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公开(公告)号：US20190207519A1
公开(公告)日：2019-07-04
申请号：US15859031
申请日：2017-12-29
发明人： Sombuddha Chakraborty , Jeffery Lee Nilles , Mervin John , Farzad Sahandiesfanjani , Yogesh Kumar Ramadass
CPC分类号： H02M3/1588 , H02M1/088 , H02M1/32 , H02M1/36 , H02M3/158 , H02M2001/0022 , H02M2001/0048 , H02M2001/0054
摘要： In described examples, a DC-DC converter provides electrical power. In response to an input voltage falling below a high voltage operation threshold, the converter repeatedly performs a first normal (N) phase and a second N phase. The first N phase includes delivering power through an inductor from the input voltage. The second N phase includes coupling an input terminal of the inductor to a ground. In response to the input voltage rising above a normal operation threshold, the converter performs a first high voltage (HV) phase, then a second HV phase, then a third HV phase, then the second HV phase, and then repeats from the first HV phase. The first HV phase includes delivering power through the inductor from the input voltage and charging a flying capacitor. The second HV phase includes coupling the input terminal of the inductor to the ground. The third HV phase includes delivering power through the inductor by discharging the flying capacitor through the inductor.
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公开(公告)号：US11368089B2
公开(公告)日：2022-06-21
申请号：US16840087
申请日：2020-04-03
摘要： Described systems, methods, and circuitries use an interleaved multi-level converter to convert an input signal received at an input node into an output signal at an output node. In one example, a power conversion system includes a first multi-level switching circuit, a second multi-level switching circuit, and a control circuit. The first multi-level switching circuit and the second multi-level switching circuit are coupled to a switching node, the input node, and a reference node. The control circuit is configured to generate, based on the output signal, switching control signals as pulse width modulated signals having a duty cycle to control the output signal and provide the switching control signals to the first multi-level switching circuit and the second multi-level switching circuit.
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公开(公告)号：US20210375540A1
公开(公告)日：2021-12-02
申请号：US17240656
申请日：2021-04-26
发明人： Yuki Sato , Kenji Otake , Zhemin Zhang , Byron Lovell Williams , Dongbin Hou , Sombuddha Chakraborty
摘要： A laminate embedded core and coil structure comprises a magnetic core embedded in a laminate structure that includes two types of laminates. A first laminate embeds the coils of the structure and a second laminate fills space between the magnetic core and the first laminate, as well as space below the magnetic core and lower surface of the first laminate. The first and second laminates form a laminate structure that protects and improves isolation of the magnetic components. Solder resist encloses the laminate structure, magnetic core and coils. The laminate embedded core and coil structure may be assembled on a transformer leadframe of various types using non-conductive paste.
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公开(公告)号：US10601304B2
公开(公告)日：2020-03-24
申请号：US15858931
申请日：2017-12-29
发明人： Timothy McRae , Aleksandar Prodic , Sombuddha Chakraborty , Alvaro Aguilar , William James McIntyre
摘要： In methods, apparatus, systems, and articles of manufacture to a high efficient hybrid power converter, an example apparatus includes: a switched capacitor (SC) converter to generate a first voltage based on a voltage source; and a direct current-to-direct current (DC-DC) converter to generate a second voltage based on the voltage source of the apparatus, the difference between the first voltage and the second voltage corresponding to an output voltage.
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5.发明授权公开(公告)号：US09780661B2
公开(公告)日：2017-10-03
申请号：US14926555
申请日：2015-10-29
CPC分类号： H02M3/158 , H02M1/08 , H02M3/06 , H02M3/156 , H02M3/1588 , H02M2001/0009 , H02M2003/072 , H02M2003/1566
摘要： Switch mode power supplies and integrated circuits are presented to provide a DC output voltage signal using high and low side switches, with a switching control circuit to turn off the high side switch and engage an active shunt circuit to provide a reduced voltage to continue converter operation to accommodate high input voltage transients when the DC input voltage exceeds a threshold voltage without requiring an oversized low side switch for improved efficiency through reduced switching and conduction losses in normal operation.
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公开(公告)号：US20210375537A1
公开(公告)日：2021-12-02
申请号：US17405017
申请日：2021-08-17
发明人： Dongbin Hou , Sombuddha Chakraborty , Kenji Kawano , Jeffrey Morroni , Yuki Sato
摘要： A device includes a first inductor and a second inductor reversely coupled with the first inductor. The first and second inductors have overlapping windings. The device also includes a housing for the first and second inductor. The housing is filled with a magnetic molding compound.
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公开(公告)号：US10581312B2
公开(公告)日：2020-03-03
申请号：US15859039
申请日：2017-12-29
摘要： In described examples, a system regulates provision of DC-DC electrical power. The system includes a DC-DC converter, an input voltage node to receive an input voltage, a current source, a voltage source node, and a ground switch. The DC-DC converter includes a flying capacitor and multiple converter switches. The current source is coupled between the input voltage node and a top plate of the flying capacitor, to provide current to the top plate when the current source is activated by an activation voltage. The voltage source node is coupled to the input voltage node and to the current source, to provide the activation voltage to the current source, such that the activation voltage is not higher than a selected voltage between: a breakdown voltage of the converter switches; and a maximum value of the input voltage minus the breakdown voltage. The ground switch is coupled between a bottom plate of the flying capacitor and a ground.
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公开(公告)号：US20190207505A1
公开(公告)日：2019-07-04
申请号：US15859039
申请日：2017-12-29
摘要： In described examples, a system regulates provision of DC-DC electrical power. The system includes a DC-DC converter, an input voltage node to receive an input voltage, a current source, a voltage source node, and a ground switch. The DC-DC converter includes a flying capacitor and multiple converter switches. The current source is coupled between the input voltage node and a top plate of the flying capacitor, to provide current to the top plate when the current source is activated by an activation voltage. The voltage source node is coupled to the input voltage node and to the current source, to provide the activation voltage to the current source, such that the activation voltage is not higher than a selected voltage between: a breakdown voltage of the converter switches; and a maximum value of the input voltage minus the breakdown voltage. The ground switch is coupled between a bottom plate of the flying capacitor and a ground.
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公开(公告)号：US09680375B2
公开(公告)日：2017-06-13
申请号：US14631388
申请日：2015-02-25
发明人： Theodore Ernest Yu , Ali Motamedi , Dingkun Du , Sombuddha Chakraborty , Patrick Teterud , Keith Thomas Sanders, Jr.
CPC分类号： H02M3/156 , H02M1/44 , H02M2001/0012
摘要： In described examples, a switching mode power supply includes an output filter, a driver, a pulse width modulator, and pulse adaptation circuitry. The output filter is configured to provide output of the switching mode power supply. The driver is coupled to the output filter and is configured to switch current to the output filter. The pulse width modulator is configured to generate pulses that control switching of current by the driver. The pulse width modulator includes spread spectrum logic configured to randomize timing of the pulses generated by the pulse width modulator. The pulse adaptation circuitry is configured to identify an instantaneous excursion of the output of the switching mode power supply beyond a predetermined threshold, and to modify the randomized timing of the pulses produced by the pulse width modulator based on the identified instantaneous excursion.
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10.发明申请公开(公告)号：US20170126120A1
公开(公告)日：2017-05-04
申请号：US14926555
申请日：2015-10-29
CPC分类号： H02M3/158 , H02M1/08 , H02M3/06 , H02M3/156 , H02M3/1588 , H02M2001/0009 , H02M2003/072 , H02M2003/1566
摘要： Switch mode power supplies and integrated circuits are presented to provide a DC output voltage signal using high and low side switches, with a switching control circuit to turn off the high side switch and engage an active shunt circuit to provide a reduced voltage to continue converter operation to accommodate high input voltage transients when the DC input voltage exceeds a threshold voltage without requiring an oversized low side switch for improved efficiency through reduced switching and conduction losses in normal operation.
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