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公开(公告)号：USRE50277E1
公开(公告)日：2025-01-21
申请号：US16931904
申请日：2020-07-17
Applicant: Delta Electronics, Inc.
Inventor： Haibin Song , Laszlo Huber , Daofei Xu , Alpha Zhang , Milan M. Jovanovic , Chien-Chung Chang
Abstract: A flyback power converter includes a hybrid clamp circuit and a corresponding power management unit that substantially optimizes the performance of the flyback power converter in its entire line and load ranges. The clamp circuit, which is connected in parallel to a primary winding of the flyback transformer, includes a parallel combination of a capacitor and resistor that is connected in series with a parallel combination of a switch and a diode. By sensing the operating conditions, the power management circuit configures the clamp circuit either as a passive clamp or as an active clamp. In the passive-clamp configuration, the switch is kept turned off. In the active-clamp configuration, the switch operates with pulse-width modulation (PWM) which enables ZVS turn-on of the main switch.
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公开(公告)号：US08970198B2
公开(公告)日：2015-03-03
申请号：US13855482
申请日：2013-04-02
Applicant: Delta Electronics, Inc.
Inventor： Laszlo Huber , Milan Jovanovic , Chien-Chung Chang
Abstract: A power supply having an input and an output, includes a power converter coupled between the input and output of the power supply including at least one switch that is controlled by comparing a sensed voltage, the sensed voltage corresponding to a current flowing through the switch, to a reference voltage. A controller, in response to a change detected in a switching frequency of the switch, reduces audible noise generated by the power supply by at least one of: adjusting the reference voltage; adjusting the current sense voltage; or adjusting a resistance used to generate the sensed voltage.
Abstract translation: 具有输入和输出的电源包括耦合在电源的输入和输出之间的功率转换器，其包括至少一个开关，所述至少一个开关通过比较感测的电压，对应于流过开关的电流的感测电压， 到参考电压。 控制器响应于在开关的开关频率中检测到的变化，通过以下至少一个来降低由电源产生的可听噪声：调整参考电压; 调整电流检测电压; 或调整用于产生感测电压的电阻。
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公开(公告)号：US11777413B2
公开(公告)日：2023-10-03
申请号：US17346681
申请日：2021-06-14
Applicant: DELTA ELECTRONICS, INC.
Inventor： Laszlo Huber , Tomas Sadilek , Misha Kumar , Zhiyu Shen , Jinfa Zhang , Chia-Hsiong Huang , Peter Mantovanelli Barbosa
CPC classification number: H02M3/33584 , H02M1/0095 , H02M1/08 , H03M3/39 , H02M3/1584 , H02M3/33523
Abstract: A DC/DC converter may be formed out of the combination of a first converter that is optimized to transfer energy from a voltage source to a load, and a second converter that receives a control signal derived from the load voltage to regulate the load voltage. The DC/DC converter may be configured as a sigma converter, a delta converter, or a sigma-delta converter. The mode of operation being selected according to the source voltage or the load voltage, either of which may vary over a wide range.
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公开(公告)号：US20130293206A1
公开(公告)日：2013-11-07
申请号：US13855482
申请日：2013-04-02
Applicant: Delta Electronics, Inc.
Inventor： Laszlo Huber , Milan Jovanovic , Chien-Chung Chang
IPC: H02M3/158
Abstract: A power supply having an input and an output, includes a power converter coupled between the input and output of the power supply including at least one switch that is controlled by comparing a sensed voltage, the sensed voltage corresponding to a current flowing through the switch, to a reference voltage. A controller, in response to a change detected in a switching frequency of the switch, reduces audible noise generated by the power supply by at least one of: adjusting the reference voltage; adjusting the current sense voltage; or adjusting a resistance used to generate the sensed voltage.
Abstract translation: 具有输入和输出的电源包括耦合在电源的输入和输出之间的功率转换器，其包括至少一个开关，所述至少一个开关通过比较感测的电压，对应于流过开关的电流的感测电压， 到参考电压。 控制器响应于在开关的开关频率中检测到的变化，通过以下至少一个来降低由电源产生的可听噪声：调整参考电压; 调整电流检测电压; 或调整用于产生感测电压的电阻。
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公开(公告)号：US20250167671A1
公开(公告)日：2025-05-22
申请号：US18518080
申请日：2023-11-22
Applicant: Delta Electronics, Inc.
Inventor： Laszlo Huber , Peter Mantovanelli Barbosa
Abstract: In one embodiment, a method to reduce inductor current ripple in a three-phase, flying capacitor multi-level boost power factor correction rectifier circuit having three totem-pole legs, the method including: determining, for the three-phase, flying capacitor multi-level boost power factor correction rectifier circuit, for which of at least one of a segment in a line cycle or a voltage level of a phase-to-neutral voltage, and for which totem-pole leg selected from any one of the three totem-pole legs, to apply an additional phase shift at one or more instances of time in the line cycle; and applying the additional phase shift in such a way as to center align midpoint voltages of the three totem-pole legs.
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Patent Agency Ranking
公开(公告)号：US20250125719A1
公开(公告)日：2025-04-17
申请号：US18379857
申请日：2023-10-13
Applicant: Delta Electronics, Inc.
Inventor： Laszlo Huber , Peter Mantovanelli Barbosa
Abstract: In one embodiment, a multi-level, bridgeless boost power factor correction (PFC) device, comprising: a circuit comprising an inductor, and at least a first pair and a second pair of switches and a capacitor arranged in a flying capacitor, totem-pole configuration; and a control circuit configured to drive the at least first and second pairs of switches in such a way as to reduce distortion in a line current, wherein for the first and second pairs of switches, the control circuit is configured to: for a first half line cycle, drive a first switch of each pair during an entire interval of the first half-line cycle and a second switch of each pair for less than the entire interval; and for a second half-line cycle, drive the first switch of each pair for less than an entire interval of the second half-line cycle and the second switch of each pair during an entire interval of the second half-line cycle.
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公开(公告)号：US20220149744A1
公开(公告)日：2022-05-12
申请号：US17346681
申请日：2021-06-14
Applicant: DELTA ELECTRONICS, INC.
Inventor： Laszlo Huber , Tomas Sadilek , Misha Kumar , Zhiyu Shen , Jinfa Zhang , Chia-Hsiong Huang , Peter Mantovanelli Barbosa
Abstract: A DC/DC converter may be formed out of the combination of a first converter that is optimized to transfer energy from a voltage source to a load, and a second converter that receives a control signal derived from the load voltage to regulate the load voltage. The DC/DC converter may be configured as a sigma converter, a delta converter, or a sigma-delta converter. The mode of operation being selected according to the source voltage or the load voltage, either of which may vary over a wide range.
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公开(公告)号：US10153710B1
公开(公告)日：2018-12-11
申请号：US15658894
申请日：2017-07-25
Applicant: DELTA ELECTRONICS, INC.
Inventor： Peter Mantovanelli Barbosa , Laszlo Huber , Brian T. Irving
Abstract: A power supply includes multiple power modules and a control circuit. Input terminals of the power modules are connected in star connection such that each power module receives a phase input voltage. Output terminals of the power modules are connected in parallel. Each power modules includes a first and a second converter. The first converter converts the phase input voltage into an intermediate bus voltage. The second converter outputs a DC supply voltage according to the intermediate bus voltage. The control circuit is coupled to the power modules and configured to output first and second driving signals to control the first and second converters in the power modules. A bus voltage average value is calculated by the control circuit according to the intermediate bus voltages of the power modules, and the first and the second driving signals for the power modules are generated according to the bus voltage average value.
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公开(公告)号：US10141853B2
公开(公告)日：2018-11-27
申请号：US15428885
申请日：2017-02-09
Applicant: DELTA ELECTRONICS, INC.
Inventor： Haibin Song , Laszlo Huber , Daofei Xu , Alpha Zhang , Milan M. Jovanovic , Chien-Chung Chang
Abstract: A flyback power converter includes a hybrid clamp circuit and a corresponding power management unit that substantially optimizes the performance of the flyback power converter in its entire line and load ranges. The clamp circuit, which is connected in parallel to a primary winding of the flyback transformer, includes a parallel combination of a capacitor and resistor that is connected in series with a parallel combination of a switch and a diode. By sensing the operating conditions, the power management circuit configures the clamp circuit either as a passive clamp or as an active clamp. In the passive-clamp configuration, the switch is kept turned off. In the active-clamp configuration, the switch operates with pulse-width modulation (PWM) which enables ZVS turn-on of the main switch.
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公开(公告)号：US20180226895A1
公开(公告)日：2018-08-09
申请号：US15428885
申请日：2017-02-09
Applicant: DELTA ELECTRONICS, INC.
Inventor： Haibin Song , Laszlo Huber , Daofei Xu , Alpha Zhang , Milan M. Jovanovic , Chien-Chung Chang
CPC classification number: H02M3/33569 , H02M1/32 , H02M1/34 , H02M3/33592 , H02M2001/0009 , H02M2001/0048 , H02M2001/0054 , H02M2001/344
Abstract: A flyback power converter includes a hybrid clamp circuit and a corresponding power management unit that substantially optimizes the performance of the flyback power converter in its entire line and load ranges. The clamp circuit, which is connected in parallel to a primary winding of the flyback transformer, includes a parallel combination of a capacitor and resistor that is connected in series with a parallel combination of a switch and a diode. By sensing the operating conditions, the power management circuit configures the clamp circuit either as a passive clamp or as an active clamp. In the passive-clamp configuration, the switch is kept turned off. In the active-clamp configuration, the switch operates with pulse-width modulation (PWM) which enables ZVS turn-on of the main switch.
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