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1. 发明授权

US10797580B1 Detection circuit, switching regulator having the same and control method 有权
公开(公告)号：US10797580B1
公开(公告)日：2020-10-06
申请号：US16453137
申请日：2019-06-26
申请人： Alpha and Omega Semiconductor (Cayman), Ltd
发明人： Bu-Wei Chen , Yueh-Ping Yu , Jung-Pei Cheng
IPC分类号： H02M1/08 , H02M3/158 , H02M1/00
摘要： A detection circuit for detecting an inductor current flowing through an inductor is provided. The inductor is coupled to a switch. The detection circuit includes a comparison circuit and a signal generating circuit. The comparison circuit, having a first node, is configured to compare a conduction time of a diode of the switch with a time threshold to provide a first voltage at the first node. The signal generating circuit, coupled to the first node, is configured to output a first detection signal according to the first voltage. The first detection signal indicates whether the inductor current flowing through the inductor reaches a first current threshold. A switching regulator comprises the detection circuit. A control method controls the switching regulator.

2. 发明申请

US20160079878A1 CONSTANT ON TIME (COT) CONTROL IN ISOLATED CONVERTER 有权
标题翻译：恒定时间（COT）控制在隔离转换器
公开(公告)号：US20160079878A1
公开(公告)日：2016-03-17
申请号：US14562735
申请日：2014-12-07
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Tien-Chi Lin , Chih-Yuan Liu , Yueh-Ping Yu , Pei-Lun Huang
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M3/33507 , Y02B70/1475
摘要： The present invention discloses a constant on-time isolated converter comprising a transformer with a primary side and a secondary side. The primary side is connected to an electronic switch and secondary-side is connected to a load and a processor. The processor is connected to a driver on primary side through at least one coupling element and to the electronic switch. The processor receives an output voltage or an output current across the load generating a control signal accordingly. The driver receives the control signal through the coupling element and accordingly changes the ON/OFF state of the electronic switch, regulating the output voltage and the output current via the transformer, where the duration of the ON/OFF state of the electronic switch is determined between the moment control signal changes from negative to positive and the moment it changes from positive to negative to achieve a high-speed load transient response.
摘要翻译：本发明公开了一种具有初级侧和次级侧的变压器的恒定导通时间隔离变换器。初级侧连接到电子开关，次级侧连接到负载和处理器。处理器通过至少一个耦合元件和电子开关连接到初级侧的驱动器。处理器接收负载的输出电压或输出电流，从而产生相应的控制信号。驱动器通过耦合元件接收控制信号，从而改变电子开关的ON / OFF状态，通过变压器调节输出电压和输出电流，确定电子开关的ON / OFF状态瞬间控制信号从负变为正，瞬间从正变为负，达到高速负载瞬态响应。

3. 发明授权

US11258270B2 Super-fast transient response (STR) AC/DC converter for high power density charging application 有权
公开(公告)号：US11258270B2
公开(公告)日：2022-02-22
申请号：US16457782
申请日：2019-06-28
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Pei-Lun Huang , Yu-Ming Chen , Tien-Chi Lin , Jung-Pei Cheng , Yueh-Ping Yu , Zhi-Qiang Niu , Xiaotian Zhang , Long-Ching Wang
IPC分类号： H05K1/14 , H02J7/00 , H01L23/495 , H05K1/11 , H05K1/18 , H05K1/16
摘要： A charger comprises a housing, a first multi-layer printed circuit board (PCB), a second multi-layer PCB, and a third multi-layer PCB. The first PCB comprises at least a portion of a primary side circuit. The second PCB comprises at least a portion of a secondary side circuit. The third PCB is perpendicular to the first PCB and the second PCB. An isolation coupling element is disposed on the third PCB. The isolation coupling element comprises a multi-layer PCB. The first PCB comprises a high voltage (HV) semiconductor package. A surface of a die paddle of the HV semiconductor package is exposed from a molding encapsulation of the HV semiconductor package.

4. 发明授权

US09960664B2 Voltage converter 有权
公开(公告)号：US09960664B2
公开(公告)日：2018-05-01
申请号：US15240787
申请日：2016-08-18
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Tien-Chi Lin , Yu-Ming Chen , Jung-Pei Cheng , Yung-Chuan Hsu , Yueh-Ping Yu , Wei-Ting Wang , Pei-Lun Huang
IPC分类号： H02M3/335 , H02M1/08 , H02M1/40 , H02M1/00 , H02M1/36
CPC分类号： H02M1/08 , H02M1/36 , H02M1/40 , H02M3/33523 , H02M3/33592 , H02M2001/0006 , H02M2001/0009 , Y02B70/1475
摘要： A voltage converter comprises a second controller as a power switch of the secondary side of the transformer for comparing a detection voltage representing an output voltage and/or load current with a first reference voltage and generating a control signal, and a coupling element for transmitting the control signal generated by the second controller to the first controller on the primary side of the transformer enabling the first controller to generate a first pulse signal driving the power switch to control the on/off state of the primary side winding.

5. 发明授权

US09882500B2 Power supply device 有权
公开(公告)号：US09882500B2
公开(公告)日：2018-01-30
申请号：US15240921
申请日：2016-08-18
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Tien-Chi Lin , Yu-Ming Chen , Jung-Pei Cheng , Yung-Chuan Hsu , Yueh-Ping Yu , Wei-Ting Wang , Pei-Lun Huang
IPC分类号： H02M3/335 , H02M1/08 , H02M1/40 , H02M1/36 , H02M1/00
CPC分类号： H02M3/33592 , H02M1/08 , H02M1/36 , H02M1/40 , H02M3/33523 , H02M2001/0006 , Y02B70/1475
摘要： The present invention relates to a power supply device for voltage converter, which includes a master switch, a first controller for generating a first pulse signal to drive the master switch to be turned on and turned off, a second controller for comparing a detection voltage representing an output voltage and/or load current with a first reference voltage to determine the logic state of a control signal generated by the second controller, and a coupling element connected between the first controller and the second controller for transmitting the logic state of the control signal to the first controller and enabling the first controller to determine the logic state of the first pulse signal according to the logic state of the control signal. The second controller includes a driving module for generating a second control signal to drive a synchronous switch to be turned on and turned off.

6. 发明申请

US20160359421A1 POWER SUPPLY DEVICE 有权
标题翻译：电源设备
公开(公告)号：US20160359421A1
公开(公告)日：2016-12-08
申请号：US15240921
申请日：2016-08-18
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Tien-Chi Lin , Yu-Ming Chen , Jung-Pei Cheng , Yung-Chuan Hsu , Yueh-Ping Yu , Wei-Ting Wang , Pei-Lun Huang
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M1/08 , H02M1/36 , H02M1/40 , H02M3/33523 , H02M2001/0006 , Y02B70/1475
摘要： The present invention relates to a power supply device for voltage converter, which includes a master switch, a first controller for generating a first pulse signal to drive the master switch to be turned on and turned off, a second controller for comparing a detection voltage representing an output voltage and/or load current with a first reference voltage to determine the logic state of a control signal generated by the second controller, and a coupling element connected between the first controller and the second controller for transmitting the logic state of the control signal to the first controller and enabling the first controller to determine the logic state of the first pulse signal according to the logic state of the control signal. The second controller includes a driving module for generating a second control signal to drive a synchronous switch to be turned on and turned off.
摘要翻译：本发明涉及一种用于电压转换器的电源装置，其包括主开关，用于产生第一脉冲信号以驱动主开关导通和截止的第一控制器，用于将代表具有第一参考电压的输出电压和/或负载电流，以确定由第二控制器产生的控制信号的逻辑状态，以及连接在第一控制器和第二控制器之间的耦合元件，用于发送控制信号的逻辑状态并且使第一控制器能够根据控制信号的逻辑状态确定第一脉冲信号的逻辑状态。第二控制器包括用于产生第二控制信号以驱动同步开关导通和关断的驱动模块。

7. 发明申请

US20160359419A1 VOLTAGE CONVERTER 有权
标题翻译：电压转换器
公开(公告)号：US20160359419A1
公开(公告)日：2016-12-08
申请号：US15240787
申请日：2016-08-18
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Tien-Chi Lin , Yu-Ming Chen , Jung-Pei Cheng , Yung-Chuan Hsu , Yueh-Ping Yu , Wei-Ting Wang , Pei-Lun Huang
IPC分类号： H02M3/335 , H02M1/088 , H02M1/14
CPC分类号： H02M1/08 , H02M1/36 , H02M1/40 , H02M3/33523 , H02M3/33592 , H02M2001/0006 , H02M2001/0009 , Y02B70/1475
摘要： A voltage converter comprises a second controller as a power switch of the secondary side of the transformer for comparing a detection voltage representing an output voltage and/or load current with a first reference voltage and generating a control signal, and a coupling element for transmitting the control signal generated by the second controller to the first controller on the primary side of the transformer enabling the first controller to generate a first pulse signal driving the power switch to control the on/off state of the primary side winding.
摘要翻译：电压转换器包括作为变压器的次级侧的电源开关的第二控制器，用于将表示输出电压和/或负载电流的检测电压与第一参考电压进行比较并产生控制信号;以及耦合元件，用于发送由第二控制器产生的控制信号到变压器初级侧的第一控制器，使得第一控制器能够产生驱动电源开关的第一脉冲信号以控制初级侧绕组的接通/断开状态。

8. 发明授权

US10818568B1 Super-fast transient response (STR) AC/DC converter for high power density charging application 有权
公开(公告)号：US10818568B1
公开(公告)日：2020-10-27
申请号：US16457852
申请日：2019-06-28
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Pei-Lun Huang , Yu-Ming Chen , Tien-Chi Lin , Jung-Pei Cheng , Yueh-Ping Yu , Zhi-Qiang Niu , Xiaotian Zhang , Long-Ching Wang
IPC分类号： H05K7/00 , H01L23/31 , H01L29/49 , H01F27/28 , H05K1/02 , H05K1/18 , H02M7/12 , H01L23/495 , H02J7/00
摘要： A charger comprises a housing, a first multi-layer printed circuit board (PCB), a second multi-layer PCB, and a third multi-layer PCB. The first PCB comprises at least a portion of a primary side circuit. The second PCB comprises at least a portion of a secondary side circuit. The third PCB is perpendicular to the first PCB and the second PCB. An isolation coupling element is disposed on the third PCB. The isolation coupling element comprises a multi-layer PCB. The first PCB comprises a high voltage (HV) semiconductor package. A surface of a die paddle of the HV semiconductor package is exposed from a molding encapsulation of the HV semiconductor package.

9. 发明授权

US09954455B2 Constant on time COT control in isolated converter 有权
公开(公告)号：US09954455B2
公开(公告)日：2018-04-24
申请号：US14562729
申请日：2014-12-07
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Tien-Chi Lin , Chih-Yuan Liu , Yueh-Ping Yu , Jung-Pei Cheng , Pei-Lun Huang
IPC分类号： H02M3/335 , H02M1/08 , H02M1/40 , H02M1/36
CPC分类号： H02M3/33592 , H02M1/08 , H02M1/36 , H02M1/40 , H02M3/33523 , Y02B70/1475
摘要： The present invention discloses a constant on-time isolated converter comprising a transformer with a primary side and a secondary side. The primary side is connected to an electronic switch and secondary-side is connected to a load and a processor. The processor is connected to a driver on primary side through at least one coupling element and to the electronic switch. The processor receives an output voltage or an output current across the load generating a control signal accordingly. The driver receives the control signal through the coupling element and accordingly changes the ON/OFF state of the electronic switch, regulating the output voltage and the output current via the transformer, where the duration of the ON/OFF state of the electronic switch is determined between the moment control signal changes from negative to positive and the moment it changes from positive to negative to achieve a high-speed load transient response.

10. 发明授权

US09577543B2 Constant on time (COT) control in isolated converter 有权
标题翻译：独立转换器中的恒定时间（COT）控制
公开(公告)号：US09577543B2
公开(公告)日：2017-02-21
申请号：US14562735
申请日：2014-12-07
申请人： Alpha and Omega Semiconductor (Cayman) Ltd.
发明人： Tien-Chi Lin , Chih-Yuan Liu , Yueh-Ping Yu , Pei-Lun Huang
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M3/33507 , Y02B70/1475
摘要： The present invention discloses a constant on-time isolated converter comprising a transformer with a primary side and a secondary side. The primary side is connected to an electronic switch and secondary-side is connected to a load and a processor. The processor is connected to a driver on primary side through at least one coupling element and to the electronic switch. The processor receives an output voltage or an output current across the load generating a control signal accordingly. The driver receives the control signal through the coupling element and accordingly changes the ON/OFF state of the electronic switch, regulating the output voltage and the output current via the transformer, where the duration of the ON/OFF state of the electronic switch is determined between the moment control signal changes from negative to positive and the moment it changes from positive to negative to achieve a high-speed load transient response.
摘要翻译：本发明公开了一种具有初级侧和次级侧的变压器的恒定导通时间隔离变换器。初级侧连接到电子开关，次级侧连接到负载和处理器。处理器通过至少一个耦合元件和电子开关连接到初级侧的驱动器。处理器接收负载的输出电压或输出电流，从而产生相应的控制信号。驱动器通过耦合元件接收控制信号，从而改变电子开关的ON / OFF状态，通过变压器调节输出电压和输出电流，确定电子开关的ON / OFF状态瞬间控制信号从负变为正，瞬间从正变为负，达到高速负载瞬态响应。

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