公开(公告)号：US10291127B2

公开(公告)日：2019-05-14

申请号：US15007819

申请日：2016-01-27

Applicant: MediaTek Inc.

Inventor： Hasnain Akram ,  Patrick Stanley Riehl

IPC: H02M3/158 ,  H02M3/335 ,  H02M1/00

Abstract: Methods and circuits for controlling a synchronous rectifier. An operating condition of the synchronous rectifier is detected. A voltage level applied to turn on at least one transistor of the synchronous rectifier us modified based upon the detected operating condition, to improve efficiency of the synchronous rectifier.

公开(公告)号：US20160261191A1

公开(公告)日：2016-09-08

申请号：US15007819

申请日：2016-01-27

Applicant: MediaTek Inc.

Inventor： Hasnain Akram ,  Patrick Stanley Riehl

IPC: H02M3/158

CPC classification number: H02M3/1588 ,  H02M3/33592 ,  H02M2001/0009 ,  Y02B70/1475

Abstract: Methods and circuits for controlling a synchronous rectifier. An operating condition of the synchronous rectifier is detected. A voltage level applied to turn on at least one transistor of the synchronous rectifier us modified based upon the detected operating condition, to improve efficiency of the synchronous rectifier.

Abstract translation: 用于控制同步整流器的方法和电路。 检测同步整流器的工作状态。 根据检测到的工作条件，施加电压电平以接通同步整流器的至少一个晶体管，以提高同步整流器的效率。

公开(公告)号：US10326314B2

公开(公告)日：2019-06-18

申请号：US15411749

申请日：2017-01-20

Applicant: MediaTek Inc.

Inventor： Patrick Stanley Riehl ,  Hasnain Akram ,  Philip Frank Tustin

IPC: H02J50/12 ,  H03F3/217 ,  H03F3/24 ,  H02J50/40 ,  H02J50/60 ,  H02J7/02

Abstract: A wireless power transmitter includes an inverter in which a voltage varies in response to a resonant network and circuitry configured to (A) measure a characteristic indicative of a load seen by the wireless power transmitter, (B) determine a duty cycle of the inverter based upon the characteristic, and (C) switch the inverter with the determined duty cycle.

公开(公告)号：US20170302110A1

公开(公告)日：2017-10-19

申请号：US15411749

申请日：2017-01-20

Applicant: MediaTek Inc.

Inventor： Patrick Stanley Riehl ,  Hasnain Akram ,  Philip Frank Tustin

IPC: H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J7/02

CPC classification number: H02J50/12 ,  H02J7/025 ,  H02J50/40 ,  H02J50/60 ,  H03F3/2176 ,  H03F3/245

Abstract: A wireless power transmitter includes an inverter in which a voltage varies in response to a resonant network and circuitry configured to (A) measure a characteristic indicative of a load seen by the wireless power transmitter, (B) determine a duty cycle of the inverter based upon the characteristic, and (C) switch the inverter with the determined duty cycle.