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公开(公告)号：US12117472B2
公开(公告)日：2024-10-15
申请号：US17873795
申请日：2022-07-26
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Jaeseung Lee , Sungmin Yoo , Taehwang Kong , Junhyeok Yang
IPC: G01R23/10
CPC classification number: G01R23/10
Abstract: An oscillation detector includes an amplitude variation detection circuit configured to generate a first pulse signal by comparing levels of voltages with each other, a frequency variation detection circuit configured to generate a second pulse signal by filtering the first pulse signal and allowing to pass a frequency component that is less than or equal to a certain frequency among frequency components of the first pulse signal, and a time variation detection circuit configured to output an oscillation detection signal when the second pulse signal has consecutive pulses for a period of time.
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公开(公告)号：US20250125724A1
公开(公告)日：2025-04-17
申请号：US18909152
申请日：2024-10-08
Applicant: Samsung Electronics Co., Ltd.
Inventor： Doojin Jang , Hyunsik Kim , Junhyeok Yang , Sungmin Yoo , Honghyun Bae
Abstract: Provided is a hybrid buck converter including a first PMOS transistor and a second PMOS transistor electrically connecting a power supply voltage node with a first switching node, a first NMOS transistor and a second NMOS transistor electrically connecting a ground node with the first switching node, an inductor electrically connecting the first switching node with a second switching node, a third NMOS transistor electrically connecting the second switching node with a first output node, a third PMOS transistor electrically connecting the second switching node with a second output node, a shunt regulator that is driven based on a second output voltage of the second output node, a first PWM controller adjusting, based on a pulse width control of first PMOS transistor and first NMOS transistor, a magnitude of an inductor current, and a second PWM controller adjusting, based on a pulse width control of first PMOS transistor and first NMOS transistor, a magnitude of the second output voltage.
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公开(公告)号：US12283884B2
公开(公告)日：2025-04-22
申请号：US17993603
申请日：2022-11-23
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sungmin Yoo , Minsu Kim , Hyungmin Lee , Taehwang Kong , Junhyeok Yang , Woojoong Jung
Abstract: The present disclosure refers to direct current-to-direct current (DC-DC) converters and power supplies including the same. In an embodiment, a DC-DC converter includes a first switching circuit, a second switching circuit, a fourth capacitor coupled to a second node, and an inductor-capacitor (LC) filter coupled to a third node. The first switching circuit includes a first transistor coupled between a first capacitor and an input node, a second transistor coupled between the first capacitor and a second capacitor, a third transistor coupled between a first node and a third capacitor, and a fourth transistor coupled between the third capacitor and a ground node. The second switching circuit includes a fifth transistor coupled between the second capacitor and the third capacitor, a sixth transistor and a seventh transistor coupled between the first capacitor and the third capacitor, and an eighth transistor coupled between the first capacitor and the ground node.
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Patent Agency Ranking
公开(公告)号：US11804778B2
公开(公告)日：2023-10-31
申请号：US17389806
申请日：2021-07-30
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sungmin Yoo , Taehwang Kong , Sangho Kim , Junhyeok Yang , Hyungmin Lee , Yunho Lee , Woojoong Jung
CPC classification number: H02M3/1588 , H02M1/08 , H02M3/157
Abstract: A direct-current (DC)-DC converter includes a converting circuit including an inductor element. The converting circuit is configured to generate an output voltage from an input voltage based on a switching operation. An inductor current emulator is configured to adjust at least one parameter for changing a current peak value of the inductor element in response to a change in a level of the input voltage and is configured to generate an internal voltage based on the at least one parameter, which is adjusted. The inductor current emulator is configured to generate a control signal for controlling the switching operation such that current of the inductor element has a pattern corresponding to a pattern of the internal voltage.
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公开(公告)号：US11543841B2
公开(公告)日：2023-01-03
申请号：US17069500
申请日：2020-10-13
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sungmin Yoo , Joowon Park , Tae-Hwang Kong , Sangho Kim , Hyunmyoung Kim , Jaeseung Lee
IPC: G05F1/46 , G05F3/16 , G06F1/3206 , G05F1/565
Abstract: A power manager circuit is provided. The power manager circuit includes a bandgap reference circuit, first and second monitoring circuits, and a reference buffer. The bandgap reference circuit generates a first voltage, based on an external voltage that is external to the power manager circuit. The first monitoring circuit determines a logical value of a first alarm signal, based on whether a first voltage level of the first voltage is within a first range. The reference buffer generates a second voltage, based on the first voltage. The second monitoring circuit determines a logical value of a second alarm signal, based on whether a second voltage level of the second voltage is within a second range.
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公开(公告)号：US20220385186A1
公开(公告)日：2022-12-01
申请号：US17828829
申请日：2022-05-31
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sungmin Yoo , Hyungmin Lee , Woojoong Jung , Taehwang Kong , Junhyeok Yang , Yunho Lee
IPC: H02M3/158
Abstract: A DC-DC buck converter for generating an output voltage by stepping down an input voltage includes a converting circuit including a plurality of transistors, a first capacitor, a second capacitor, and an inductor, the converting circuit being configured to form a current path that varies according to a plurality of modes and a plurality of phases; and a control circuit configured to: determine a mode of the converting circuit, from among the plurality of modes, according to a first amplitude of the input voltage and a second amplitude of the output voltage, and determine an ON/OFF state of each transistor of the plurality of transistors according to the determined mode and a phase from among the plurality of phases.
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7.发明授权公开(公告)号：US11196344B2
公开(公告)日：2021-12-07
申请号：US16788783
申请日：2020-02-12
Inventor： Sungmin Yoo , Hyungmin Lee , Taehwang Kong , Sangho Kim , Seun Shin , Junhyeok Yang , Woojoong Jung
Abstract: A direct current (DC)-DC converter including: a power switching circuit including a first switch circuit and a second switch circuit that are connected in parallel to a switching node, the first switch circuit and the second switch circuit configured to generate a switching voltage signal through the switching node in response to an input DC voltage and configured to perform complementary switching operations to control a voltage level of the switching voltage signal; and a filter circuit configured to filter the switching voltage signal to generate an output DC voltage.
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公开(公告)号：US12212242B2
公开(公告)日：2025-01-28
申请号：US18468893
申请日：2023-09-18
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sungmin Yoo , Taehwang Kong , Sangho Kim , Junhyeok Yang , Hyungmin Lee , Yunho Lee , Woojoong Jung
Abstract: A direct-current (DC)-DC converter includes a converting circuit including an inductor element. The converting circuit is configured to generate an output voltage from an input voltage based on a switching operation. An inductor current emulator is configured to adjust at least one parameter for changing a current peak value of the inductor element in response to a change in a level of the input voltage and is configured to generate an internal voltage based on the at least one parameter, which is adjusted. The inductor current emulator is configured to generate a control signal for controlling the switching operation such that current of the inductor element has a pattern corresponding to a pattern of the internal voltage.
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