公开(公告)号：US10014723B2

公开(公告)日：2018-07-03

申请号：US14258708

申请日：2014-04-22

Applicant: RICHTEK TECHNOLOGY CORP

Inventor： Wei-Jen Huang ,  Shui-Mu Lin

IPC: H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H02J50/12 ,  H02J5/00 ,  H02J7/02 ,  H02M7/217

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02M7/217

Abstract: A power management unit, adapted to a wireless power system, includes: a rectifier, converts an AC power received by an input port thereof to a direct-current (DC) voltage outputted by a rectifying output terminal thereof; a first switch, wherein a first protecting capacitor is coupled between one terminal of the input port and a channel thereof; a second switch, wherein a second protecting capacitor is coupled between the other terminal of the input port and a channel thereof; a reference voltage terminal, for providing a reference voltage; and, a comparator, including two input terminals coupled to the rectifying output terminal and the reference voltage terminal respectively, and including an output terminal coupled to both the control terminals of the first switch and the second switch.

公开(公告)号：US20150142348A1

公开(公告)日：2015-05-21

申请号：US14195557

申请日：2014-03-03

Applicant: RICHTEK TECHNOLOGY CORP

Inventor： Wei-Jen Huang ,  Shui-Mu Lin

IPC: G01R21/133 ,  G01V3/00

CPC classification number: G01R21/133 ,  G01V3/00 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/10 ,  H02J50/60

Abstract: A power calculating method, adapted to a wireless power system, includes the following steps: first, multi-sampling input or output current of a regulator in the power receiving end, and performing root-men-square calculation accordingly to derive a current RMS value; second, multi-sampling input or output voltage of the regulator, and performing a root-men-square calculation accordingly to derive a voltage RMS value; third, multiplying the voltage RMS value to the current RMS value and a cosine of an angle to derive a regulating power value; fourth, dividing the regulating power value by a power efficiency value to derive a receiving power value; finally, transmitting the receiving power value to a power transmitting end of the wireless power system for performing foreign object detection.

Abstract translation: 一种适用于无线电力系统的功率计算方法，包括以下步骤：首先，对受电端的稳压器的多采样输入或输出电流进行相应的平方根计算，得出电流RMS值 ; 第二，调节器的多采样输入或输出电压，并且相应地执行根平均计算以导出电压RMS值; 第三，将电压RMS值乘以电流RMS值和角度的余弦以导出调节功率值; 第四，将调节功率值除以功率效率值以得到接收功率值; 最后，将接收功率值发送到用于进行异物检测的无线电力系统的发送端。

公开(公告)号：US20140344601A1

公开(公告)日：2014-11-20

申请号：US13970331

申请日：2013-08-19

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Wei-Jen Huang ,  Tsung-Wei Huang ,  Shui-Mu Lin

IPC: G06F1/32

CPC classification number: H02J50/12 ,  G06F1/3293 ,  H02J5/005 ,  H02J50/80 ,  H02M3/1588 ,  H02M3/33592 ,  H02M5/4505 ,  H02M5/4585 ,  H02M2001/4275

Abstract: A wireless power receiver includes a power receiving circuit wirelessly receiving power transmitted from a wireless power transmitter so as to generate an induced current, and a rectifying-and-modulating circuit including first to eighth switches and a control unit. The control unit is operable to control operation of each of the first to eighth switches between conduction and non-conduction. Accordingly, the first to fourth switches cooperatively constitute a full-bridge rectifier for rectifying the induced current generated by the power receiving circuit, and each of the fifth to eighth switches is operable to switch synchronously with a respective one of the first to fourth switches or to became non-conducting, thereby changing an amplitude of the induced current.

Abstract translation: 无线电力接收机包括无线接收从无线电力发射机发送的功率以产生感应电流的电力接收电路，以及包括第一至第八开关和控制单元的整流和调制电路。 控制单元可操作以控制导通和非导通之间的第一至第八开关中的每一个的操作。 因此，第一至第四开关协同地构成用于整流由电力接收电路产生的感应电流的全桥整流器，并且第五至第八开关中的每一个可操作以与第一至第四开关中的相应一个开关同步地切换， 变成不导通，从而改变感应电流的幅度。

公开(公告)号：US20150137611A1

公开(公告)日：2015-05-21

申请号：US14258708

申请日：2014-04-22

Applicant: RICHTEK TECHNOLOGY CORP

Inventor： Wei-Jen Huang ,  Shui-Mu Lin

IPC: H02J5/00 ,  H02M7/04 ,  H02J7/02

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02M7/217

Abstract: A power management unit, adapted to a wireless power system, includes: a rectifier, converts an AC power received by an input port thereof to a direct-current (DC) voltage outputted by a rectifying output terminal thereof; a first switch, wherein a first protecting capacitor is coupled between one terminal of the input port and a channel thereof; a second switch, wherein a second protecting capacitor is coupled between the other terminal of the input port and a channel thereof; a reference voltage terminal, for providing a reference voltage; and, a comparator, including two input terminals coupled to the rectifying output terminal and the reference voltage terminal respectively, and including an output terminal coupled to both the control terminals of the first switch and the second switch.

Abstract translation: 一种适用于无线电力系统的电力管理单元，包括：整流器，将由其输入端口接收的交流电力转换成由其整流输出端子输出的直流（DC）电压; 第一开关，其中第一保护电容器耦合在所述输入端口的一个端子和其沟道之间; 第二开关，其中第二保护电容器耦合在所述输入端口的另一端和其通道之间; 参考电压端子，用于提供参考电压; 以及包括分别耦合到整流输出端子和参考电压端子的两个输入端子的比较器，并且包括耦合到第一开关和第二开关的两个控制端子的输出端子。

公开(公告)号：US20150137602A1

公开(公告)日：2015-05-21

申请号：US14139454

申请日：2013-12-23

Applicant: RICHTEK TECHNOLOGY CORP

Inventor： Wei-Jen Huang ,  Tsung-Wei Huang ,  Shui-Mu Lin

IPC: H02J4/00

CPC classification number: H02J7/025 ,  H02J4/00 ,  H02J5/00 ,  H02J5/005 ,  H02J7/02 ,  H02J9/061 ,  H02J50/10 ,  H02J50/40 ,  H02J2007/0062 ,  Y10T307/549

Abstract: A power management unit, adapted to a wireless power supplying unit, for switching between input powers and providing a rated voltage or a variable flow current is provided. The power management unit includes a rectifying unit, a regulating unit, and a control unit. The rectifying unit converts AC power into DC power. The regulating unit is connected to the rectifying unit and generates a stable rated voltage or a variable flow current. The control unit is connected to the regulating unit and controls the input power driving the regulating unit. In addition, an apparatus and a method for a wireless power supplying unit are provided.

Abstract translation: 提供了一种适用于无线供电单元的功率管理单元，用于在输入功率之间切换并提供额定电压或可变流量。 电源管理单元包括整流单元，调节单元和控制单元。 整流单元将交流电转换成直流电源。 调节单元连接到整流单元，产生稳定的额定电压或可变流量。 控制单元连接到调节单元并控制驱动调节单元的输入电力。 另外，提供了一种用于无线供电单元的装置和方法。

公开(公告)号：US09225196B2

公开(公告)日：2015-12-29

申请号：US13970331

申请日：2013-08-19

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Wei-Jen Huang ,  Tsung-Wei Huang ,  Shui-Mu Lin

IPC: H03C1/54 ,  H02J7/02 ,  G06F1/32 ,  H02M1/42 ,  H02M5/45 ,  H02M3/335 ,  H02M3/158 ,  H02M5/458

CPC classification number: H02J50/12 ,  G06F1/3293 ,  H02J5/005 ,  H02J50/80 ,  H02M3/1588 ,  H02M3/33592 ,  H02M5/4505 ,  H02M5/4585 ,  H02M2001/4275

Abstract: A wireless power receiver includes a power receiving circuit wirelessly receiving power transmitted from a wireless power transmitter so as to generate an induced current, and a rectifying-and-modulating circuit including first to eighth switches and a control unit. The control unit is operable to control operation of each of the first to eighth switches between conduction and non-conduction. Accordingly, the first to fourth switches cooperatively constitute a full-bridge rectifier for rectifying the induced current generated by the power receiving circuit, and each of the fifth to eighth switches is operable to switch synchronously with a respective one of the first to fourth switches or to became non-conducting, thereby changing an amplitude of the induced current.

Abstract translation: 无线电力接收机包括无线接收从无线电力发射机发送的功率以产生感应电流的电力接收电路，以及包括第一至第八开关和控制单元的整流和调制电路。 控制单元可操作以控制导通和非导通之间的第一至第八开关中的每一个的操作。 因此，第一至第四开关协同地构成用于整流由电力接收电路产生的感应电流的全桥整流器，并且第五至第八开关中的每一个可操作以与第一至第四开关中的相应一个开关同步地切换， 变成不导通，从而改变感应电流的幅度。