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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.
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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.
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3.发明申请公开(公告)号：US20170040898A1
公开(公告)日：2017-02-09
申请号：US15209750
申请日：2016-07-13
Applicant: MEDIATEK INC.
Inventor： Hao-Ping Hong , Shih-Mei Lin
CPC classification number: H02M3/1582 , G05F1/62 , H02M3/158 , H02M3/1584 , H02M3/1588 , H02M2001/0054 , Y02B70/1491
Abstract: A buck-boost converter includes an inductor, a first switch, a second switch, a third switch, a fourth switch and a fifth switch, wherein the first switch is coupled between an input voltage and a first terminal of the inductor, the second switch is coupled between a reference voltage and the first terminal of the inductor, the third switch is coupled between an output voltage and a second terminal of the inductor, the fourth switch is coupled between the reference voltage and the second terminal of the inductor, and the fifth switch is connected in parallel with the third switch. When the buck-boost converter operates in a buck mode, the first switch and the second switch are turned on alternately; when the buck-boost converter operates in a boost mode, the third switch and the fourth switch are turned on alternately; and the fifth switch is controlled by a mode control signal.
Abstract translation: 降压升压转换器包括电感器，第一开关，第二开关，第三开关，第四开关和第五开关，其中第一开关耦合在电感器的输入电压和第一端之间，第二开关 耦合在参考电压和电感器的第一端之间，第三开关耦合在电感器的输出电压和第二端之间，第四开关耦合在参考电压和电感器的第二端之间，并且 第五开关与第三开关并联连接。 当降压 - 升压转换器以降压模式工作时，第一开关和第二开关交替地导通; 当降压 - 升压转换器以升压模式工作时，第三开关和第四开关交替地接通; 并且第五开关由模式控制信号控制。
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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.
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公开(公告)号：US10122258B2
公开(公告)日：2018-11-06
申请号：US15826715
申请日：2017-11-30
Applicant: MEDIATEK INC.
Inventor： Shih-Mei Lin , Chien-Wei Kuan , Chien-Lung Lee , Che-Hao Meng
Abstract: A DC-DC converter includes an inductor, a switch module, and a pull-up circuit or 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, the first current or the second current is determined based on an inductor current flowing through the inductor.
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Patent Agency Ranking
公开(公告)号：US20180083526A1
公开(公告)日：2018-03-22
申请号：US15826715
申请日：2017-11-30
Applicant: MEDIATEK INC.
Inventor： Shih-Mei Lin , Chien-Wei Kuan , Chien-Lung Lee , Che-Hao Meng
CPC classification number: H02M1/143 , G05F1/618 , H02M1/08 , H02M3/158 , H02M2001/0009 , H02M2001/0045 , H02M2003/1566
Abstract: A DC-DC converter includes an inductor, a switch module, and a pull-up circuit or 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, the first current or the second current is determined based on an inductor current flowing through the inductor.
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公开(公告)号：US10673385B2
公开(公告)日：2020-06-02
申请号：US16040594
申请日：2018-07-20
Applicant: MEDIATEK Inc.
Inventor： Shih-Mei Lin , Che-Hao Meng , Da-Wei Sung , Chien-Wei Kuan
Abstract: A supply modulator, a modulated power supply circuit, and associated control method are provided. The modulated power supply circuit includes the supply modulator and a DC-DC voltage converter, and the supply modulator includes a linear amplifier and a switching converter. The linear amplifier generates an AC component of a modulated voltage according to a regulated voltage and an envelope tracking signal. The supply voltage is converted to the regulated voltage by the DC-DC voltage converter, and the regulated voltage is greater than or less than the supply voltage. The switching converter includes a step-down circuit and a path selection circuit. The path selection circuit selects one of the supply voltage and the regulated voltage as a DC input voltage. The step-down circuit converts the DC input voltage to a DC component of the modulated voltage which is less than the DC input voltage.
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公开(公告)号：US20180048272A1
公开(公告)日：2018-02-15
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.
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公开(公告)号：US09831780B2
公开(公告)日：2017-11-28
申请号：US15209750
申请日：2016-07-13
Applicant: MEDIATEK INC.
Inventor： Hao-Ping Hong , Shih-Mei Lin
CPC classification number: H02M3/1582 , G05F1/62 , H02M3/158 , H02M3/1584 , H02M3/1588 , H02M2001/0054 , Y02B70/1491
Abstract: A buck-boost converter includes an inductor, a first switch, a second switch, a third switch, a fourth switch and a fifth switch, wherein the first switch is coupled between an input voltage and a first terminal of the inductor, the second switch is coupled between a reference voltage and the first terminal of the inductor, the third switch is coupled between an output voltage and a second terminal of the inductor, the fourth switch is coupled between the reference voltage and the second terminal of the inductor, and the fifth switch is connected in parallel with the third switch. When the buck-boost converter operates in a buck mode, the first switch and the second switch are turned on alternately; when the buck-boost converter operates in a boost mode, the third switch and the fourth switch are turned on alternately; and the fifth switch is controlled by a mode control signal.
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公开(公告)号：US20170222556A1
公开(公告)日：2017-08-03
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.
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