-
公开(公告)号：US10211723B2
公开(公告)日：2019-02-19
申请号：US15334332
申请日：2016-10-26
Applicant: MEDIATEK Inc.
Inventor： Shan-Fong Hong , Chih-Chen Li , Kuan-Yu Chu , Chien-Wei Kuan , Yen-Hsun Hsu
Abstract: The invention provides a regulator for DC-DC hybrid-mode power regulation of an output voltage and a load current. The regulator may include a controller and a back-end circuit. The controller controls the output voltage and the load current by charging a connection node when a driving signal is at an on-level, and stopping charging the connection node when the driving signal is at an off-level. The back-end circuit is coupled to the controller, capable of switching between a first mode and a second mode to control transition of the driving signal by different schemes. The back-end circuit switches from the second mode to the first mode when a mode-switch criterion is satisfied, and whether the mode-switch criterion is satisfied is independent of a measurement of the output voltage.
-
公开(公告)号：US09772637B2
公开(公告)日：2017-09-26
申请号：US13912821
申请日：2013-06-07
Applicant: MediaTek Inc.
Inventor： Chien-Wei Kuan , Jyh-Pyng Lay , Chih-Ching Yu , Yuh-Long Yeh
IPC: G05F1/46
CPC classification number: G05F1/46
Abstract: A voltage regulation circuit is provided. The voltage regulation circuit regulates a level of a supply voltage provided by an automotive battery. The voltage regulation circuit includes a selector and an error amplifier. The selector receives a plurality of predetermined voltages and selects one of the plurality of predetermined voltages according to a control signal to serve as a first reference voltage. The error amplifier generates an error signal according to the first reference voltage and a feedback signal. The feedback signal is related to the supply voltage. The voltage regulation circuit regulates the level of the supply voltage according to the error signal.
-
3.发明授权公开(公告)号：US11581854B2
公开(公告)日：2023-02-14
申请号：US16379720
申请日：2019-04-09
Applicant: MEDIATEK INC.
Inventor： Chen-Yen Ho , Chien-Wei Kuan , Sheng-Hong Yan , Hsin-Hung Chen
Abstract: A package or a chip including a linear amplifier and a power amplifier is provided, wherein the linear amplifier is configured to receive an envelope tracking signal to generate an amplified envelope tracking signal, the power amplifier is supplied by an envelope tracking supply voltage comprising a DC supply voltage and the amplified envelope tracking signal, and the power amplifier is configured to receive an input signal to generate an output signal.
-
公开(公告)号：US20190052238A1
公开(公告)日：2019-02-14
申请号：US16053806
申请日：2018-08-03
Applicant: MEDIATEK INC.
Inventor： Sheng-Hong Yan , Da-Wei Sung , Chen-Yen Ho , Chia-Sheng Peng , Chien-Wei Kuan
CPC classification number: H03F3/195 , H03F1/0211 , H03F1/0227 , H03F1/0238 , H03F3/211 , H03F3/213 , H03F3/245 , H03F2200/111 , H03F2200/213 , H03F2200/297 , H03F2200/411 , H03F2200/451 , H03F2203/21136 , H03F2203/21196 , H03F2203/7209
Abstract: A circuit module includes a power amplifier, a switch, and a bypass capacitor. The power amplifier has a signal input node coupled to an input signal, a signal output node to generate an output signal, and a power input node coupled to a supply output signal of a supply modulator. The switch is coupled between the power input node of the power amplifier and the bypass capacitor. The bypass capacitor is an equivalently removable bypass capacitor coupled between the switch and a ground level.
-
公开(公告)号：US09866119B2
公开(公告)日：2018-01-09
申请号：US15201626
申请日：2016-07-05
Applicant: MEDIATEK INC.
Inventor： Shih-Mei Lin , Chien-Wei Kuan , Chien-Lung Lee , Che-Hao Meng
CPC classification number: H02M3/158 , G05F1/618 , H02M1/08 , H02M2001/0009 , H02M2001/0045 , H02M2003/1566
Abstract: A DC-DC converter includes an inductor, a switch module, a pull-up circuit and a pull-down circuit. The inductor has a first node and a second node, and the second node is coupled to an output node of the DC-DC converter. The switch module is arranged for selectively connecting an input voltage or a ground voltage to the first node of the inductor according to a driving signal. The pull-up circuit is arranged for selectively providing a first current to the output node of the DC-DC converter. The pull-down circuit is arranged for selectively sinking a second current from the output node of the DC-DC converter. In addition, at least one of the first current provided by the pull-up circuit and the second current sunk by the pull-down circuit is determined based on an inductor current flowing through the inductor.
-
Patent Agency Ranking
公开(公告)号：US11251753B2
公开(公告)日：2022-02-15
申请号：US16853774
申请日：2020-04-21
Applicant: MEDIATEK INC.
Inventor： Chen-Yen Ho , Yen-Liang Chen , Chien-Wei Kuan
Abstract: An envelope tracking supply modulator includes an amplifier circuit and a zero peaking circuit. The amplifier circuit receives an envelope input, generates a modulated supply voltage according to the envelope input, and provides the modulated supply voltage to a power amplifier. The zero peaking circuit is coupled to the amplifier circuit, and applies zero peaking to the amplifier circuit, where the zero peaking inserts a zero at a frequency.
-
公开(公告)号：US09912306B1
公开(公告)日：2018-03-06
申请号：US15492013
申请日：2017-04-20
Applicant: MEDIATEK Inc.
Inventor： Shih-Mei Lin , Chien-Wei Kuan , Chen-Yen Ho , Che-Hao Meng , Tso-Min Chen , Chia-Sheng Peng , Sheng-Hong Yan
CPC classification number: H03F3/20 , H02M3/158 , H03F1/0227 , H03F3/195 , H03F3/245 , H03F3/68 , H03F2200/102 , H03F2200/105 , H03F2200/432
Abstract: Provided is a power supply circuit for a wireless mobile device having a plurality of power amplification components. The power supply circuit includes: a first DC-DC converter, for providing at least one constant output voltage (which is provided to the power amplification components) and/or at least one DC intermediate voltage; a second DC-DC converter, for providing a DC component of at least one time-varying output voltage; and at least one linear amplifier. When the at least one linear amplifier receives the at least one DC intermediate voltage from the first DC-DC converter, the at least one linear amplifier provides at least one AC component of the at least one time-varying output voltage. The DC component and the at least one AC component of the at least one time-varying output voltage are combined into the at least one time-varying output voltage and provided to the power amplification components.
-
公开(公告)号：US09735681B2
公开(公告)日：2017-08-15
申请号：US15038575
申请日：2015-01-14
Applicant: MediaTek Inc.
Inventor： Chien-Wei Kuan , Yen-Hsun Hsu , Tun-Shih Chen
CPC classification number: H02M3/158 , H02M1/08 , H02M3/04 , H02M3/1584 , H02M2001/0009 , H02M2001/0019 , H02M2003/1586
Abstract: A voltage converter is provided. The voltage converter includes a compensation circuit, a first comparator circuit, a first inductor, a first driver circuit, and a phase-lag circuit. The compensation circuit generates a first compensation signal according to a loading state of the voltage converter. The first comparator circuit compares the first compensation signal and a first reference signal to generate a first comparison signal. The first driver circuit generates a first driving voltage to the first inductor according to the first comparison signal. The phase-lag circuit is coupled between the first comparison circuit and the first driver. The phase-lag circuit modifies a duty of the first comparison signal for changing a first inductor current following the first inductor.
-
9.发明申请APPARATUS FOR PERFORMING HYBRID POWER CONTROL IN AN ELECTRONIC DEVICE WITH AID OF MULTIPLE SWITCHES CORRESPONDING MULTI-PURPOSE USAGE 审中-公开用于在具有多个开关的电子设备中执行混合动力控制的装置相关多用途公开(公告)号：US20160268836A1
公开(公告)日：2016-09-15
申请号：US15158567
申请日：2016-05-18
Applicant: MEDIATEK INC.
Inventor： Nien-Hui Kung , Chien-Wei Kuan , Yen-Hsun Hsu
CPC classification number: H02J7/045 , B60L11/1824 , B60L11/1851 , H02J7/0068 , H02J7/022 , H02J7/04 , H02M3/156 , H02M3/1584 , H05B33/0815 , Y02B20/346 , Y02T90/127
Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip. For example, the charger may include: a plurality of terminals that are positioned on the charger chip, where the plurality of terminals may include a third terminal and a fourth terminal; a plurality of switching units, positioned on the charger chip; and a control circuit, positioned on the charger chip and coupled to the plurality of switching units. The third terminal and the fourth terminal may be arranged for installing an inductor, where the inductor may be utilized by the charger when the control circuit configures the charger into any of at least two hardware configurations within a plurality of hardware configurations.
Abstract translation: 一种用于在电子设备中执行混合动力控制的装置包括位于电子设备中的充电器，并且充电器被布置用于选择性地对电子设备的电池充电。 此外，充电器的至少一部分被实现在充电器芯片内。 例如，充电器可以包括：位于充电器芯片上的多个终端，其中多个终端可以包括第三终端和第四终端; 多个开关单元，位于充电器芯片上; 以及位于充电器芯片上并耦合到多个开关单元的控制电路。 第三端子和第四端子可以布置成用于安装电感器，其中当控制电路将充电器配置为多个硬件配置中的至少两个硬件配置中的任何一个时，电感器可被充电器利用。
-
公开(公告)号：US11088660B2
公开(公告)日：2021-08-10
申请号：US16728193
申请日：2019-12-27
Applicant: MEDIATEK INC.
Inventor： Shih-Mei Lin , Chien-Wei Kuan , Che-Hao Meng , Chen-Yen Ho
Abstract: A power supply configured to supply a modulated voltage to a power amplifier is shown. The power supply has an alternating current (AC) component generator, a direct current (DC) component generator, and a transition accelerator. The AC component generator generates an AC component of the modulated voltage according to an envelope tracking signal. The DC component generator generates a DC component of the modulated voltage according to the operational voltage range of the power amplifier. The transition accelerator is coupled to an output terminal of the DC component generator to speed up the transition of the modulated voltage.
-
-
-
-
-
-
-
-
-
Search Results
26
records
(took 0.011 seconds)
