公开(公告)号：US10177602B2

公开(公告)日：2019-01-08

申请号：US15037051

申请日：2015-01-08

Applicant: MediaTek Singapore Pte. Ltd.

Inventor： Hasnain Akram ,  Yung-Chih Yen ,  Patrick Stanley Riehl ,  Anand Satyamoorthy

IPC: H02M3/156 ,  H02J50/12 ,  H01F38/14 ,  H02J5/00 ,  H02J7/02 ,  H02M3/07 ,  H02M7/217 ,  H04B5/00 ,  G05F1/575 ,  G05F1/56 ,  H02M1/00 ,  H02M7/219

CPC classification number: H02J50/12 ,  G05F1/56 ,  G05F1/575 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02M3/07 ,  H02M3/156 ,  H02M7/217 ,  H02M2001/0045 ,  H02M2007/2195 ,  H04B5/0037 ,  Y02B70/1408 ,  Y02B70/1425 ,  Y02B70/1441

Abstract: A synchronous rectifier using only n-channel devices in which the low-side switches are effectively cross-coupled using low-side comparators and the high-side switches perform an accurate zero-voltage-switching (ZVS) comparison. The charging path of each bootstrap domain is completed through the low-side switches, which are each always on for every half-cycle independent of loading. This scheme gives rectifier efficiency gain because a) each bootstrap domain receives maximum charging time, and b) the charging occurs through a switch rather than a diode. Both these factors ensure the bootstrap domain is fully charged, thereby reducing conduction losses through the rectifier switches. Furthermore, settings may be adjusted by software to optimize the resistive and capacitive losses of the rectifier. Using data for die temperature and operating frequency, software can create a feedback loop, dynamically adjusting rectifier settings in order to achieve the best possible efficiency.

公开(公告)号：US11860660B2

公开(公告)日：2024-01-02

申请号：US17732541

申请日：2022-04-29

Applicant: MediaTek Singapore Pte. Ltd.

Inventor： Man Pun Chan ,  Hao-Ping Hong ,  Yung-Chih Yen ,  Chien-Hui Wang ,  Cheng-Hsuan Fan ,  Jian-Rong Huang

IPC: G05F1/575 ,  G05F1/46 ,  H02M3/157

CPC classification number: G05F1/575 ,  G05F1/462 ,  H02M3/157

Abstract: A sub-circuit of a voltage regulator includes a load condition detection circuit and a controllable circuit. The load condition detection circuit is arranged to detect a load transient frequency of a load powered by the voltage regulator, and generate a control signal according to a detection result of the load transient frequency. The controllable circuit is arranged to receive the control signal, wherein an operational behavior of the controllable circuit dynamically changes in response to the control signal.

公开(公告)号：US20220390973A1

公开(公告)日：2022-12-08

申请号：US17732541

申请日：2022-04-29

Applicant: MediaTek Singapore Pte. Ltd.

Inventor： Man Pun Chan ,  Hao-Ping Hong ,  Yung-Chih Yen ,  Chien-Hui Wang ,  Cheng-Hsuan Fan ,  Jian-Rong Huang

IPC: G05F1/575 ,  G05F1/46 ,  H02M3/157

Abstract: A sub-circuit of a voltage regulator includes a load condition detection circuit and a controllable circuit. The load condition detection circuit is arranged to detect a load transient frequency of a load powered by the voltage regulator, and generate a control signal according to a detection result of the load transient frequency. The controllable circuit is arranged to receive the control signal, wherein an operational behavior of the controllable circuit dynamically changes in response to the control signal.

公开(公告)号：US20150364928A1

公开(公告)日：2015-12-17

申请号：US14763829

申请日：2015-01-08

Applicant: MEDIATEK SINGAPORE PTE. LTD.

Inventor： Yung-Chih Yen ,  Patrick Stanley Riehl ,  HASNAIN AKRAM ,  Anand Satyamoorthy

IPC: H02J5/00 ,  H01F38/14 ,  G05F1/56 ,  H02J7/02

CPC classification number: H02J50/12 ,  G05F1/56 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02M3/07 ,  H02M3/156 ,  H02M7/217 ,  H02M2001/0045 ,  H02M2007/2195 ,  H04B5/0037 ,  Y02B70/1408 ,  Y02B70/1425 ,  Y02B70/1441

Abstract: A wireless power receiver IC in which the power path can be reconfigured as either a low-dropout regulator (LDO), a switched-mode power supply (SMPS) or a power switch (PSW) is provided. All three modes share the same pass device to reduce die area and share the same output terminal to reduce pin. In an inductive wireless receiver, the power path can be reprogrammed on the fly to LDO or PSW mode or can be reprogrammed on the fly to SMPS or PSW mode. In a resonant or multi-mode wireless receiver, the power path can be reprogrammed on the fly to SMPS or PSW mode. Furthermore, to achieve high power transfer efficiency performance, using N-channel MOSFET as its pass device has better efficiency and smaller die area than P-channel MOSFET pass device.

Abstract translation: 提供其中电力路径可以被重新配置为低压差稳压器（LDO），开关模式电源（SMPS）或电源开关（PSW）的无线电力接收器IC。 所有三种模式共享相同的通过器件，以减少管芯面积并共享相同的输出端子以减少引脚。 在感应式无线接收机中，电源路径可以快速重新编程为LDO或PSW模式，或者可以在飞行中重新编程为SMPS或PSW模式。 在谐振或多模式无线接收器中，电源路径可以在飞行中重新编程为SMPS或PSW模式。 此外，为了实现高功率传输效率性能，使用N沟道MOSFET作为其通过器件比P沟道MOSFET通过器件具有更好的效率和更小的管芯面积。