Patents by Inventor YUS KO
YUS KO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230221364Abstract: A device includes a function circuit that operates based on power provided by a first positive supply voltage and a first negative supply voltage, a monitoring circuit that operates based on power provided by a second positive supply voltage and a second negative supply voltage and that generates a first monitor signal based on monitoring an operation of the function circuit, and an output circuit that generates a second monitor signal based on monitoring the first positive supply voltage, generates a third monitor signal based on monitoring the second positive supply voltage, and generates an output signal that is output through one or more output pins, based on the first monitor signal, the second monitor signal, and the third monitor signal.Type: ApplicationFiled: January 9, 2023Publication date: July 13, 2023Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyunseok NAM, Yus Ko, Sangho Kim, Jaehyuk Yang
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Patent number: 11183945Abstract: Provided are a semiconductor device and a method of operating the same. A semiconductor device may include a comparator which compares a first voltage with a rectified voltage and provides a second voltage in accordance with the comparison. A timer circuit may operate a timer according to the second voltage and output a third voltage in correspondence with an operation time of the timer. A driver may drive a transistor with a fourth voltage generated by the driver according to the third voltage. A calibration circuit may generate a timer calibration signal based on the second voltage and the fourth voltage. The timer calibration signal may be provided to the timer circuit and used to calibrate the operation time of the timer. More efficient rectification, with reduced occurrence of reverse current, may thereby be realized.Type: GrantFiled: April 13, 2020Date of Patent: November 23, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Takahiro Nomiyama, Sung Woo Moon, Yus Ko
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Patent number: 10965214Abstract: An electronic device includes a power management integrated circuit (PMIC) including a plurality of regulators. Each of the plurality of regulators has a current meter configured to measure a respective load current. A load device is configured to receive real-time load current information from the PMIC and to perform a performance improvement operation based on the real-time load current information.Type: GrantFiled: January 9, 2019Date of Patent: March 30, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Minho Choi, Yus Ko, Dongjin Keum, Hwa Yeal Yu, Younghoon Lee
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Publication number: 20200244180Abstract: Provided are a semiconductor device and a method of operating the same. A semiconductor device may include a comparator which compares a first voltage with a rectified voltage and provides a second voltage in accordance with the comparison. A timer circuit may operate a timer according to the second voltage and output a third voltage in correspondence with an operation time of the timer. A driver may drive a transistor with a fourth voltage generated by the driver according to the third voltage. A calibration circuit may generate a timer calibration signal based on the second voltage and the fourth voltage. The timer calibration signal may be provided to the timer circuit and used to calibrate the operation time of the timer. More efficient rectification, with reduced occurrence of reverse current, may thereby be realized.Type: ApplicationFiled: April 13, 2020Publication date: July 30, 2020Inventors: TAKAHIRO NOMIYAMA, Sung Woo Moon, Yus Ko
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Patent number: 10622910Abstract: Provided are a semiconductor device and a method of operating the same. A semiconductor device may include a comparator which compares a first voltage with a rectified voltage and provides a second voltage in accordance with the comparison. A timer circuit may operate a timer according to the second voltage and output a third voltage in correspondence with an operation time of the timer. A driver may drive a transistor with a fourth voltage generated by the driver according to the third voltage. A calibration circuit may generate a timer calibration signal based on the second voltage and the fourth voltage. The timer calibration signal may be provided to the timer circuit and used to calibrate the operation time of the timer. More efficient rectification, with reduced occurrence of reverse current, may thereby be realized.Type: GrantFiled: November 3, 2017Date of Patent: April 14, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Takahiro Nomiyama, Sung Woo Moon, Yus Ko
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Publication number: 20190149045Abstract: An electronic device includes a power management integrated circuit (PMIC) including a plurality of regulators. Each of the plurality of regulators has a current meter configured to measure a respective load current. A load device is configured to receive real-time load current information from the PMIC and to perform a performance improvement operation based on the real-time load current information.Type: ApplicationFiled: January 9, 2019Publication date: May 16, 2019Applicant: Samsung Electronics Co., Ltd.Inventors: Minho Choi, Yus Ko, Dongjin Keum, Hwa Yeal Yu, Younghoon Lee
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Patent number: 10211729Abstract: A control circuit in a switching regulator, the switching regulator including an inductor and a switching circuit configured to control a current passing through the inductor in response to a control signal, the control circuit configured to receive a feedback voltage of an output voltage of the switching regulator and receive the current passing through the inductor as a current sensing signal. The control circuit includes a first internal signal generator configured to generate a first internal signal based on the feedback voltage and a reference voltage, a second internal signal generator configured to generate a second internal signal based on the current sensing signal such that a base level of the second internal signal varies according to the feedback voltage and the reference voltage, and a comparator configured to output the control signal based on the first and second internal signals.Type: GrantFiled: March 27, 2017Date of Patent: February 19, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Quoc hoang Duong, Yus Ko, Pan-jong Kim, Hyun-seok Shin, Jeong-woon Kong
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Patent number: 10205388Abstract: An electronic device includes a power management integrated circuit (PMIC) including a plurality of regulators. Each of the plurality of regulators has a current meter configured to measure a respective load current. A load device is configured to receive real-time load current information from the PMIC and to perform a performance improvement operation based on the real-time load current information.Type: GrantFiled: October 1, 2015Date of Patent: February 12, 2019Assignee: Samsung Electronics Co., Ltd.Inventors: Minho Choi, Yus Ko, Dongjin Keum, Hwa Yeal Yu, Younghoon Lee
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Patent number: 10075071Abstract: An electronic device includes a load device and a power management integrated circuit. The power management integrated circuit is configured to calculate a load power value and provide the load power value to the load device in response to a request from the load device. The power management integrated circuit includes a plurality of regulators and a controller. Each of the plurality of regulators includes a current meter for measuring a load current value to be provided to the load device, and the controller is configured to calculate the load power value by using the load current value measured by the current meter and a load voltage value provided from each of the plurality of regulators to the load device.Type: GrantFiled: July 18, 2017Date of Patent: September 11, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young Min Park, Young Hoon Lee, Yus Ko, Hwa Yeal Yu, Min Ho Choi
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Publication number: 20180205324Abstract: Provided are a semiconductor device and a method of operating the same. A semiconductor device may include a comparator which compares a first voltage with a rectified voltage and provides a second voltage in accordance with the comparison. A timer circuit may operate a timer according to the second voltage and output a third voltage in correspondence with an operation time of the timer. A driver may drive a transistor with a fourth voltage generated by the driver according to the third voltage. A calibration circuit may generate a timer calibration signal based on the second voltage and the fourth voltage. The timer calibration signal may be provided to the timer circuit and used to calibrate the operation time of the timer. More efficient rectification, with reduced occurrence of reverse current, may thereby be realized.Type: ApplicationFiled: November 3, 2017Publication date: July 19, 2018Inventors: TAKAHIRO NOMIYAMA, SUNG WOO MOON, YUS KO
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Patent number: 10008996Abstract: The inventive concepts relate to variable gain amplifiers. The variable gain amplifier including an amplifier, a first fixed resistor and a first variable resistor, a second fixed resistor and a second variable resistor, a third fixed resistor and a third variable resistor, a fourth fixed resistor and a fourth variable resistor, a first output terminal and a second output terminal, and a decoder may be provided. The decoder is configured to receive first control bits, generate second control bits from the first control bits, generate third and fourth control bits from the first or second control bits, respectively, transmit the first control bits and the third control bits to the third and fourth variable resistors to adjust resistance values, and transmit the second and fourth control bits to first and second variable resistors to adjust resistance values.Type: GrantFiled: May 23, 2017Date of Patent: June 26, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Quochoang Duong, Yus Ko, Jeongwoon Kong, Hyunseok Shin
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Patent number: 9973017Abstract: A charger circuit includes a first path regulator, a path switch, and a second path regulator. The first path regulator is configured to generate a first regulation current based on an input voltage and an input current. The path switch is configured to pass or block a first charging current in response to a control signal. The first charging current is generated based on the first regulation current. The second path regulator is configured to generate a second regulation current based on the input voltage and the input current. At least one of the first charging current and a second charging current is used to charge a battery. The second charging current is generated based on the second regulation current. The second charging current is transferred to the battery without passing through the path switch.Type: GrantFiled: September 16, 2015Date of Patent: May 15, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ryotaro Kudo, Dongjin Keum, Yus Ko, Hyunseok Nam, Gwang-Yol Noh, Whanseok Seo, Jaeyoup Choi
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Publication number: 20180069520Abstract: The inventive concepts relate to variable gain amplifiers. The variable gain amplifier including an amplifier, a first fixed resistor and a first variable resistor, a second fixed resistor and a second variable resistor, a third fixed resistor and a third variable resistor, a fourth fixed resistor and a fourth variable resistor, a first output terminal and a second output terminal, and a decoder may be provided. The decoder is configured to receive first control bits, generate second control bits from the first control bits, generate third and fourth control bits from the first or second control bits, respectively, transmit the first control bits and the third control bits to the third and fourth variable resistors to adjust resistance values, and transmit the second and fourth control bits to first and second variable resistors to adjust resistance values.Type: ApplicationFiled: May 23, 2017Publication date: March 8, 2018Applicant: Samsung Electronics Co., Ltd.Inventors: Quochoang DUONG, Yus KO, Jeongwoon KONG, Hyunseok SHIN
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Publication number: 20180062509Abstract: A control circuit in a switching regulator, the switching regulator including an inductor and a switching circuit configured to control a current passing through the inductor in response to a control signal, the control circuit configured to receive a feedback voltage of an output voltage of the switching regulator and receive the current passing through the inductor as a current sensing signal. The control circuit includes a first internal signal generator configured to generate a first internal signal based on the feedback voltage and a reference voltage, a second internal signal generator configured to generate a second internal signal based on the current sensing signal such that a base level of the second internal signal varies according to the feedback voltage and the reference voltage, and a comparator configured to output the control signal based on the first and second internal signals.Type: ApplicationFiled: March 27, 2017Publication date: March 1, 2018Applicant: Samsung Electronics Co., Ltd.Inventors: Quoc hoang DUONG, Yus KO, Pan-jong KIM, Hyun-seok SHIN, Jeong-woon KONG
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Publication number: 20180048230Abstract: An electronic device includes a load device and a power management integrated circuit. The power management integrated circuit is configured to calculate a load power value and provide the load power value to the load device in response to a request from the load device. The power management integrated circuit includes a plurality of regulators and a controller. Each of the plurality of regulators includes a current meter for measuring a load current value to be provided to the load device, and the controller is configured to calculate the load power value by using the load current value measured by the current meter and a load voltage value provided from each of the plurality of regulators to the load device.Type: ApplicationFiled: July 18, 2017Publication date: February 15, 2018Inventors: YOUNG MIN PARK, YOUNG HOON LEE, YUS KO, HWA YEAL YU, MIN HO CHOI
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Patent number: 9859796Abstract: A method of operating a buck-boost converter including an inductor and a capacitor includes; operating the buck-boost converter in boost mode until a level of an input voltage applied at an input node of the buck-boost converter reaches a desired level of an output voltage apparent at an output node of the buck-boost converter, and after the level of an input voltage reaches the desired level of the output voltage, operating the buck-boost converter in buck mode, wherein operating the buck-boost converter in buck mode and operating the buck-boost converter in boost mode overlap at least in part temporally proximate a point at which the level of the input voltage exceeds the level of the output voltage.Type: GrantFiled: April 16, 2015Date of Patent: January 2, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Gil-Won Yoon, Dong-Jin Keum, Yus Ko, Gwang-Yol Noh, Sung-Woo Moon, Min-Ho Choi
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Patent number: 9793811Abstract: A voltage converter includes first and second charging elements, first and second switches, and first and second switch controllers. The first switch controller adjusts a first activation timing of a first control signal in response to a pulse width modulation signal, a switch signal, and a first control signal. The first control signal is a signal for controlling the first switch. The second switch controller adjusts a second activation timing of a second control signal in response to the pulse width modulation signal, the first control signal, and a second control signal. The second control signal is a signal for controlling the second switch.Type: GrantFiled: June 10, 2015Date of Patent: October 17, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Gwang-Yol Noh, Yus Ko, Dongjin Keum, Hwayeal Yu
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Patent number: 9595866Abstract: A switching regulator includes a power converting unit and a switch driving unit. The power converting unit is configured to generate a direct current (DC) output voltage based on a switch driving signal and a DC input voltage. The switch driving unit is configured to generate a ripple voltage having information of an inductor current flowing through the power converting unit, add the ripple voltage to a reference voltage to generate a first voltage having a ripple, generate a feedback voltage based on the DC output voltage, compare the first voltage with the feedback voltage in a hysteresis mode to generate a comparison output, and generate the switch driving signal based on the comparison output.Type: GrantFiled: August 29, 2014Date of Patent: March 14, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Ho Choi, Dong-Jin Keum, Gil-Won Yoon, Yus Ko
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Patent number: 9590505Abstract: A switching regulator includes a DC-DC converter and a dynamic voltage positioning circuit. The DC-DC converter includes an inductor connected between an input port and an output port. The dynamic voltage positioning circuit includes a sensing circuit and a mirroring circuit. The sensing circuit is configured to sense an inductor current flowing through the inductor, and to convert a voltage applied to a direct current resistance (DCR) of the inductor into a droop current using a variable resistor. The mirroring circuit is configured to cause a voltage drop at the output port of the DC-DC converter based on a current corresponding to a difference between a bias current and the droop current.Type: GrantFiled: November 17, 2014Date of Patent: March 7, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Woo Moon, Hyun-Wook Yoo, Yus Ko, Dong-Jin Keum, Pyung-Woo Yeon
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Publication number: 20160111958Abstract: An electronic device includes a power management integrated circuit (PMIC) including a plurality of regulators. Each of the plurality of regulators has a current meter configured to measure a respective load current. A load device is configured to receive real-time load current information from the PMIC and to perform a performance improvement operation based on the real-time load current information.Type: ApplicationFiled: October 1, 2015Publication date: April 21, 2016Inventors: Minho CHOI, Yus KO, Dongjin KEUM, Hwa Yeal YU, Younghoon LEE