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公开(公告)号：US11824451B2
公开(公告)日：2023-11-21
申请号：US17402331
申请日：2021-08-13
Applicant: Analog Devices, Inc.
Inventor： Dongwon Kwon , Min Kyu Song , Jindong Zhang , Min Chen
CPC classification number: H02M3/1586 , H02M1/0009 , H02M3/1582 , H02M3/1584
Abstract: A multi-phase buck-boost converter circuit comprises a buck circuit stage, a boost circuit stage, and a control circuit. The buck circuit stage is connected to an input of the buck-boost converter circuit to receive an input voltage. The boost circuit stage includes multiple boost circuits connected in parallel. The boost circuit stage is coupled to the buck circuit stage and an output of the multi-phase buck-boost converter circuit. Each boost circuit includes an inductor coupled to the buck circuit stage. The control circuit operates the multiple boost circuit stages out of phase with respect to each other in a boost mode, operates the buck circuit stage in a buck mode, and operates the multiple boost circuit stages out of phase with respect to each other and operates the buck circuit stage in a buck-boost mode.
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公开(公告)号：US11682972B2
公开(公告)日：2023-06-20
申请号：US17167548
申请日：2021-02-04
Applicant: Analog Devices, Inc.
Inventor： Min Kyu Song , Min Chen
CPC classification number: H02M3/1582 , G05F1/62
Abstract: Controller circuitry can employ a method to provide control signals to bridge switches operating an inductor for switched-mode inductive buck-boost voltage regulation. The buck mode can operate the bridge switches in a buck current control mode when the input voltage exceeds the output voltage. The boost mode can operate the bridge switches in a boost current control mode when the output voltage exceeds the input voltage. The buck-boost transition mode can operate the bridge switches in a peak buck-boost current control mode that minimizes a minimum duty cycle (having a minimum “on” duty time and a minimum “off” duty time) when the output voltage is approximately equal to the input voltage during a transition from at least one of the current control buck mode to the current control boost mode or from the current control boost mode to the current control buck mode.
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公开(公告)号：US20220360165A1
公开(公告)日：2022-11-10
申请号：US17308517
申请日：2021-05-05
Applicant: Analog Devices, Inc.
Inventor： Wen Chuen Liu , Xugang Ke , Min Chen , Wei Gu
Abstract: A UHV-LV interface circuit that is capable of the following, among other things: 1) starting up a primary controller of a power converter circuit with a precisely controlled startup charging profile; 2) performing pulse-based line-voltage sensing with reduced power and improved sensing accuracy; and 3) discharging a capacitor, e.g., class-X2 capacitor, with a stable supply voltage for the controller. The UHV-LV interface circuit can use a single UHV device, such as a single depletion-mode transistor, e.g., field-effect transistor (FET).
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Patent Agency Ranking
公开(公告)号：US20230155475A1
公开(公告)日：2023-05-18
申请号：US17656362
申请日：2022-03-24
Applicant: Analog Devices, Inc.
CPC classification number: H02M1/0045 , H02J7/345 , H02J7/00712 , H02M1/0009 , H02M3/158 , H02J2207/20 , H02J2207/50
Abstract: An apparatus comprising a regulator circuit that includes a linear input current regulating circuit configured to regulate input current to the regulator circuit when an output voltage of the regulator circuit is less than an input voltage of the regulator circuit; and a switching regulating circuit configured to regulate the input current when the output voltage is greater than the input voltage and less than a target regulated output voltage and regulate the output voltage when the output voltage reaches the target regulated output voltage. The linear input current regulating circuit is also used to disconnect the input from output during shutdown.
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公开(公告)号：US20230020072A1
公开(公告)日：2023-01-19
申请号：US17379750
申请日：2021-07-19
Applicant: Analog Devices, Inc.
Abstract: A zero-voltage switching (ZVS) buck-boost converter to reduce or even minimize switching power loss and improve EMI performance is described herein. The buck-boost converter may include an auxiliary path to generate an auxiliary current to charge and discharge respective nodes in the converter during select switching times. The converter may operate in buck-boost mode, buck mode, or boost mode. Moreover, the auxiliary path may include components, such as a pair of power switches and an inductor, arranged in a symmetrical fashion so that the converter may achieve ZVS in bidirectional operation as well.
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公开(公告)号：US20220247313A1
公开(公告)日：2022-08-04
申请号：US17167548
申请日：2021-02-04
Applicant: Analog Devices, Inc.
Inventor： Min Kyu Song , Min Chen
Abstract: Controller circuitry can employ a method to provide control signals to bridge switches operating an inductor for switched-mode inductive buck-boost voltage regulation. The buck mode can operate the bridge switches in a buck current control mode when the input voltage exceeds the output voltage. The boost mode can operate the bridge switches in a boost current control mode when the output voltage exceeds the input voltage. The buck-boost transition mode can operate the bridge switches in a peak buck-boost current control mode that minimizes a minimum duty cycle (having a minimum “on” duty time and a minimum “off” duty time) when the output voltage is approximately equal to the input voltage during a transition from at least one of the current control buck mode to the current control boost mode or from the current control boost mode to the current control buck mode.
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公开(公告)号：US11689097B2
公开(公告)日：2023-06-27
申请号：US17308517
申请日：2021-05-05
Applicant: Analog Devices, Inc.
Inventor： Wen Chuen Liu , Xugang Ke , Min Chen , Wei Gu
CPC classification number: H02M1/36 , H02M3/33507
Abstract: A UHV-LV interface circuit that is capable of the following, among other things: 1) starting up a primary controller of a power converter circuit with a precisely controlled startup charging profile; 2) performing pulse-based line-voltage sensing with reduced power and improved sensing accuracy; and 3) discharging a capacitor, e.g., class-X2 capacitor, with a stable supply voltage for the controller. The UHV-LV interface circuit can use a single UHV device, such as a single depletion-mode transistor, e.g., field-effect transistor (FET).
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公开(公告)号：US20230047637A1
公开(公告)日：2023-02-16
申请号：US17402331
申请日：2021-08-13
Applicant: Analog Devices, Inc.
Inventor： Dongwon Kwon , Min Kyu Song , Jindong Zhang , Min Chen
Abstract: A multi-phase buck-boost converter circuit comprises a buck circuit stage, a boost circuit stage, and a control circuit. The buck circuit stage is connected to an input of the buck-boost converter circuit to receive an input voltage. The boost circuit stage includes multiple boost circuits connected in parallel. The boost circuit stage is coupled to the buck circuit stage and an output of the multi-phase buck-boost converter circuit. Each boost circuit includes an inductor coupled to the buck circuit stage. The control circuit operates the multiple boost circuit stages out of phase with respect to each other in a boost mode, operates the buck circuit stage in a buck mode, and operates the multiple boost circuit stages out of phase with respect to each other and operates the buck circuit stage in a buck-boost mode.
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