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公开(公告)号：US20230318462A1
公开(公告)日：2023-10-05
申请号：US17712490
申请日：2022-04-04
IPC分类号： H02M3/335
CPC分类号： H02M3/33569
摘要： A power supply includes a controller. The controller controls switching of a first switch and a second switch in a power supply to regulate conveyance of energy from a primary winding of a transformer to a secondary winding of the transformer to generate an output voltage. To control generation of the output voltage, the controller receives a first signal generated at a first node coupling the first switch and the second switch. As discussed herein, the controller controls activation of the first switch to an ON state depending on a magnitude of the first signal. This disclosure provides improved reliability of power supply components (such as one or more switches) because such components are no longer stressed (or overstressed) due to body diode cross conduction.
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公开(公告)号：US10826404B2
公开(公告)日：2020-11-03
申请号：US16352156
申请日：2019-03-13
发明人： Po-Jung Chung , Martin Krueger
摘要： A power supply as described herein includes a voltage converter, main controller, and a bias controller. The voltage converter including a primary stage and a secondary stage. The controller is operable to control regulation of an output voltage from the secondary stage based on a received feedback signal. As its name suggests, the output voltage from the secondary stage powers a load. During certain load conditions, the bias controller maintains (via novel biasing) a magnitude of a power supply voltage above a bias threshold value. More specifically, the bias controller is operable to prevent the power supply voltage from falling below the bias threshold value, preventing an under voltage lockout condition such that the controller is able to quickly continue conveyance of sufficient energy from the first stage to the second stage when the load increases a rate of consuming power provided by the output voltage.
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公开(公告)号：US09893602B2
公开(公告)日：2018-02-13
申请号：US14612652
申请日：2015-02-03
发明人： Martin Krueger , Marc Fahlenkamp , Torsten Hinz
CPC分类号： H02M1/00 , H02M3/33507 , H02M2001/0025
摘要： In accordance with an embodiment, a method of operating a switched-mode power converter includes driving a switching element in successive drive cycles, in which the switching element is driven to switch on for an on-period and subsequently driven to switch off for an off-period; sampling a feedback signal two or more times during the drive cycles, where the feedback signal includes a signal representative of an operation parameter of the switched-mode power converter and noise. The method further includes filtering the sampled feedback signal to extract the signal representative of the operation parameter from the sampled feedback signal and controlling the switching element according to the filtered feedback signal.
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公开(公告)号：US20150236597A1
公开(公告)日：2015-08-20
申请号：US14598747
申请日：2015-01-16
发明人： Torsten Hinz , Marc Fahlenkamp , Martin Krueger
IPC分类号： H02M3/335
CPC分类号： H02M1/08 , H02M3/156 , H02M3/157 , H02M3/33515 , H02M3/33523 , H02M2001/0022 , H02M2001/0058 , H02M2001/0064 , Y02B70/1491
摘要： In accordance with an embodiment, a method includes driving an electronic switch in a switched-mode power converter in successive drive cycles, wherein driving the switch in each of the drive cycles comprises switching on the electronic for an on-period and subsequently switching off the electronic switch for an off-period, and measuring an operation parameter of the switched-mode power converter during the on-periods of the drive cycles, and storing the operation parameter measured in an on-period if a duration of the on-period met a predefined criteria. The method further includes forcing the on-period of a drive cycle to meet the predefined criteria if the operation parameter has not been stored for a predefined number of drive cycles, or for a pre-defined time duration.
摘要翻译： 根据实施例，一种方法包括在连续的驱动周期中驱动开关式功率转换器中的电子开关，其中在每个驱动周期中驱动开关包括接通电子器件以接通时间段并随后关断 电子开关，并且在所述驱动周期的接通时段期间测量所述开关模式功率转换器的操作参数，并且如果所述接通时段的持续时间满足，则存储在接通时间段中测量的所述操作参数 一个预定义的标准。 该方法还包括：如果操作参数还没有被存储在预定数量的驱动周期内，或者对于预定义的持续时间，则迫使驱动周期的接通周期满足预定准则。
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公开(公告)号：US20150048807A1
公开(公告)日：2015-02-19
申请号：US13970414
申请日：2013-08-19
发明人： Lim Shu Fan , Martin Krueger
IPC分类号： H02M1/42
CPC分类号： H02M1/42 , H02M1/4225 , Y02B70/126
摘要： A power factor correction (PFC) circuit includes a first inductor, which is operably supplied with an input voltage and an input current. The input voltage is a rectified AC line voltage. A semiconductor switch has a load current path coupled in series with the first inductor. An output terminal is coupled to the inductor and operably providing an output voltage and an output current. A controller circuit controls the cyclic switching operation of the semiconductor switch. The controller circuit is configured to monitor a feedback signal representing the voltage drop across the load current path of the semiconductor switch, to detect at least one local minimum in the feedback signal while the semiconductor switch is off, and to switch on the semiconductor switch in response to detecting the N-th local minimum in the feedback signal.
摘要翻译： 功率因数校正（PFC）电路包括可操作地提供输入电压和输入电流的第一电感器。 输入电压为整流的交流线路电压。 半导体开关具有与第一电感器串联耦合的负载电流路径。 输出端子耦合到电感器并且可操作地提供输出电压和输出电流。 控制器电路控制半导体开关的循环切换操作。 控制器电路被配置为监测表示半导体开关的负载电流路径上的电压降的反馈信号，以在半导体开关断开时检测反馈信号中的至少一个局部最小值，并且将半导体开关导通 响应于检测反馈信号中的第N个局部最小值。
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公开(公告)号：US20190115837A1
公开(公告)日：2019-04-18
申请号：US16162847
申请日：2018-10-17
发明人： Marc Fahlenkamp , Martin Krueger
IPC分类号： H02M3/335 , H02M1/42 , G01R19/165
摘要： Voltage converter controllers, voltage converter systems and corresponding methods are provided. In normal operation, a voltage converter stage of the system is controlled based on a feedback voltage from an output. In a low power mode, the system is controlled based on a supply voltage provided to a controller of the system.
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公开(公告)号：US09787191B2
公开(公告)日：2017-10-10
申请号：US14794655
申请日：2015-07-08
发明人： Jens Barrenscheen , Martin Krueger , Marcus Schaemann , Ali Fawaz
CPC分类号： H02M3/33507 , H02M1/4258 , H02M3/33592 , H02M2001/0058 , Y02B70/126 , Y02B70/1433 , Y02B70/1491
摘要： An example relates to a method for operating a converter comprising (i) determining whether a valley for switching the converter in a quasi-resonant mode is available within a predetermined time range; (ii) selecting the valley if it is available within the predetermined time range; and (iii) changing the mode for operating the converter if the valley is not available within the predetermined time range.
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公开(公告)号：US09515545B2
公开(公告)日：2016-12-06
申请号：US14598747
申请日：2015-01-16
发明人： Torsten Hinz , Marc Fahlenkamp , Martin Krueger
CPC分类号： H02M1/08 , H02M3/156 , H02M3/157 , H02M3/33515 , H02M3/33523 , H02M2001/0022 , H02M2001/0058 , H02M2001/0064 , Y02B70/1491
摘要： In accordance with an embodiment, a method includes driving an electronic switch in a switched-mode power converter in successive drive cycles, wherein driving the switch in each of the drive cycles comprises switching on the electronic for an on-period and subsequently switching off the electronic switch for an off-period, and measuring an operation parameter of the switched-mode power converter during the on-periods of the drive cycles, and storing the operation parameter measured in an on-period if a duration of the on-period met a predefined criteria. The method further includes forcing the on-period of a drive cycle to meet the predefined criteria if the operation parameter has not been stored for a predefined number of drive cycles, or for a pre-defined time duration.
摘要翻译： 根据实施例，一种方法包括在连续的驱动周期中驱动开关式功率转换器中的电子开关，其中在每个驱动周期中驱动开关包括接通电子器件以接通时间段并随后关断 电子开关，并且在所述驱动周期的接通时段期间测量所述开关模式功率转换器的操作参数，并且如果所述接通时段的持续时间满足，则存储在接通时间段中测量的所述操作参数 一个预定义的标准。 该方法还包括：如果操作参数还没有被存储在预定数量的驱动周期内，或者对于预定义的持续时间，则迫使驱动周期的接通周期满足预定准则。
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公开(公告)号：US20150236598A1
公开(公告)日：2015-08-20
申请号：US14612586
申请日：2015-02-03
发明人： Martin Krueger , Marc Fahlenkamp , Torsten Hinz
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/44 , H02M3/33515 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： In accordance with an embodiment, a method of operating a switched-mode power converter includes defining at least one of a minimum switching frequency threshold and a maximum switching frequency threshold; detecting valleys occurring in a voltage over the switching element when the switching element is in an off-state; and either in a quasi-resonant mode, switching the switching element on when an nth consecutive valley occurs, n being an integer equal to or greater than one, so that the actual switching frequency is at least one of: below the maximum switching frequency threshold and above the minimum switching frequency threshold, or in a forced switching frequency mode, switching the switching element on so that the actual switching frequency is the maximum or the minimum switching frequency.
摘要翻译： 根据实施例，一种操作开关式功率转换器的方法包括定义最小开关频率阈值和最大开关频率阈值中的至少一个; 当所述开关元件处于断开状态时检测在所述开关元件上的电压中发生的谷值; 并且在准谐振模式中，当第n个连续的谷出现时切换开关元件，n是等于或大于1的整数，使得实际的开关频率是以下中的至少一个：低于最大开关频率阈值 并且在最小开关频率阈值之上，或者在强制开关频率模式中，切换开关元件，使得实际开关频率为最大或最小开关频率。
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公开(公告)号：US20140217998A1
公开(公告)日：2014-08-07
申请号：US13758669
申请日：2013-02-04
发明人： Martin Krueger
IPC分类号： G05F1/46
CPC分类号： G05F1/46
摘要： In accordance with an embodiment, a power supply controller includes an error signal input configured to be coupled to a sensing node of a power supply, a control output configured to be coupled to a switch control circuit, and a control circuit having an input coupled to the error signal input. The control circuit is configured to provide a first variable limit signal if the error signal input is in a first range, and to adjust the first variable limit signal according to the error signal input.
摘要翻译： 根据实施例，电源控制器包括被配置为耦合到电源的感测节点的误差信号输入，被配置为耦合到开关控制电路的控制输出，以及控制电路，其具有耦合到 误差信号输入。 如果误差信号输入处于第一范围，则控制电路被配置为提供第一可变限制信号，并且根据误差信号输入来调整第一可变限制信号。
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