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1. 发明公开

US20230198635A1 DIGITAL ISOLATOR 审中-公开
公开(公告)号：US20230198635A1
公开(公告)日：2023-06-22
申请号：US18074720
申请日：2022-12-05
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Yufei Dong , Xiaodong Huang , Chen Zhao
IPC分类号： H04B10/80 , H03F3/45 , H04L25/49
CPC分类号： H04B10/802 , H03F3/45 , H04L25/49
摘要： A digital isolator can include: an encoding circuit configured to receive an input digital signal, and to generate an encoded signal according to the input digital signal; an isolation element having a primary winding, a first secondary winding, and a second secondary winding; a differential circuit configured to receive first and second differential signals, and to generate a difference signal according to the first and second differential signals; and a decoding circuit coupled with the differential circuit, and being configured to receive the difference signal, and to generate a target digital signal after decoding.

2. 发明授权

US10396655B2 Power factor correction circuit, control method and controller 有权
公开(公告)号：US10396655B2
公开(公告)日：2019-08-27
申请号：US15911376
申请日：2018-03-05
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Chen Zhao , Zhaofeng Wang , Xiaodong Huang
IPC分类号： H02M1/42 , H02M1/44 , H02M1/00 , H05B33/08
摘要： A power factor correction circuit can include: a power meter configured to measure a power factor at an input port; a switching-type regulator that is controllable by a switching control signal in order to adjust the power factor of an input AC power; an EMI filter disposed between the switching-type regulator and the input port; and a controller configured to generate the switching control signal to maximize the power factor by adjusting a current reference signal according to a measured power factor, where the current reference signal represents an expected inductor current of the switching-type regulator.

3. 发明申请

US20190253016A1 MOTOR DRIVE DEVICE, CONTROL METHOD AND MOTOR 审中-公开
公开(公告)号：US20190253016A1
公开(公告)日：2019-08-15
申请号：US16248935
申请日：2019-01-16
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Xiaodong Huang , Lei Shen
IPC分类号： H02P27/12 , H02P21/22 , H02P21/32
摘要： A motor drive device can include: a control circuit configured to adjust each phase current of a three-phase inverter of a motor; where the phase current of the three-phase inverter rises from zero to a first threshold during a first time interval; and where the phase current is controlled to drop gradually from the first threshold to zero during a second time interval in order to increase the second time interval.

4. 发明授权

US10193439B2 Power factor correction circuit, control method and controller 有权
公开(公告)号：US10193439B2
公开(公告)日：2019-01-29
申请号：US15911317
申请日：2018-03-05
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Zhaofeng Wang , Xiaodong Huang , Chen Zhao
IPC分类号： H02J3/36 , H02M1/42 , H02M1/12
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.

5. 发明申请

US20180278150A1 POWER FACTOR CORRECTION CIRCUIT, CONTROL METHOD AND CONTROLLER 审中-公开
公开(公告)号：US20180278150A1
公开(公告)日：2018-09-27
申请号：US15911376
申请日：2018-03-05
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Chen Zhao , Zhaofeng Wang , Xiaodong Huang
IPC分类号： H02M1/42 , H02M1/44
CPC分类号： H02M1/4225 , H02M1/44 , H05B33/0815 , Y02B70/126 , Y02P80/112
摘要： A power factor correction circuit can include: a power meter configured to measure a power factor at an input port; a switching-type regulator that is controllable by a switching control signal in order to adjust the power factor of an input AC power; an EMI filter disposed between the switching-type regulator and the input port; and a controller configured to generate the switching control signal to maximize the power factor by adjusting a current reference signal according to a measured power factor, where the current reference signal represents an expected inductor current of the switching-type regulator.

6. 发明申请

US20180269779A1 POWER FACTOR CORRECTION CIRCUIT, CONTROL METHOD AND CONTROLLER 审中-公开
公开(公告)号：US20180269779A1
公开(公告)日：2018-09-20
申请号：US15911317
申请日：2018-03-05
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.

7. 发明申请

US20170040921A1 VOLTAGE SENSE CONTROL CIRCUIT, VOLTAGE SENSE CONTROL DRIVING CIRCUIT AND DRIVING METHOD FOR PERMANENT MAGNET SYNCHRONOUS MOTOR 有权
标题翻译：用于永磁同步电机的电压感应控制电路，电压感应控制驱动电路及驱动方法
公开(公告)号：US20170040921A1
公开(公告)日：2017-02-09
申请号：US15200815
申请日：2016-07-01
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Xiaodong Huang , Xinghao Zhang
IPC分类号： H02P27/08 , H02P6/182
CPC分类号： H02P6/182 , H02P6/17 , H02P23/14
摘要： A driving circuit of a PMSM can include: a current sampling circuit that obtains a current sampling signal by sampling a rotor current of one phase of the PMSM; a sliding mode estimating circuit that receives the current sampling signal and a voltage sampling signal that represents a rotor voltage of the phase, estimates a back electromotive force information of the phase, and generates a first voltage signal that represents the back electromotive force information; a speed computing circuit that receives the first voltage signal, and generates an angular velocity signal that represents rotor cycle information; and a PWM control circuit that generates a PWM control signal according to the angular velocity signal, where the PWM control signal controls the turn on/off of switches in a three-phase inverter, to control an operating current of the PMSM to be a sine wave current.
摘要翻译： PMSM的驱动电路可以包括：电流采样电路，通过对PMSM的一相的转子电流进行采样来获得电流采样信号; 接收当前采样信号的滑模式估计电路和表示相位的转子电压的电压采样信号，估计该相的反电动势信息，并产生表示反电动势信息的第一电压信号; 速度计算电路，其接收所述第一电压信号，并生成表示转子周期信息的角速度信号; 以及PWM控制电路，其根据角速度信号生成PWM控制信号，其中PWM控制信号控制三相逆变器中的开关的导通/截止，以将PMSM的工作电流控制为正弦波电流。

8. 发明授权

US09525336B2 Harmonic control method and circuit for flyback switching power supply 有权
标题翻译：回扫开关电源谐波控制方法及电路
公开(公告)号：US09525336B2
公开(公告)日：2016-12-20
申请号：US14478126
申请日：2014-09-05
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Xiaodong Huang
IPC分类号： H02M3/335 , H02M1/42 , H02M1/00
CPC分类号： H02M1/4258 , H02M3/33507 , H02M2001/0025 , Y02B70/126
摘要： In one embodiment, harmonic control method for a flyback switching power supply, can include: (i) generating a sense voltage signal based on an output signal of the flyback switching power supply; (ii) generating a first compensation signal by determining and compensating an error between the sense voltage signal and a reference voltage; (iii) generating a second compensation signal by regulating the first compensation signal based on a duty cycle of a main power switch in the flyback switching power supply; and (iv) generating a control signal based on the second compensation signal and a triangular wave signal, to control the main power switch such that the output signal is substantially constant and an input current follows a waveform variation of an input voltage of the flyback switching power supply.
摘要翻译：在一个实施例中，用于反激式开关电源的谐波控制方法可以包括：（i）基于反激式开关电源的输出信号产生感测电压信号; （ii）通过确定和补偿感测电压信号和参考电压之间的误差来产生第一补偿信号; （iii）通过基于所述回扫开关电源中的主电源开关的占空比来调节所述第一补偿信号来产生第二补偿信号; 以及（iv）基于第二补偿信号和三角波信号产生控制信号，以控制主电源开关，使得输出信号基本上恒定，并且输入电流遵循反激式开关的输入电压的波形变化电源。

9. 发明申请

US20160029448A1 LED DRIVER AND LED DRIVING METHOD 有权
标题翻译： LED驱动器和LED驱动方法
公开(公告)号：US20160029448A1
公开(公告)日：2016-01-28
申请号：US14809430
申请日：2015-07-27
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Xiaodong Huang , Jin Jin
IPC分类号： H05B33/08
CPC分类号： H05B33/0812 , H02M1/08 , H02M2001/0003 , H05B33/0815
摘要： A method of driving an LED can include: (i) controlling a main power switch by a control circuit of an LED driver; (ii) turning on an auxiliary power switch when the main power switch is turned on such that a DC bus voltage is provided to the main power switch through the auxiliary power switch, and the main power switch outputs a driving current to a load; (iii) charging a capacitor by the DC bus voltage through the auxiliary power switch when the main power switch is turned off, where the capacitor is charged until a voltage across the capacitor reaches a predetermined stable voltage; (iv) clamping the voltage across the capacitor at the predetermined stable voltage; and (v) using the clamping voltage across the capacitor as a supply voltage for the control circuit.
摘要翻译：驱动LED的方法可以包括：（i）通过LED驱动器的控制电路控制主电源开关; （ii）主电源开关接通时接通辅助电源开关，通过辅助电源开关向主电源开关提供直流母线电压，主电源开关向负载输出驱动电流; （iii）当主电源开关关闭时，直流总线电压通过辅助电源开关对电容器充电，其中电容器被充电直到电容器两端的电压达到预定的稳定电压; （iv）以预定的稳定电压钳位电容器两端; 和（v）使用电容器两端的钳位电压作为控制电路的电源电压。

10. 发明申请

US20150382423A1 DIMMABLE LED DRIVER AND DRIVING METHOD 审中-公开
标题翻译：二极管驱动器和驱动方法
公开(公告)号：US20150382423A1
公开(公告)日：2015-12-31
申请号：US14843860
申请日：2015-09-02
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Feng Yu , Xiaodong Huang
IPC分类号： H05B33/08
CPC分类号： H05B33/0851 , H05B33/0815 , H05B33/0845 , Y02B20/347 , Y02B20/348
摘要： Disclosed are dimmable LED driver circuits and methods. A dimmable LED driver can include: an SCR, an electronic transformer, and a rectifier bridge to convert an AC voltage to a DC voltage signal; a power stage circuit that receives the DC voltage signal, and outputs a constant current to drive an LED load, where the power stage circuit includes first and second power stage circuits, the first power stage circuit receiving the DC voltage signal, and generating a first output voltage to the second power stage; and an input current control circuit that receives an input current of the first power stage circuit and the first output voltage, and generates a first control signal to control the input current as a square wave signal during an on time of the SCR, and the input current is substantially zero during an off time of the SCR.
摘要翻译：公开了可调光LED驱动电路和方法。可调光LED驱动器可以包括：SCR，电子变压器和将AC电压转换成DC电压信号的整流器桥; 功率级电路，其接收直流电压信号，并输出恒定电流来驱动LED负载，其中功率级电路包括第一和第二功率级电路，第一功率级电路接收直流电压信号，并产生第一输出电压到第二功率级; 以及输入电流控制电路，其接收第一功率级电路的输入电流和第一输出电压，并且在SCR的导通时间期间产生用于将输入电流控制为方波信号的第一控制信号，并且输入电流在SCR的关闭时间内基本为零。

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