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公开(公告)号：US12095364B2
公开(公告)日：2024-09-17
申请号：US18063726
申请日：2022-12-09
Applicant: MEDIATEK INC.
Inventor： Chih-Chen Li , Jin-Yan Syu
IPC: H02M3/07
CPC classification number: H02M3/07
Abstract: A down-converted voltage regulator is provided. The first energy storage element provides a pre-charged voltage between a connection terminal and a ground terminal during the first phase. The second energy storage element has a first terminal, and it has a second terminal coupled to the output terminal of the voltage regulator. The third energy storage element is coupled between the output terminal of the voltage regulator and the ground terminal. During the first phase, the first terminal of the second energy storage element is coupled to the first energy storage element through the connection terminal to receive the pre-charged voltage. During the second phase, the first energy storage element is coupled between the input terminal and the output terminal of the voltage regulator to be pre-charged to store the pre-charged voltage, and the first terminal of the second energy storage element is coupled to the ground terminal.
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公开(公告)号：US11095222B2
公开(公告)日：2021-08-17
申请号：US15962910
申请日：2018-04-25
Applicant: MediaTek Inc.
Inventor： Chih-Chen Li , Yen-Hsun Hsu , Tzu-Chi Huang
Abstract: A high efficiency converter is provided. The converter can be used in applications requiring fast transient response under a first loading condition, and high efficiency under a second loading condition. The converter converts one or more input voltages via two or more conversion paths. Each of the two or more conversion paths corresponds to a different loading condition which indicates a magnitude of a load driven by the converter (e.g., heavy or light), and a target transient response of the load (e.g., fast or slow). A conversion path for a heavy or fast loading condition converts an input voltage directly to a target output voltage. A conversion path for a light or slow loading condition includes a two-stage architecture.
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公开(公告)号：US10763668B2
公开(公告)日：2020-09-01
申请号：US16103683
申请日：2018-08-14
Applicant: MediaTek Inc.
Inventor： Hua-Chiang Huang , Chih-Chen Li
Abstract: A converter is provided. The converter is capable of generating a loading current at an output node. The converter includes a high efficiency power channel and a fast transient response channel. The high efficiency power channel and the fast transient response channel share an inductor that is coupled to the output node. The high efficiency power channel has an additional inductor that is connected in series with the inductor coupled to the output node.
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公开(公告)号：US20240393411A1
公开(公告)日：2024-11-28
申请号：US18407478
申请日：2024-01-09
Applicant: MEDIATEK INC.
Inventor： Chih-Chen Li , Jin-Yan Syu
Abstract: A buck converter includes a first transistor, a second transistor, an inductor and a capacitor. The first transistor, the second transistor and the inductor are coupled to a switching node. A method includes charging the switching node for a predetermined duration using a first charging current, detecting a voltage at the switching node to obtain a first detection voltage, and determining the connection status of the inductor according to at least the first detection voltage.
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公开(公告)号：US20230223851A1
公开(公告)日：2023-07-13
申请号：US17987811
申请日：2022-11-15
Applicant: MEDIATEK INC.
Inventor： Jin-Yan Syu , Kuan-Yu Fang , Chih-Chen Li
IPC: H02M3/158
CPC classification number: H02M3/1586
Abstract: A transient boost controller for controlling a transient boost circuit of a voltage regulator includes a feedback circuit and a processing circuit. The feedback circuit obtains a first feedback signal and a second feedback signal sensed from an output capacitor of the voltage regulator, wherein the first feedback signal is derived from a voltage signal at a first plate of the output capacitor, and the second feedback signal is derived from a voltage signal at a second plate of the output capacitor. The processing circuit generates a detection result according to the first feedback signal and the second feedback signal, and outputs the detection result for controlling the transient boost circuit of the voltage regulator.
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Patent Agency Ranking
公开(公告)号：US12231048B2
公开(公告)日：2025-02-18
申请号：US17987811
申请日：2022-11-15
Applicant: MEDIATEK INC.
Inventor： Jin-Yan Syu , Kuan-Yu Fang , Chih-Chen Li
IPC: H02M3/158
Abstract: A transient boost controller for controlling a transient boost circuit of a voltage regulator includes a feedback circuit and a processing circuit. The feedback circuit obtains a first feedback signal and a second feedback signal sensed from an output capacitor of the voltage regulator, wherein the first feedback signal is derived from a voltage signal at a first plate of the output capacitor, and the second feedback signal is derived from a voltage signal at a second plate of the output capacitor. The processing circuit generates a detection result according to the first feedback signal and the second feedback signal, and outputs the detection result for controlling the transient boost circuit of the voltage regulator.
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公开(公告)号：US09899920B2
公开(公告)日：2018-02-20
申请号：US15172120
申请日：2016-06-02
Applicant: MEDIATEK INC.
Inventor： Chien-Wei Kuan , Yen-Hsun Hsu , Shan-Fong Hong , Chih-Chen Li , Yu-Te Chao
CPC classification number: H02M3/158 , H02M1/08 , H02M1/14 , H02M3/1584 , H02M2001/0009 , H02M2001/0032 , H02M2001/0048 , H02M2003/1586 , Y02B70/1491 , Y02B70/16
Abstract: A voltage regulator includes a plurality of output stages and a controller. The plurality of output stages are arranged for selectively enabling to generate output voltages and output currents or not according to a plurality of control signals, respectively. The controller is arranged for sensing the output currents of the output stages, and generating the control signals according to the sensed output currents. When the controller generates the control signals to reduce a quantity of the enabled output stages, the controller determines whether a summation of the sensed output currents is greater than a first threshold or not to determine whether to enable more output stages, then a period of time later, the controller selectively determines whether the summation of the sensed output currents is greater than a second threshold or not to determine whether to enable more output stages, wherein the second threshold is lower than the first threshold.
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8.发明申请VOLTAGE REGULATOR AND METHOD FOR CONTROLLING OUTPUT STAGES OF VOLTAGE REGULATOR 有权用于控制电压调节器的输出阶段的电压调节器和方法公开(公告)号：US20170077811A1
公开(公告)日：2017-03-16
申请号：US15172120
申请日：2016-06-02
Applicant: MEDIATEK INC.
Inventor： Chien-Wei Kuan , Yen-Hsun Hsu , Shan-Fong Hong , Chih-Chen Li , Yu-Te Chao
CPC classification number: H02M3/158 , H02M1/08 , H02M1/14 , H02M3/1584 , H02M2001/0009 , H02M2001/0032 , H02M2001/0048 , H02M2003/1586 , Y02B70/1491 , Y02B70/16
Abstract: A voltage regulator includes a plurality of output stages and a controller. The plurality of output stages are arranged for selectively enabling to generate output voltages and output currents or not according to a plurality of control signals, respectively. The controller is arranged for sensing the output currents of the output stages, and generating the control signals according to the sensed output currents. When the controller generates the control signals to reduce a quantity of the enabled output stages, the controller determines whether a summation of the sensed output currents is greater than a first threshold or not to determine whether to enable more output stages, then a period of time later, the controller selectively determines whether the summation of the sensed output currents is greater than a second threshold or not to determine whether to enable more output stages, wherein the second threshold is lower than the first threshold.
Abstract translation: 电压调节器包括多个输出级和控制器。 多个输出级被布置用于分别根据多个控制信号选择性地产生输出电压和输出电流。 控制器被布置用于感测输出级的输出电流，并根据感测的输出电流产生控制信号。 当控制器产生控制信号以减少使能的输出级的数量时，控制器确定所感测的输出电流的总和是否大于第一阈值，以确定是否启用更多的输出级，然后是一段时间 之后，控制器选择性地确定所感测的输出电流的总和是否大于第二阈值，以确定是否启用更多输出级，其中第二阈值低于第一阈值。
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公开(公告)号：US10396771B2
公开(公告)日：2019-08-27
申请号：US15921513
申请日：2018-03-14
Applicant: MediaTek Inc.
Inventor： Chih-Chen Li , Kuan-Yu Fang , Kuan-Yu Chu , Yen-Hsun Hsu
Abstract: A voltage supply circuit is provided. The voltage supply circuit is capable of generating a loading current at an output node. The voltage supply circuit includes a plurality of inductors and a plurality of driver circuits. The plurality of inductors are coupled to the output node. Each inductor has an inductance value. The plurality of driver circuits are coupled to the plurality of inductors, respectively. The inductance values of at least two inductors among the plurality of inductors are greater than the inductance value of another inductor.
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公开(公告)号：US20190131789A1
公开(公告)日：2019-05-02
申请号：US16103683
申请日：2018-08-14
Applicant: MediaTek Inc.
Inventor： Hua-Chiang Huang , Chih-Chen Li
Abstract: A converter is provided. The converter is capable of generating a loading current at an output node. The converter includes a high efficiency power channel and a fast transient response channel. The high efficiency power channel and the fast transient response channel share an inductor that is coupled to the output node. The high efficiency power channel has an additional inductor that is connected in series with the inductor coupled to the output node.
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