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公开(公告)号：US20210159790A1
公开(公告)日：2021-05-27
申请号：US17079517
申请日：2020-10-25
Applicant: MEDIATEK INC.
Inventor： Chun-Yen Tseng , Hao-Ping Hong , Chih-Wei Lin
Abstract: A buck converter includes an output stage, a FCVB control circuit and a driver. The output stage includes a plurality of switches and a flying capacitor, wherein the switches are connected in series, the flying capacitor is coupled between two of the switches, and the output stage is configured to receive an input voltage to generate an output voltage. The FCVB control circuit is configured to compare a voltage of the flying capacitor with half of the input voltage to generate a comparison result, and the FCVB control circuit further responds to the comparison result to generate a first control signal and a second control signal based on a first PWM signal and a second PWM signal. The driver is configured to generate a plurality of diving signals according to the first control signal and the second control signal, wherein the driving signals are arranged to control the switches, respectively.
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Patent Agency Ranking
公开(公告)号：US20190190518A1
公开(公告)日：2019-06-20
申请号：US16216805
申请日：2018-12-11
Applicant: MediaTek Inc.
Inventor： Yun-Yao Hung , Chien-Lung Lee , Shao-Siang Ng , Chun-Yen Tseng
IPC: H03K17/16 , H03K17/081
CPC classification number: H03K17/168 , H03K17/08116 , H03K17/166 , H03K2217/0036
Abstract: Systems and methods are described herein for controlling a switch. In some embodiments, circuitry may detect a voltage across the switch. A current reference signal may be generated based on the voltage across the switch. The switch may be controlled based, at least in part, on the current reference signal.
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公开(公告)号：US09071200B2
公开(公告)日：2015-06-30
申请号：US14336137
申请日：2014-07-21
Applicant: MediaTek Inc.
Inventor： Chun-Yen Tseng , Yen-Hsun Hsu
CPC classification number: H03F3/195 , H03F1/0227 , H03F3/21 , H03F2200/102 , H03F2200/451 , H03F2200/504
Abstract: A power module at least includes an ET (Envelope Tracking) module. The ET module includes a buck converter, an inductor, and a capacitor. The buck converter is coupled to a work voltage. The buck converter has a first input terminal for receiving a first control signal, a second input terminal coupled to a supply node, and a buck output terminal The inductor is coupled between the buck output terminal of the buck converter and the supply node. The capacitor is coupled between the supply node and a ground voltage. The ET module is configured to supply a first adaptive supply voltage at the supply node. The first adaptive supply voltage is determined according to the first control signal.
Abstract translation: 电源模块至少包括ET（信封跟踪）模块。 ET模块包括降压转换器，电感器和电容器。 降压转换器耦合到工作电压。 降压转换器具有用于接收第一控制信号的第一输入端子，耦合到电源节点的第二输入端子和降压输出端子。电感器耦合在降压转换器的降压输出端子和电源节点之间。 电容器耦合在电源节点和接地电压之间。 ET模块被配置为在供应节点处提供第一自适应电源电压。 第一自适应电源电压根据第一控制信号确定。
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公开(公告)号：US11502604B2
公开(公告)日：2022-11-15
申请号：US17079517
申请日：2020-10-25
Applicant: MEDIATEK INC.
Inventor： Chun-Yen Tseng , Hao-Ping Hong , Chih-Wei Lin
Abstract: A buck converter includes an output stage, a FCVB control circuit and a driver. The output stage includes a plurality of switches and a flying capacitor, wherein the switches are connected in series, the flying capacitor is coupled between two of the switches, and the output stage is configured to receive an input voltage to generate an output voltage. The FCVB control circuit is configured to compare a voltage of the flying capacitor with half of the input voltage to generate a comparison result, and the FCVB control circuit further responds to the comparison result to generate a first control signal and a second control signal based on a first PWM signal and a second PWM signal. The driver is configured to generate a plurality of diving signals according to the first control signal and the second control signal, wherein the driving signals are arranged to control the switches, respectively.
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公开(公告)号：US12003230B2
公开(公告)日：2024-06-04
申请号：US16216805
申请日：2018-12-11
Applicant: MediaTek Inc.
Inventor： Yun-Yao Hung , Chien-Lung Lee , Shao-Siang Ng , Chun-Yen Tseng
IPC: H03K17/16 , H03K17/081
CPC classification number: H03K17/168 , H03K17/08116 , H03K17/166 , H03K2217/0036
Abstract: Systems and methods are described herein for controlling a switch. In some embodiments, circuitry may detect a voltage across the switch. A current reference signal may be generated based on the voltage across the switch. The switch may be controlled based, at least in part, on the current reference signal.
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公开(公告)号：US09473089B2
公开(公告)日：2016-10-18
申请号：US14272615
申请日：2014-05-08
Applicant: MediaTek Inc.
Inventor： Hao-Ping Hong , Hung-I Wang , Chun-Yen Tseng , Yen-Hsun Hsu
CPC classification number: H03F3/245 , H03F1/0227 , H03F1/0238 , H03F1/30 , H03F3/19 , H03F3/21 , H03F2200/102 , H03F2200/432 , H03F2200/451 , H03F2200/459
Abstract: A hybrid power module for supplying a power to a power amplifier is provided. The hybrid power module includes a DC-DC converter and a linear regulator. The DC-DC converter provides a first current to the power amplifier via a first inductor according to an operating frequency and an envelope tracking signal. The linear regulator provides a second current to the power amplifier via a first capacitor according to the envelope tracking signal. A switch-mode power supply (SMPS) ripple voltage caused by the DC-DC converter is reduced by the linear regulator.
Abstract translation: 提供了一种用于向功率放大器供电的混合电源模块。 混合电源模块包括一个DC-DC转换器和一个线性稳压器。 DC-DC转换器根据工作频率和包络跟踪信号，经由第一电感器向功率放大器提供第一电流。 线性调节器根据包络跟踪信号经由第一电容器向功率放大器提供第二电流。 由DC-DC转换器引起的开关电源（SMPS）纹波电压由线性稳压器降低。
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