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公开(公告)号：US10693379B2
公开(公告)日：2020-06-23
申请号：US15668980
申请日：2017-08-04
发明人： Sangcheol Moon , Jintae Kim , Hangseok Choi
摘要： According to an implementation, a resonant converter for short-circuit protection includes an oscillator, a short-circuit detector configured to detect a short-circuit condition in a component of the resonant converter, and a pulse width modulation (PWM) controller configured to control the oscillator in a PWM mode before short-circuit protection is triggered. The oscillator, when in the PWM mode, is configured to generate a first clock signal for driving a first power switch and a second clock signal for driving a second power switch.
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公开(公告)号：US10483237B2
公开(公告)日：2019-11-19
申请号：US15793018
申请日：2017-10-25
发明人： Mankyo Jong , Changyoung Park
IPC分类号： H01L25/065 , H01L23/498 , H01L25/00 , H01L23/373 , H01L25/11 , H01L23/473 , H01L23/00
摘要： In a general aspect, a circuit assembly apparatus can include first and second semiconductor die, and a substrate. The substrate can include an insulating layer; a first metal layer disposed on a first side of the insulating layer, a first side of the first semiconductor die disposed on and electrically coupled with the first metal layer; a second metal layer disposed on a second side of the insulating layer, the second side of the insulating layer being opposite the first side of the insulating layer, a first side of the second semiconductor die being disposed on and electrically coupled with the second metal layer; and a conductive via disposed through the insulating layer, the conductive via electrically coupling the first metal layer with the second metal layer, the first metal layer, the conductive via and the second metal layer electrically coupling the first semiconductor die with the second semiconductor die.
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公开(公告)号：US10374516B2
公开(公告)日：2019-08-06
申请号：US15668974
申请日：2017-08-04
发明人： Sangcheol Moon , Jintae Kim , Hangseok Choi
摘要： According to an implementation, a resonant converter for detecting non-zero voltage switching includes an oscillator configured to generate a first clock signal to drive a first power switch, and a second clock signal to drive a second power switch. The resonant converter includes a non-zero voltage switching (non-ZVS) detection circuit configured to receive an integrated current sense signal sensed on a primary side of a transformer of a resonant network, and determine a polarity of a voltage of the integrated current sense signal at a predetermined point in the first clock signal or the second clock signal during a switching cycle. The non-ZVS detection circuit is configured to detect a non-ZVS event based on the polarity of the voltage of the integrated current sense signal at the predetermined point in the first clock signal or the second clock signal during the switching cycle.
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公开(公告)号：US10362643B2
公开(公告)日：2019-07-23
申请号：US15626307
申请日：2017-06-19
发明人： Young-Jong Kim , Hyun-Chul Eum
IPC分类号： H05B33/08
摘要： A light emitting diode (LED) driver circuit includes an LED string and a conducting state detection circuit. The conducting state detection circuit detects a conducting state of the LED string, and generates a discharge control signal upon sensing that the LED string is in a non-conducting state. A current source generates a discharge current according to the discharge control signal when the LED string is in the non-conducting state. A passive bleeder provides current compensation by internal regulator operation. An LED spike current suppression circuit suppresses spike current that can occur when the input voltage increases above a threshold. A bias supply circuit has an input capacitor that provides a bias voltage.
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公开(公告)号：US10164528B2
公开(公告)日：2018-12-25
申请号：US15196678
申请日：2016-06-29
发明人： SangCheol Moon , Gwanbon Koo , Chenghao Jin , Bonggeun Chung
IPC分类号： H02M1/08 , H02M3/158 , H02M3/156 , H02M7/04 , G01R19/04 , H02M1/36 , H02M1/44 , H02M1/00 , H02M7/217
摘要： A buck converter includes a power switch having one end to which an input voltage is transferred, a synchronous switch connected between the other end of the power switch and the ground, an inductor having an end connected to the other end of the power switch, and a switch control circuit configured to calculate a zero voltage delay time based on at least an ON time of the power switch and a delay time. The delay time is determined based on the inductor and parasitic capacitors of the power switch and the synchronous switch.
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公开(公告)号：US20180138152A1
公开(公告)日：2018-05-17
申请号：US15793018
申请日：2017-10-25
发明人： Mankyo JONG , Changyoung PARK
IPC分类号： H01L25/065 , H01L23/498 , H01L23/00 , H01L25/00
摘要： In a general aspect, a circuit assembly apparatus can include first and second semiconductor die, and a substrate. The substrate can include an insulating layer; a first metal layer disposed on a first side of the insulating layer, a first side of the first semiconductor die disposed on and electrically coupled with the first metal layer; a second metal layer disposed on a second side of the insulating layer, the second side of the insulating layer being opposite the first side of the insulating layer, a first side of the second semiconductor die being disposed on and electrically coupled with the second metal layer; and a conductive via disposed through the insulating layer, the conductive via electrically coupling the first metal layer with the second metal layer, the first metal layer, the conductive via and the second metal layer electrically coupling the first semiconductor die with the second semiconductor die.
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公开(公告)号：US09947742B2
公开(公告)日：2018-04-17
申请号：US15337748
申请日：2016-10-28
发明人： Hye-mi Kim , Sun-hak Lee
CPC分类号： H01L29/0642 , H01L27/0629 , H01L29/402 , H01L29/66136 , H01L29/861
摘要： A power semiconductor device includes: a substrate; an anode electrode and a cathode electrode disposed on the substrate; a well region disposed inside the substrate in a lower portion of the anode electrode, and having p-type conductivity; an NISO region disposed in a lower portion of the well region inside the substrate, and having a first n-type impurity concentration; and an n-type buried layer disposed in a lower portion of the NISO region, and having a second impurity concentration greater than the first n-type impurity concentration, inside the substrate.
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公开(公告)号：US09917503B2
公开(公告)日：2018-03-13
申请号：US15154094
申请日：2016-05-13
发明人： Taesung Kim , Gwanbon Koo
CPC分类号： H02M1/32 , H02M1/4258 , H02M3/33523 , Y02B70/126 , Y02P80/112
摘要： A power factor correction circuit includes an overcurrent protection circuit, and the overcurrent protection circuit detects at least one of a line input voltage, a switch current of a power factor correction circuit, and a line period peak and performs overcurrent protection operations using a detection result.
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公开(公告)号：US20180054130A1
公开(公告)日：2018-02-22
申请号：US15668980
申请日：2017-08-04
发明人： Sangcheol MOON , Jintae KIM , Hangseok CHOI
摘要： According to an implementation, a resonant converter for short-circuit protection includes an oscillator, a short-circuit detector configured to detect a short-circuit condition in a component of the resonant converter, and a pulse width modulation (PWM) controller configured to control the oscillator in a PWM mode before short-circuit protection is triggered. The oscillator, when in the PWM mode, is configured to generate a first clock signal for driving a first power switch and a second clock signal for driving a second power switch.
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公开(公告)号：US09900948B2
公开(公告)日：2018-02-20
申请号：US15380248
申请日：2016-12-15
发明人： Minwoo Lee , Moonsik Song
CPC分类号： H05B33/0845 , H05B33/0815 , H05B33/0887
摘要： A reference voltage generator disclosed herein includes an amplifier including two input terminals connected to a dimming signal and a first node, respectively, and an output terminal, a first transistor including a gate connected to the output terminal of the amplifier and one electrode connected to the first node, second and third transistors configured to form a current mirror, and two resistors connected between one electrode of the second transistor and one electrode of the first transistor.
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