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公开(公告)号：US11362587B2
公开(公告)日：2022-06-14
申请号：US15858640
申请日：2017-12-29
发明人： Orlando Lazaro , Kevin Scoones , Alvaro Aguilar , Jeffrey Anthony Morroni , Sombuddha Chakraborty
摘要： In described examples of methods and control circuitry to control a multi-level power conversion system, the control circuitry generates PWM signals having a duty cycle to control an output signal. The duty cycle is adjustable in different switching cycles. States of the system's switches are adjustable in one or more intervals within the switching cycles. In response to a voltage across a capacitor of the system being outside a non-zero voltage range, the control circuitry adjusts states of the switches in two intervals to discharge or charge the capacitor in a given switching cycle.
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公开(公告)号：US11101735B2
公开(公告)日：2021-08-24
申请号：US16584610
申请日：2019-09-26
发明人： Kevin Scoones , Orlando Lazaro , Alvaro Aguilar , Jeffrey Anthony Morroni , Reza Sharifi , Saurav Bandyopadhyay
摘要： In a described example, an apparatus includes a first switch coupled between a terminal for receiving an input voltage and a top plate node, and having a first control terminal; a second switch coupled between the top plate node and a switching node, and having a second control terminal; a third switch coupled between the switching node and a bottom plate node and having a third control terminal; a fourth switch coupled between the bottom plate node and a ground terminal, and having a fourth control terminal; a flying capacitor coupled between the top plate node and the bottom plate node; a fifth switch coupled between the top plate node and an auxiliary node; a sixth switch coupled between the auxiliary node and the bottom plate node; and an auxiliary capacitor coupled between the auxiliary control terminal and a ground terminal.
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公开(公告)号：US10374510B2
公开(公告)日：2019-08-06
申请号：US15715975
申请日：2017-09-26
摘要： An active electromagnetic interference (EMI) filter includes an amplifier configured to sense noise signals on a power conductor, and drive a cancellation signal onto the power conductor. The cancellation signal is to reduce the amplitude of the noise signals. Some embodiments of the active EMI filter include a high frequency compensation network that improves the high frequency phase margin of the active EMI filter and improves the stability of the active EMI filter at high frequencies. Some embodiments of the active EMI filter include a low frequency compensation capacitor that increases the phase margin of the active EMI filter at low frequencies. Some embodiments of the active EMI filter include low frequency compensation circuitry that increases the low frequency tolerance of the active EMI filter.
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公开(公告)号：US20190058405A1
公开(公告)日：2019-02-21
申请号：US15858648
申请日：2017-12-29
CPC分类号： H02M3/33569 , G05F1/575 , H02M1/08 , H02M3/06 , H02M3/158 , H02M2001/0003 , H02M2001/0009 , H03K7/08
摘要： In described examples of methods and control circuitry to control a multi-level power conversion system with a flying capacitor, a power circuit regulates a regulator input voltage signal to provide a supply voltage signal to the control circuitry. A power switching circuit couples the regulator input to a first terminal of the flying capacitor in response to a second terminal of the flying capacitor being coupled to a reference voltage node in a given switching cycle, and couples the regulator input to the second terminal in response to the first terminal being coupled to an input node of the power conversion system in the given switching cycle.
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公开(公告)号：US20190058385A1
公开(公告)日：2019-02-21
申请号：US15858640
申请日：2017-12-29
发明人： Orlando Lazaro , Kevin Scoones , Alvaro Aguilar , Jeffrey Anthony Morroni , Sombuddha Chakraborty
摘要： In described examples of methods and control circuitry to control a multi-level power conversion system, the control circuitry generates PWM signals having a duty cycle to control an output signal. The duty cycle is adjustable in different switching cycles. States of the system's switches are adjustable in one or more intervals within the switching cycles. In response to a voltage across a capacitor of the system being outside a non-zero voltage range, the control circuitry adjusts states of the switches in two intervals to discharge or charge the capacitor in a given switching cycle.
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公开(公告)号：US20180150092A1
公开(公告)日：2018-05-31
申请号：US15882670
申请日：2018-01-29
摘要： A power combining technique includes receiving a first voltage at a first input and a second voltage at a second input. The power combining technique further includes combining, with at least two power converters, power received from the first and second inputs into a single power rail. A power balancing technique further includes controlling the at least two power converters such that a first one of the power converters outputs an amount of current to the single power rail that is proportional to and/or equal to the amount of current output by another of the power converters.
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公开(公告)号：US20200293073A1
公开(公告)日：2020-09-17
申请号：US16889892
申请日：2020-06-02
摘要： A power combining technique includes receiving a first voltage at a first input and a second voltage at a second input. The power combining technique further includes combining, with at least two power converters, power received from the first and second inputs into a single power rail. A power balancing technique further includes controlling the at least two power converters such that a first one of the power converters outputs an amount of current to the single power rail that is proportional to and/or equal to the amount of current output by another of the power converters.
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8.发明申请公开(公告)号：US20200067410A1
公开(公告)日：2020-02-27
申请号：US16670638
申请日：2019-10-31
摘要： Timing circuitry causes: a first closed signal on a first switch control output before a signal on a second switch control output changes from a second closed signal to a first open signal; the first switch control output to provide a second open signal after a first selected time after the second switch control output changes from the second closed signal to the first open signal; and a third switch control output to provide a third closed signal a second selected time after the first switch control output changes from the first closed signal to a third open signal. A beginning of the first closed signal to a beginning of the first open signal is based on a later of: a current through a switch connected to the second switch control output exceeding a threshold current; and a clocked time after the beginning of the first closed signal.
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公开(公告)号：US10468988B2
公开(公告)日：2019-11-05
申请号：US16058859
申请日：2018-08-08
发明人： Kevin Scoones , Orlando Lazaro , Alvaro Aguilar , Jeffrey Anthony Morroni , Reza Sharifi , Saurav Bandyopadhyay
摘要： In a described example, an apparatus includes a first switch coupled between a terminal for receiving an input voltage and a top plate node, and having a first control terminal; a second switch coupled between the top plate node and a switching node, and having a second control terminal; a third switch coupled between the switching node and a bottom plate node and having a third control terminal; a fourth switch coupled between the bottom plate node and a ground terminal, and having a fourth control terminal; a flying capacitor coupled between the top plate node and the bottom plate node; a fifth switch coupled between the top plate node and an auxiliary node; a sixth switch coupled between the auxiliary node and the bottom plate node; and an auxiliary capacitor coupled between the auxiliary control terminal and a ground terminal.
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10.发明授权公开(公告)号：US10355609B2
公开(公告)日：2019-07-16
申请号：US15858648
申请日：2017-12-29
摘要： In described examples of methods and control circuitry to control a multi-level power conversion system with a flying capacitor, a power circuit regulates a regulator input voltage signal to provide a supply voltage signal to the control circuitry. A power switching circuit couples the regulator input to a first terminal of the flying capacitor in response to a second terminal of the flying capacitor being coupled to a reference voltage node in a given switching cycle, and couples the regulator input to the second terminal in response to the first terminal being coupled to an input node of the power conversion system in the given switching cycle.
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