专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明申请

US20130342243A1 POWER SWITCH DRIVING CIRCUITS AND POWER CONVERTERS THEREOF 有权
标题翻译：电源开关驱动电路及其电源转换器
公开(公告)号：US20130342243A1
公开(公告)日：2013-12-26
申请号：US13886491
申请日：2013-05-03
申请人： SILERGY SEMICONDUCTOR TECHNOLOGY (HANGZHOU) LTD
发明人： Wei Chen , Xiaoru Xu
IPC分类号： H03K3/353
CPC分类号： H03K17/165 , H02M3/33569 , H02M3/3376 , H03K3/353 , H03K17/162 , H03K17/6872 , H03K2217/0063 , H03K2217/0072
摘要： In one embodiment, a power switch driving circuit can include: (i) an upper switch having a first power terminal coupled to a voltage source, and a second power terminal coupled to a driving signal; (ii) a lower switch having a first power terminal coupled to the driving signal, and a second power terminal coupled to a first voltage level, where the first voltage level is higher than a first ground potential; (iii) an upper switch driving sub circuit configured to receive a control signal, and to drive the upper switch in response thereto; and (iii) a lower switch driving sub circuit configured to receive the control signal, and to drive the lower switch in response thereto, where the upper and lower switch driving sub circuits are coupled to a second ground potential.
摘要翻译：在一个实施例中，电源开关驱动电路可以包括：（i）具有耦合到电压源的第一电源端和耦合到驱动信号的第二电源端的上开关; （ii）具有耦合到所述驱动信号的第一电源端子的下开关和耦合到第一电压电平的第二电源端子，其中所述第一电压电平高于第一接地电位; （iii）上部开关驱动子电路，被配置为接收控制信号，并响应于此驱动上部开关; 和（iii）配置成接收控制信号的下开关驱动子电路，并响应于此驱动下开关，其中上开关驱动子电路和下开关驱动子电路耦合到第二接地电位。

62. 发明申请

US20130329463A1 HIGH EFFICIENCY AND FAST RESPONSE AC-DC VOLTAGE CONVERTERS 有权
标题翻译：高效率和快速响应AC-DC电压转换器
公开(公告)号：US20130329463A1
公开(公告)日：2013-12-12
申请号：US13855909
申请日：2013-04-03
申请人： SILERGY SEMICONDUCTOR TECHNOLOGY (HANGZHOU) LTD
发明人： Wei Chen
IPC分类号： H02M3/335
CPC分类号： H02M1/42 , H02M1/4258 , H02M3/33507 , H02M3/33561 , H02M7/10 , H02M2001/007 , Y02B70/126
摘要： The present invention discloses circuits and methods for high efficiency and fast response AC-DC voltage converters. In one embodiment, an AC-DC voltage converter can include: (i) a first stage voltage converter having an isolated topology with a power factor correction function, where the first stage voltage converter is configured to convert an AC input voltage to a series-connected N branches of first stage voltages, where N is a positive integer of at least two; (ii) a second stage voltage converter having a non-isolated topology, where the second stage voltage converter is configured to convert one of the N branches of the first stage voltages to a second stage voltage; and (iii) where the second stage voltage and a remaining of the N branches of the first stage voltages are configured to be series-connected and converted to a DC output voltage.
摘要翻译：本发明公开了用于高效率和快速响应的AC-DC电压转换器的电路和方法。在一个实施例中，AC-DC电压转换器可以包括：（i）具有功率因数校正功能的隔离拓扑的第一级电压转换器，其中第一级电压转换器被配置为将AC输入电压转换成串联电压，连接的第一级电压的N个分支，其中N是至少两个的正整数; （ii）具有非隔离拓扑结构的第二级电压转换器，其中所述第二级电压转换器被配置为将所述第一级电压的N个分支中的一个转换为第二级电压; 和（iii）其中第二级电压和第一级电压的N个分支的剩余部分被配置为串联连接并转换成DC输出电压。

63. 发明申请

US20130313989A1 HIGH EFFICIENCY LED DRIVERS WITH HIGH POWER FACTOR 有权
公开(公告)号：US20130313989A1
公开(公告)日：2013-11-28
申请号：US13855883
申请日：2013-04-03
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Wei Chen
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0842 , H05B33/0848 , H05B33/0887 , H05B37/02
摘要： The present invention relates to a high efficiency, high power factor LED driver for driving an LED device. In one embodiment, an LED driver can include: an LED current detection circuit coupled to the LED device, and configured to generate a feedback signal that represents an error between a driving current and an expected driving current of the LED device; a power stage circuit, where a first power switch terminal is coupled to a first input voltage, and a second power switch terminal is coupled to ground; and a control circuit configured to generate a control signal according to the feedback signal and a drain-source voltage of the power switch, where the control signal, in each switch period, turns on the power switch when the drain-source voltage reaches a low level, and turns off the power switch after a fixed time interval based on the feedback signal.

64. 发明申请

US20130181626A1 HIGH EFFICIENCY LED DRIVER AND DRIVING METHOD THEREOF 有权
标题翻译：高效LED驱动器及其驱动方法
公开(公告)号：US20130181626A1
公开(公告)日：2013-07-18
申请号：US13737207
申请日：2013-01-09
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Wei Chen
IPC分类号： H05B33/08
CPC分类号： H05B33/0842 , H05B33/0809 , H05B33/0812
摘要： The present invention relates to a high efficiency LED driver, and driving methods thereof. In one embodiment, a high efficiency LED driving method can include: (i) receiving an AC input voltage to obtain an absolute value thereof; (ii) receiving a DC bus voltage, and driving the LED device through a power switch; (iii) generating a first reference voltage according to a driving current and an expected driving current; (iv) comparing the absolute value against a sum of a driving voltage and the first reference voltage; (v) when the absolute value is greater than the sum of the driving voltage and the first reference voltage, turning off the power switch; and (vi) when the absolute value is greater than the driving voltage but less than the sum of the driving voltage and the first reference voltage, turning on the power switch to generate an output current.
摘要翻译：本发明涉及一种高效率LED驱动器及其驱动方法。在一个实施例中，高效LED驱动方法可以包括：（i）接收AC输入电压以获得其绝对值; （ii）接收直流母线电压，并通过电源开关驱动LED器件; （iii）根据驱动电流和期望的驱动电流产生第一参考电压; （iv）将绝对值与驱动电压和第一参考电压的和进行比较; （v）当绝对值大于驱动电压和第一参考电压之和时，关闭电源开关; 和（vi）当绝对值大于驱动电压但小于驱动电压和第一参考电压之和时，接通电源开关以产生输出电流。

65. 发明申请

US20130175936A1 HIGH EFFICIENCY LED DRIVER AND DRIVING METHOD THEREOF 有权
标题翻译：高效LED驱动器及其驱动方法
公开(公告)号：US20130175936A1
公开(公告)日：2013-07-11
申请号：US13723666
申请日：2012-12-21
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Wei Chen
IPC分类号： H05B37/02
CPC分类号： H05B33/0809 , H05B33/0812 , H05B37/02
摘要： The present invention relates to a high efficiency LED driver and driving method thereof. In one embodiment, a high efficiency LED driving method configured for a LED device can include: (i) receiving a DC bus voltage and generating a driving voltage for the LED device through a power switch; (ii) comparing the DC bus voltage against a sum of the driving voltage and a first reference voltage; (iii) where when the DC bus voltage is greater than the sum of the driving voltage and the first reference voltage, generating a first output current; (iv) where when the DC bus voltage is greater than the driving voltage and less than the sum of the driving voltage and the first reference voltage, generating a second output current; and (v) matching an average current of the first output current and the second output current with a corresponding driving current.
摘要翻译：本发明涉及一种高效率LED驱动器及其驱动方法。在一个实施例中，配置用于LED器件的高效LED驱动方法可以包括：（i）通过电源开关接收DC总线电压并产生用于LED器件的驱动电压; （ii）将所述DC总线电压与所述驱动电压和第一参考电压的和进行比较; （iii）当直流母线电压大于驱动电压和第一参考电压之和时，产生第一输出电流; （iv）当直流母线电压大于驱动电压并小于驱动电压和第一参考电压之和时，产生第二输出电流; 和（v）将第一输出电流和第二输出电流的平均电流与相应的驱动电流进行匹配。

66. 发明授权

US11728725B2 Alternating current to direct current conversion circuit 有权
公开(公告)号：US11728725B2
公开(公告)日：2023-08-15
申请号：US17552931
申请日：2021-12-16
申请人： SILERGY SEMICONDUCTOR TECHNOLOGY (HANGZHOU) LTD
发明人： Wei Chen , Chen Zhao
IPC分类号： H02M7/217 , H02M7/49 , H02M1/42 , H02M1/14 , H02M3/07 , H02M7/04
CPC分类号： H02M1/4208 , H02M1/143 , H02M3/07 , H02M7/04 , H02M7/2176 , H02M7/49
摘要： An alternating current to direct current conversion circuit includes a rectifier circuit, a first DC to DC conversion module and a second DC to DC conversion module. The first DC to DC conversion module includes multiple power switches and an inductor and is coupled between the rectifier circuit and the second DC to DC conversion module. Multiple power switches in the first DC to DC conversion module are controlled to be turned on simultaneously, so that a voltage across each of the power switches in the first DC to DC conversion module is reduced. The alternating current to direct current conversion circuit includes no power switch with a high withstand voltage, so that the alternating current to direct current conversion circuit has a small volume, low switching loss, less energy loss, and good heat dissipation, thereby increasing power density.

67. 发明授权

US11722070B2 Alternating current to direct current conversion circuit 有权
公开(公告)号：US11722070B2
公开(公告)日：2023-08-08
申请号：US17552905
申请日：2021-12-16
申请人： SILERGY SEMICONDUCTOR TECHNOLOGY (HANGZHOU) LTD
发明人： Wei Chen , Chen Zhao
IPC分类号： H02M7/49 , H02M7/217 , H02M7/12 , H02M1/00 , H02M1/14 , H02M1/42 , H02M3/07
CPC分类号： H02M7/12 , H02M1/007 , H02M1/143 , H02M1/4233 , H02M3/07 , H02M7/2176 , H02M7/49
摘要： An alternating current to direct current conversion circuit includes N first power converters instead of a boost circuit including a power switch with a high withstand voltage. The N first power converters each have an input end and theses input ends are connected in series, to perform power factor correction. Therefore, the alternating current to direct current conversion circuit includes no power switch with a high withstand voltage, so that the alternating current to direct current conversion circuit has a small volume, low switching loss, less energy loss, and good heat dissipation, thereby increasing power density.

68. 发明授权

US11316372B2 Driving circuit and wireless power transmitter including the same 有权
公开(公告)号：US11316372B2
公开(公告)日：2022-04-26
申请号：US16505793
申请日：2019-07-09
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Wang Zhang , Wei Chen , Chen Zhao
IPC分类号： H02J50/12 , H02J7/02
摘要： The present disclosure relates to a driving circuit and a wireless power transmitter including the same. In view of the fact that a transmitter-side coupling circuit exhibits a high resistance when an AC current having a frequency far away from its operating frequency is applied to input terminals, the present disclosure connects a plurality of transmitter-side coupling circuits which operates at different operating frequencies in parallel at output terminals of the same inverting circuit. The controller controls an operating frequency of the AC current output from the inverting circuit to drive different one of the transmitter-side coupling circuits to operate. Thus, one driving circuit can drive the transmitter-side coupling circuits which operate at different operating frequencies or under different technical standards to supply electric energy. The driving circuit is compatible with wireless power receivers which operate at different operating frequencies, and thus has improved compatibility.

69. 发明授权

US10928047B2 Package structure and LED illumination module 有权
公开(公告)号：US10928047B2
公开(公告)日：2021-02-23
申请号：US16366241
申请日：2019-03-27
申请人： SILERGY SEMICONDUCTOR TECHNOLOGY (HANGZHOU) LTD
发明人： Wei Chen , Jian Wei
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.

70. 发明授权

US09717133B2 Wireless LED driver 有权
公开(公告)号：US09717133B2
公开(公告)日：2017-07-25
申请号：US15341235
申请日：2016-11-02
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Wang Zhang , Wei Chen , Chen Zhao
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B37/0272 , H05B33/0812 , H05B33/0815 , H05B33/0845
摘要： A wireless LED driver can include: an electrical energy transmitter comprising an inverter circuit coupled to receive an input power supply, and being configured to convert a received voltage signal to an AC signal; the electrical energy transmitter comprising N transmitter coupling circuits coupled to the inverter circuit, and being configured to be driven by the AC signal; an electrical energy receiver comprising M receiver coupling circuits coupled to the transmitter coupling circuits in a contactless mode, and being configured to receive the AC signal; and the electrical energy receiver comprising M rectifier circuits coupled to the receiver coupling circuits one by one, where each the rectifier circuit is configured to convert the AC signal to a DC signal to drive an LED load coupled to output terminals of the rectifier circuit, and where N and M are integers not less than 1.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式