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公开(公告)号：US10594214B2
公开(公告)日：2020-03-17
申请号：US15411838
申请日：2017-01-20
Applicant: Samsung Display Co., Ltd.
Inventor： Sung-Chun Park
IPC: H02M3/158 , G09G3/3266 , G09G3/3275
Abstract: A DC-DC converter includes: a first switch; a second switch connected to the first switch; a mode selecting circuit to select a converting mode from one of at least a first mode and a second mode based on an input voltage; and a controller to generate a first switching control signal for controlling the first switch based on the converting mode, and a second switching control signal for controlling the second switch based on the converting mode.
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公开(公告)号：US10560021B2
公开(公告)日：2020-02-11
申请号：US15411838
申请日：2017-01-20
Applicant: Samsung Display Co., Ltd.
Inventor： Sung-Chun Park
IPC: H02M3/158 , G09G3/3266 , G09G3/3275
Abstract: A DC-DC converter includes: a first switch; a second switch connected to the first switch; a mode selecting circuit to select a converting mode from one of at least a first mode and a second mode based on an input voltage; and a controller to generate a first switching control signal for controlling the first switch based on the converting mode, and a second switching control signal for controlling the second switch based on the converting mode.
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公开(公告)号：US20170250605A1
公开(公告)日：2017-08-31
申请号：US15411838
申请日：2017-01-20
Applicant: Samsung Display Co., Ltd.
Inventor： Sung-Chun Park
IPC: H02M3/158 , G09G3/3275 , G09G3/3266
Abstract: A DC-DC converter includes: a first switch; a second switch connected to the first switch; a mode selecting circuit to select a converting mode from one of at least a first mode and a second mode based on an input voltage; and a controller to generate a first switching control signal for controlling the first switch based on the converting mode, and a second switching control signal for controlling the second switch based on the converting mode.
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公开(公告)号：US20240380325A1
公开(公告)日：2024-11-14
申请号：US18780434
申请日：2024-07-22
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sung-Chun Park
IPC: H02M3/158 , G09G3/3233 , G09G3/3266 , G09G3/3275 , H02M3/156
Abstract: A DC-DC converter includes: a first switch; a second switch connected to the first switch; a mode selecting circuit to select a converting mode from one of at least a first mode and a second mode based on an input voltage; and a controller to generate a first switching control signal for controlling the first switch based on the converting mode, and a second switching control signal for controlling the second switch based on the converting mode.
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5.发明授权公开(公告)号：US10325548B2
公开(公告)日：2019-06-18
申请号：US15427584
申请日：2017-02-08
Applicant: Samsung Display Co., Ltd.
Inventor： Soon-Gi Kwon , Sung-Chun Park
Abstract: A power converter may include the following elements: an input terminal for receiving an input voltage; an output terminal for providing an output voltage; a reference member for receiving a reference voltage; a first transistor electrically connected between the reference member and the input terminal; a second transistor electrically connected between the input terminal and the output terminal; a diode electrically connected in parallel with the second transistor; and a controller for selecting a first mode if the input voltage is greater than a first reference voltage level and for selecting a second mode if the input voltage has been less than a second reference voltage level for a reference time period. The first transistor and the diode may generate the output voltage in the first mode. The first transistor and the second transistor may generate the output voltage in the second mode.
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Patent Agency Ranking
公开(公告)号：US20210119541A1
公开(公告)日：2021-04-22
申请号：US17135860
申请日：2020-12-28
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sung-Chun Park
IPC: H02M3/158 , G09G3/3233 , G09G3/3266 , G09G3/3275 , H02M3/156
Abstract: A DC-DC converter includes: a first switch; a second switch connected to the first switch; a mode selecting circuit to select a converting mode from one of at least a first mode and a second mode based on an input voltage; and a controller to generate a first switching control signal for controlling the first switch based on the converting mode, and a second switching control signal for controlling the second switch based on the converting mode.
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公开(公告)号：US09985523B2
公开(公告)日：2018-05-29
申请号：US14611505
申请日：2015-02-02
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sung-Chun Park
IPC: H02M3/158 , H02M1/088 , H02M1/00 , G09G3/3208 , G09G3/20
CPC classification number: H02M3/158 , G09G3/2096 , G09G3/3208 , G09G2330/02 , H02M1/088 , H02M3/1582 , H02M3/1584 , H02M2001/0077 , H02M2003/1586
Abstract: A DC-DC converter includes first and second converters. The first converter generates a first power voltage based on a power voltage from an input terminal, and outputs the first power voltage to a first output terminal. The second converter generates a second power voltage based on the input power voltage, and outputs the second power voltage to a second output terminal. The second converter includes a plurality of inverting converters and a controller. The inverting converters generate a check current to check a connection state of an inductor when the inductor is connected. The second power voltage is generated by converting the input power voltage in response to a PWM signal. The controller generates a driving control signal based on the check current to operate a predetermined number of the inverting converters connected to the inductor, and to control the inverting converters based on the driving control signal.
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公开(公告)号：US09614441B2
公开(公告)日：2017-04-04
申请号：US14622720
申请日：2015-02-13
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sung-Chun Park
IPC: G09G3/3233 , H02M3/158 , G09G3/3258
CPC classification number: H02M3/158 , G09G3/3233 , G09G3/3258 , G09G2330/00 , G09G2330/028 , G09G2360/08 , H02M3/1588 , Y02B70/1466
Abstract: a DC-DC converter, including a conversion unit configured to convert a battery voltage input to an input terminal of the DC-DC converter into a first voltage, and to output the first voltage to an output terminal of the DC-DC converter, a feedback voltage generation unit configured to generate a feedback voltage by dividing the first voltage, an error amplifier (AMP) configured to supply, to a pulse width modulation (PWM) control circuit, an error signal indicating a voltage difference between the feedback voltage and a reference voltage, the PWM control circuit being configured to control the conversion unit, corresponding to the error signal, thereby changing the first voltage, and a reference voltage supply unit configured to supply the reference voltage to the error AMP, and to change the reference voltage.
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公开(公告)号：US09992844B2
公开(公告)日：2018-06-05
申请号：US14546161
申请日：2014-11-18
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sung-Chun Park
CPC classification number: H05B33/0896 , G09G3/3696 , G09G2330/028
Abstract: A power supply circuit has a first voltage converter and a second voltage converter. The first voltage converter generates a first power supply voltage having a first voltage level based on an input voltage. The first power supply voltage drives a first power node of a display in a first mode. The second voltage converter generates a second power supply voltage having a second voltage level based on the input voltage. The second power node is driven by the second power supply voltage in the first mode and is driven by a ground voltage in a second mode.
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公开(公告)号：US09754523B2
公开(公告)日：2017-09-05
申请号：US14698119
申请日：2015-04-28
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Yoon-Young Lee , Kwang-Hun Kang , Soon-Gi Kwon , Sung-Chun Park , Jeong-Min Seo
IPC: G09G3/20
CPC classification number: G09G3/20 , G09G2330/028
Abstract: A power supply device includes a voltage range selector, a voltage level controller, and a power supply voltage generator. The voltage range selector generates a range selection signal to select a voltage control range. The voltage level controller generates a voltage level control signal based on a driving condition of a display panel. The power supply voltage generator generates a power supply voltage having a voltage level corresponding to the voltage level control signal within the voltage control range, and supplies the power supply voltage to the display panel.
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