time of the synchronous rectifier switch; and obtain a resonant period of the resonant converter.

7. 发明授权

US11226648B2 Power factor correction circuit, control method and controller 有权
公开(公告)号：US11226648B2
公开(公告)日：2022-01-18
申请号：US16882614
申请日：2020-05-25
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Zhaofeng Wang , Xiaodong Huang , Chen Zhao
IPC分类号： G05F1/70 , G01R21/00 , H02M1/12 , H02M1/42
摘要： A power factor correction circuit includes a power meter configured to measure a total harmonic distortion (THD) at an input port; a switching-type regulator that is controllable by a switch control signal in order to adjust a power factor; and a controller configured to generate the switch control signal to control the switching-type regulator to perform power factor correction, where the controller adjusts an on-time of a main switch of the switching-type regulator based on the measured THD to decrease the THD.

8. 发明申请

US20200379496A1 POWER FACTOR CORRECTION CIRCUIT, CONTROL METHOD AND CONTROLLER 审中-公开
公开(公告)号：US20200379496A1
公开(公告)日：2020-12-03
申请号：US16882614
申请日：2020-05-25
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Zhaofeng Wang , Xiaodong Huang , Chen Zhao
IPC分类号： G05F1/70 , G01R21/00
摘要： A power factor correction circuit includes a power meter configured to measure a total harmonic distortion (THD) at an input port; a switching-type regulator that is controllable by a switch control signal in order to adjust a power factor; and a controller configured to generate the switch control signal to control the switching-type regulator to perform power factor correction, where the controller adjusts an on-time of a main switch of the switching-type regulator based on the measured THD to decrease the THD.

9. 发明授权

US09491817B2 LED driving circuit 有权
标题翻译： LED驱动电路
公开(公告)号：US09491817B2
公开(公告)日：2016-11-08
申请号：US15060762
申请日：2016-03-04
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Zhaofeng Wang
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , H05B33/083
摘要： In one embodiment an LED driving circuit can include: (i) a rectifier circuit configured to receive an AC input power supply through a TRIAC, and to generate a bus voltage; (ii) a driving current generator configured to convert the bus voltage to a constant driving current and an output voltage to drive an LED load; and (iii) a current distribution circuit coupled between a positive pole and a negative pole of the bus voltage, where the current distribution circuit is configured to sample an input current to generate a sense signal, and to compare the sense signal against a voltage reference signal that represents an expected input current, so as to regulate the input current according to the voltage reference signal.
摘要翻译：在一个实施例中，LED驱动电路可以包括：（i）整流器电路，被配置为通过TRIAC接收AC输入电源，并产生总线电压; （ii）驱动电流发生器，被配置为将总线电压转换成恒定的驱动电流和输出电压以驱动LED负载; 和（iii）耦合在总线电压的正极和负极之间的电流分配电路，其中电流分配电路被配置为对输入电流进行采样以产生感测信号，并且将感测信号与电压参考值进行比较信号，表示预期的输入电流，以便根据电压参考信号调节输入电流。

10. 发明授权

US11509238B2 AC/DC power supply, rectifier circuit and control method 有权
公开(公告)号：US11509238B2
公开(公告)日：2022-11-22
申请号：US17202514
申请日：2021-03-16
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Nan Luo , Qiukai Huang , Jian Deng , Zhaofeng Wang , Jialiang Zhang
IPC分类号： H02M7/06 , H02M1/14 , H02M1/15
摘要： A rectifier circuit applied in an AC/AC power supply, the rectifier circuit including: a filter circuit configured to receive a DC pulsating voltage, and to generate a supply voltage, where the supply voltage follows the DC pulsating voltage during a first time interval of an operation cycle; and where during a second time interval of the operation cycle, a value of the supply voltage is greater than the value of the supply voltage at an end of the first time interval, in order to reduce a size of the filter circuit.

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