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公开(公告)号：US20220190720A1
公开(公告)日：2022-06-16
申请号：US17477813
申请日：2021-09-17
发明人： Jeongpyo PARK , Taehwang KONG , Junhyeok YANG , Donghoon JUNG
摘要： A DC-DC converter including a switching buck regulator including a first power switch connected to a first power node, a second power switch connected to a second power node, a driver configured to drive the first and second power switches, an output filtering inductor connected to a node between the first and second power switches, and an output filtering capacitor connected to the output filtering inductor, a controller configured to compensate for an output signal of the switching buck regulator in a time domain using a reference voltage, and a feed forward circuit connected between the switching buck regulator and the controller, and including a first buffer, a second buffer, an RC filter, and an adder may be provided. Accordingly, the DC-DC converter can reduce a delay of a compensation circuit, improve transient response characteristics of the switching buck regulator, and further improve the performance of the DC-DC converter.
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公开(公告)号：US20230034874A1
公开(公告)日：2023-02-02
申请号：US17873795
申请日：2022-07-26
发明人： Jaeseung LEE , Sungmin YOO , Taehwang KONG , Junhyeok YANG
IPC分类号： G01R23/10
摘要： 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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3.发明公开公开(公告)号：US20240072664A1
公开(公告)日：2024-02-29
申请号：US18188157
申请日：2023-03-22
发明人： Huidong GWON , Taehwang KONG , Minjae KIM , Junhyeok YANG , Yunho LEE
CPC分类号： H02M3/158 , H02M1/0032 , H02M1/36 , H02M1/0045
摘要： A power management chip includes a gate driver configured to output a first gate signal driving a first power switch and a second gate signal driving the second power switch, a multiplexer configured to receive an error detect signal from a first error amplifier and a first gate signal from the gate driver, and drive the first power switch with either of the error detect signal or the first gate signal in response to a mode select signal; an inductor detection logic configured to receive the inductor detect signal, output a comparison detect signal and a pulse signal for detecting an external inductor, and output the mode select signal corresponding to a result of the detecting, and a comparator comparing an internal output voltage of an output node and an output voltage of the feedback node in response to the comparison detect signal.
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公开(公告)号：US20240030822A1
公开(公告)日：2024-01-25
申请号：US18468893
申请日：2023-09-18
发明人： Sungmin YOO , Taehwang KONG , Sangho KIM , Junhyeok YANG , Hyungmin LEE , Yunho LEE , Woojoong JUNG
CPC分类号： H02M3/1588 , H02M3/157 , H02M1/08
摘要： 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：US20230170795A1
公开(公告)日：2023-06-01
申请号：US17993603
申请日：2022-11-23
发明人： Sungmin YOO , Minsu KIM , Hyungmin LEE , Taehwang KONG , Junhyeok YANG , Woojoong JUNG
CPC分类号： H02M3/07 , H02M1/0012 , H02M1/08 , H02M1/0054
摘要： 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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公开(公告)号：US20220131468A1
公开(公告)日：2022-04-28
申请号：US17389806
申请日：2021-07-30
发明人： Sungmin YOO , Taehwang KONG , Sangho KIM , Junhyeok YANG , Hyungmin LEE , Yunho LEE , Woojoong JUNG
摘要： 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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