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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.
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公开(公告)号：US20180262097A1
公开(公告)日：2018-09-13
申请号：US15912396
申请日：2018-03-05
Applicant: MediaTek Inc.
Inventor： Kuan-Yu Chu , HuaChiang Huang , Chih-Chen Li , Shan-Fong Hong
IPC: H02M1/08
Abstract: An inverter circuit may include an inverter, a driver coupled to the inverter, and a slew rate control module configured to modify a slew rate of the driver. The slew rate may be modified based on a magnitude of a load driven by the inverter circuit. The magnitude of the load driven by the inverter circuit may be indicated by a current representing a load current or a voltage representing an input voltage. The slew rate may also be modified based on a mode configuration of the inverter circuit.
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公开(公告)号：US20180205371A1
公开(公告)日：2018-07-19
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
IPC: H03K17/00
CPC classification number: H03K17/005 , G06F1/30
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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Patent Agency Ranking
14.发明公开公开(公告)号：US20230223849A1
公开(公告)日：2023-07-13
申请号：US17985919
申请日：2022-11-14
Applicant: MEDIATEK INC.
Inventor： Chih-Chen Li , Jin-Yan Syu
CPC classification number: H02M3/157 , H02M1/0009 , H02M1/0006 , H02M1/0025 , H02M1/08
Abstract: A feedback circuit of a voltage regulator with adaptive voltage positioning (AVP) includes a first sensing circuit, a second sensing circuit, a third sensing circuit, and a processing circuit. The first sensing circuit generates a first feedback signal that provides information of an inductor current of the voltage regulator. The second sensing circuit generates a second feedback signal that provides information of an output voltage of the voltage regulator. The third sensing circuit generates a third feedback signal that provides information of a capacitor current of an output capacitor of the voltage regulator. The processing circuit generates a control voltage signal according to the first feedback signal, the second feedback signal, and the third feedback signal, and outputs the control voltage signal to a controller circuit of the voltage regulator for regulating the output voltage of the voltage regulator.
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公开(公告)号：US10784763B2
公开(公告)日：2020-09-22
申请号：US15912396
申请日：2018-03-05
Applicant: MediaTek Inc.
Inventor： Kuan-Yu Chu , HuaChiang Huang , Chih-Chen Li , Shan-Fong Hong
Abstract: An inverter circuit may include an inverter, a driver coupled to the inverter, and a slew rate control module configured to modify a slew rate of the driver. The slew rate may be modified based on a magnitude of a load driven by the inverter circuit. The magnitude of the load driven by the inverter circuit may be indicated by a current representing a load current or a voltage representing an input voltage. The slew rate may also be modified based on a mode configuration of the inverter circuit.
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公开(公告)号：US20190089252A1
公开(公告)日：2019-03-21
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：US10211732B2
公开(公告)日：2019-02-19
申请号：US15240362
申请日：2016-08-18
Applicant: MediaTek Inc.
Inventor： Chih-Chen Li , Kuan-Yu Chu , Shan-Fong Hong
Abstract: An SMPS (Switched Mode Power Supply) circuit includes a first switch element, a second switch element, an inductor, a capacitor, a current sensor, a current comparator, and a controller. The first switch element is coupled between a first power node and a switch node. The second switch element is coupled between the switch node and a second power node. The inductor is coupled between the switch node and an output node. The capacitor is coupled between the output node and the second power node. The current sensor detects a switch current through the second switch element. The current comparator compares the switch current with a first reference current to generate a comparison signal. The controller controls the first switch element and the second switch element according to the comparison signal and a switch voltage at the switch node. The invention can avoid an excessive SMPS output current.
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公开(公告)号：US20170310211A1
公开(公告)日：2017-10-26
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
CPC classification number: H02M3/04 , H02M1/08 , H02M3/156 , H02M2001/0032 , Y02B70/16
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.
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