Intel Corporation

Halo Microelectronics Co., Ltd.

Halo Microelectronics International

Huawei Digital Power Technologies Co., Ltd.

Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

The University of Tennessee Research Foundation

Other

Princeton University

Songnan Yang

Ulun Karacaoglu

Anand S Konanur

Zhen Yao

Xintian Eddie Lin

Hao-Han Hsu

Suraj Sindia

Rui Liu

Jie Gao

Hong W Wong

Farid Adrangi

Emily B Cooper

Jiancheng Tao

Shahar Porat

Xiaoguo Liang

Chung-Hao Chen

Shawn McEuen

Wah Yiu Kwong

Seong-Youp Suh

Xiaolin Mao

Robert F Kwasnick

Xue Yang

David Gomez Gutierrez

Rafael De La Guardia Gonzalez

Dong-Ho Han

Helen Kankan Pan

Qinghua Li

Bernhard Raaf

Oleg Pogorelik

Atsuo Kuwahara

Wei Wei

Kristoffer Fleming

David W Browning

Vijay K Nair

Sergey Sofer

Essam Elkhouly

Bin Xiao

Jonathan Rosenfeld

Shuang Han

Sreenivas Kasturi

Manish A Hiranandani

Kwan Ho Lee

John M Roman

Steven G Gaskill

Robert Paxman

Yee Wei Eric Hong

Thomas H Liu

Janardhan Koratikere Narayan

Yueguo Hao

Yujuan Zhao

Lei Shao

Stephanie Moyerman

Muhammad Abozaed

Baoshan Wu

Bing Cai

Walid El Hajj

Gary N Matos

Xiaoqing Hu

Patrick Chewning

Adam D Rea

Ze An Xia

Ronald W Gallahan

Debabani Choudhury

Mark E Sprenger

Ahmad Khoshnevis

Yan Chen

James Utz

Saku Lahti

David Pidwerbecki

Jaejin Lee

Mikko S Komulainen

Yaniv Frishman

Bradley Alan Jackson

Itzik Shahar

Avi Priev

Yongfang Guo

James J Walsh

Narjala Prakash Bhasker

Siva Ramakrishnan

Daniel Jes Costinett

Rohit Mittal

Yuval Elad

Subramanian Anandaraj

Jim Walsh

Kevin Joseph Doran

Shaorong Zhou

Fan Zhang

Suming Lai

Boyan Yanakiev

Kerry A Stevens

Niranjan Karandikar

Cheong W Wong

Minjie Chen

Gennady Goltman

Chongwen Zhao

Paul Beaucourt

Kenneth Chung-Yin Kwok

Kien Chan Vi

Matias Javier Almada

David Zhou

A switch control method is applied to a hybrid voltage converter including a switched capacitor unit and a freewheeling unit. The method including obtaining the output current of the hybrid voltage converter, when the output current is greater than a first current threshold, controlling the switches in the hybrid voltage converter to operate in parallel conduction mode, when the output current is less than the first current threshold, controlling the switches in the hybrid voltage converter to operate in sequential conduction mode. When the switches operate in parallel conduction mode, N switches in the switched capacitor unit are controlled to turn on and off with the same duty cycle and a phase shift of 360/N degrees. When the switches operate in sequential conduction mode, each switch in the switched capacitor unit is controlled to conduct individually with the same duty cycle in sequence.

Switch control method and hybrid voltage converter

A method includes connecting an output of a switched capacitor converter to a battery, the switched capacitor converter comprising a first switch, a second switch, a third switch and an upper circuit connected in series, and a flying capacitor connected between a common node of the first switch and the second switch, and a common node of the third switch and the upper circuit, in a first short circuit testing step, determining whether the third switch is shorted by comparing a voltage on the common node of the third switch and the upper circuit with a first predetermined voltage reference, and in a second short circuit testing step, determining whether the first switch and the second switch are shorted by comparing a voltage on the common node of the first switch and the second switch with a second predetermined voltage reference and a third predetermined voltage reference, respectively.

Short circuit detection apparatus and control method for switched capacitor converter

This disclosure describes systems, methods, and devices related to enhanced power management. A device may identify one or more first radio frequency waves received from a second device during a time period. The device may determine a first transmission power associated with a first radio frequency wave of the one or more first radio frequency waves. The device may determine a time-averaged power density associated with the one or more first radio frequency waves. The device may determine a transmission power limit. The device may send an indication of the transmission power limit to the second device.

Enhanced power management for wireless communications

A converter includes L phase legs, each phase leg of the L phase legs comprising a plurality of switches connected in series between an input power source and ground, wherein a first flying capacitor of an Mth phase is cross-coupled between an Mth phase leg and an (M+1)th phase leg, and a first flying capacitor of an Lth phase is cross-coupled between an Lth phase leg and a first phase leg, and wherein switches of the L phase legs are configured such that a ratio of an input voltage of the hybrid multi-phase step-down power converter to an output voltage of the hybrid multi-phase step-down power converter is equal to N/D, and wherein L, M, N are positive integers with M<L, L>2, and D is a duty cycle of the hybrid multi-phase step-down power converter.

Hybrid power conversion system and control method

Apparatus, system and method to provide switchable coils in a computing device, comprising: a plurality of electrically conductive coils to transfer electromagnetic energy; a sensor coupled to a processor, to select a coil from among the plurality of electrically conductive coils; a switch to energize the selected coil; and a switch controller coupled to the switch and to the processor. In some embodiments, the plurality of coils may comprise an inductive charging interface. Some embodiments may further include a communication interface between the processor to the plurality of electrically conductive coils, the plurality of coils comprising an interface for near-field communications (NFC). The antenna coils may be arranged to provide improved NFC coverage when the computing device is in a respective predetermined physical configuration. Sensors may be used to detect the configuration and switch NFC communications to use a preferred antenna coil for the detected configuration.

Coil for mobile device context-driven switching and wireless charging

A power conversion system includes one or more switched capacitor input cells connected between an input dc source and a plurality of interleaved multilevel voltage rails, one or more inductor links connected to the plurality of interleaved multilevel voltage rails, and one or more output cells, wherein each output cell is connected to an output load and all of the plurality of interleaved multilevel voltage rails through a corresponding inductor link.

Power conversion system and control method

A system includes at least two transmit coils. The system further comprises at least two transmit circuit units, a detection circuit, a communication module and a controller. The detection circuit is electrically connected to each of the transmit circuit units. The detection circuit and the communication module are both configured to acquire the coupling relationship between each of the transmit coils and a receive coil. The controller is electrically connected to the detection circuit, each of the transmit circuit units, and the communication module. The controller is configured to control, based on the acquired coupling relationship, the current output by each of the transmit circuit unit. The controller controls each of the transmit circuit units to supply a suitable current amplitude and a current phase to each of the transmit coils to achieve control of superimposed magnetic fields generated by currents on the transmit coils.

Wireless charging transmitter system and method for controlling same

A switched capacitor converter package includes a semiconductor package on a first side of an electrical routing apparatus, a first capacitor and a second capacitor on a second side of the electrical routing apparatus, wherein the first capacitor and the second capacitor are adjacent to each other and connected in parallel, and a third capacitor and a fourth capacitor connected on the second side of the electrical routing apparatus, wherein the third capacitor and the fourth capacitor are adjacent to each other and connected in parallel.

Switched capacitor converter package structure and method

A method includes charging a battery through a first charger and a second charger connected in parallel, during a first transition from a constant current charging phase to a constant voltage charging phase, enabling the second charger at a first time instant and disabling the first charger at a second time instant, the second time instant being after the first time instant, and during the constant voltage charging phase, enabling the first charger at a third time instant upon detecting that a current flowing the battery is less than a predetermined current threshold and disabling the second charger at a fourth time instant, the fourth time instant being after the third time instant, wherein the first charger and the second charger are configured to charge the battery simultaneously between the first time instant and the second time instant, and between the third time instant and the fourth time instant.

Wireless power transfer system and method

A switched capacitor converter includes a first leg between ground and a first voltage node, a second leg between ground and a second voltage node, a first flying capacitor connected between a first switch common node and a third switch common node of the first leg, a second flying capacitor connected between a first switch common node and a third switch common node of the second leg, a third flying capacitor connected between the first voltage node and the second voltage node, a first upper switch connected between the first voltage node and ground, and a second upper switch connected between the second voltage node and an input terminal.

Switched capacitor converter and control method

A wireless charging transmitter includes at least two transmit coils and at least two transmit circuit units; wherein the at least two transmit coils are configured to simultaneously transmit electric energy to an external receive coil, the at least two transmit coils are coupled such that orientations of magnetic fields generated by currents on the at least two transmit coils are not parallel and form a first angle, a coupling coefficient between the at least two transmit coils is less than a predetermined threshold and each of the transmit circuit units is electrically connected to each of the transmit coils and configured to supply a current to the transmit coil. Therefore, the current on each of the transmit coils in the wireless charging transmitter generates a corresponding magnetic field.

Wireless charging transmitter and wireless charger

A wireless charging receiving apparatus of a mobile terminal. The wireless charging receiving apparatus is configured to be disposed inside the mobile terminal and close to a metal rear housing of the mobile terminal, and includes two interconnected coils. The two coils are located in a same plane and are connected in series, and winding directions of the two coils are opposite, so that directions of magnetic fluxes generated by the two coils on the metal rear housing are opposite, thereby resolving a problem of an eddy current on the metal rear housing of the mobile terminal such as a smartphone including a wireless charging system, and reducing a temperature of a metal body and reducing an energy loss without forming a hole or a seam on the metal rear housing.

Wireless charging receiving apparatus, transmitting apparatus, and system of terminal

A wireless charging receiving circuit includes a coil, a first energy storage unit, a second energy storage unit, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, a fifth switch unit, a sixth switch unit, a filter unit, and a control unit. The coil is connected to the first energy storage unit, the second switch unit and the third switch unit. The first energy storage unit and the first switch unit are connected to the fifth switch unit, and the first switch unit is connected with the filter unit and the fourth switch unit at a first connection node. The fourth switch unit is connected with the second switch unit and the second energy storage unit, and the second energy storage unit is connected with the fifth switch unit, the sixth switch units and the coil.

Wireless charging receiving circuit and wireless charging receiver

A converter includes a first phase comprising a plurality of first phase switches connected in series between an input power source and ground, a second phase comprising a plurality of second phase switches connected in series between the input power source and ground, and a first flying capacitor of the first phase and a first flying capacitor of the second phase cross-coupled between the first phase and the second phase, wherein switches of the first phase and switches of the second phase are configured such that a ratio of an input voltage of the hybrid dual-phase step-down power converter to an output voltage of the hybrid dual-phase step-down power converter is equal to N/D, and wherein N is an integer, and D is a duty cycle of the hybrid dual-phase step-down power converter.

Growing community of inventors

San Jose, CA, United States of America

Songnan Yang