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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：US20180054121A1
公开(公告)日：2018-02-22
申请号：US15461559
申请日：2017-03-17
Applicant: MEDIATEK Inc.
Inventor： Tso-Min Chen , Chien-Wei Kuan , Yen-Hsun Hsu
CPC classification number: H02M3/158 , H02M1/08 , H02M2001/0009 , H02M2001/0048 , H02M2001/0058
Abstract: A power conversion circuit includes an input terminal, a first switching element, a second switching element, a third switching element, a fourth switching element, a capacitor; an inductor; and a controller configured to control the switching elements to be switched ON/OFF, such that a voltage at the load is regulated by repetitively (1) charging the inductor with a first current before charging the capacitor causing a second current to flow in the inductor and (2) charging the inductor with a third current before discharging the capacitor causing a fourth current to flow in the inductor.
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公开(公告)号：US09923465B2
公开(公告)日：2018-03-20
申请号：US15461559
申请日：2017-03-17
Applicant: MEDIATEK Inc.
Inventor： Tso-Min Chen , Chien-Wei Kuan , Yen-Hsun Hsu
CPC classification number: H02M3/158 , H02M1/08 , H02M2001/0009 , H02M2001/0048 , H02M2001/0058
Abstract: A power conversion circuit includes an input terminal, a first switching element, a second switching element, a third switching element, a fourth switching element, a capacitor; an inductor; and a controller configured to control the switching elements to be switched ON/OFF, such that a voltage at the load is regulated by repetitively (1) charging the inductor with a first current before charging the capacitor causing a second current to flow in the inductor and (2) charging the inductor with a third current before discharging the capacitor causing a fourth current to flow in the inductor.
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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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