公开(公告)号：US09893602B2

公开(公告)日：2018-02-13

申请号：US14612652

申请日：2015-02-03

Applicant: Infineon Technologies Austria AG

Inventor： Martin Krueger ,  Marc Fahlenkamp ,  Torsten Hinz

IPC: H02M1/00 ,  H02M3/335

CPC classification number: H02M1/00 ,  H02M3/33507 ,  H02M2001/0025

Abstract: 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.

公开(公告)号：US09525354B2

公开(公告)日：2016-12-20

申请号：US14600816

申请日：2015-01-20

Applicant: Infineon Technologies Austria AG

Inventor： Marc Fahlenkamp ,  Josef Neulinger

IPC: H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33507 ,  H02M2001/0035 ,  H02M2001/0054 ,  Y02B70/1491 ,  Y02B70/16

Abstract: A method of operating a power supply having a transformer, a transistor controlling the current through a primary side of the transformer, and a control unit for controlling the switching of the transistor to generate current pulses in the transformer, is suggested, the method comprising receiving a feedback signal, and exiting a burst mode and entering a normal mode based on the feedback signal in case the feedback signal exceeds a first threshold value or in case the feedback signal exceeds a second threshold value for at least a first amount of time and in case the feedback signal exceeds a third threshold value, wherein the third threshold value is larger than the second threshold value and the first threshold value is larger than the third threshold value.

Abstract translation: 提出了一种操作具有变压器的电源的方法，控制通过变压器的初级侧的电流的晶体管，以及用于控制晶体管的开关以在变压器中产生电流脉冲的控制单元，该方法包括接收 反馈信号，并且在反馈信号超过第一阈值的情况下或者在反馈信号超过第二阈值至少第一时间量的情况下，基于反馈信号退出突发模式并进入正常模式，并且在 情况下反馈信号超过第三阈值，其中第三阈值大于第二阈值，并且第一阈值大于第三阈值。

公开(公告)号：US20150236597A1

公开(公告)日：2015-08-20

申请号：US14598747

申请日：2015-01-16

Applicant: Infineon Technologies Austria AG

Inventor： Torsten Hinz ,  Marc Fahlenkamp ,  Martin Krueger

IPC: H02M3/335

CPC classification number: H02M1/08 ,  H02M3/156 ,  H02M3/157 ,  H02M3/33515 ,  H02M3/33523 ,  H02M2001/0022 ,  H02M2001/0058 ,  H02M2001/0064 ,  Y02B70/1491

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20190115837A1

公开(公告)日：2019-04-18

申请号：US16162847

申请日：2018-10-17

Applicant: Infineon Technologies Austria AG

Inventor： Marc Fahlenkamp ,  Martin Krueger

IPC: H02M3/335 ,  H02M1/42 ,  G01R19/165

Abstract: 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.

公开(公告)号：US09515545B2

公开(公告)日：2016-12-06

申请号：US14598747

申请日：2015-01-16

Applicant: Infineon Technologies Austria AG

Inventor： Torsten Hinz ,  Marc Fahlenkamp ,  Martin Krueger

IPC: H02M3/156 ,  H02M1/08 ,  H02M3/157 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M1/08 ,  H02M3/156 ,  H02M3/157 ,  H02M3/33515 ,  H02M3/33523 ,  H02M2001/0022 ,  H02M2001/0058 ,  H02M2001/0064 ,  Y02B70/1491

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20150244274A1

公开(公告)日：2015-08-27

申请号：US14606703

申请日：2015-01-27

Applicant: Infineon Technologies Austria AG

Inventor： Marc Fahlenkamp ,  Anthony Sanders ,  Jens Barrenscheen

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/33523 ,  H02M3/33592 ,  H02M2001/0035 ,  Y02B70/16

Abstract: In accordance with an embodiment, a method of controlling a switched-mode power supply includes operating the switched-mode power supply in a first operating mode by monitoring a feedback signal from an output of the power supply using a feedback interface circuit in a first configuration. The method further includes determining when the feedback signal crosses a first threshold in a first direction, and transitioning the switched-mode power from the first operating to a second operating mode by switching the feedback interface circuit from the first configuration to a second configuration.

Abstract translation: 根据实施例，一种控制开关式电源的方法包括：使用第一配置中的反馈接口电路监视来自电源的输出的反馈信号，以第一操作模式操作开关模式电源 。 该方法还包括确定反馈信号何时在第一方向上跨越第一阈值，以及通过将反馈接口电路从第一配置切换到第二配置，将开关模式功率从第一操作转换到第二操作模式。

公开(公告)号：US20150236598A1

公开(公告)日：2015-08-20

申请号：US14612586

申请日：2015-02-03

Applicant: Infineon Technologies Austria AG

Inventor： Martin Krueger ,  Marc Fahlenkamp ,  Torsten Hinz

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M1/44 ,  H02M3/33515 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US10892687B2

公开(公告)日：2021-01-12

申请号：US16584104

申请日：2019-09-26

Applicant: Infineon Technologies Austria AG

Inventor： Marc Fahlenkamp ,  Alfredo Medina-Garcia

IPC: H02M3/335 ,  H02M1/00 ,  H02M1/08

Abstract: Power converter controller, asymmetric power converter and method for operating a power converter. Power converter controllers, power converters and method are provided. In some configurations, first and second primary side switches of the power converter are controlled, in each switching cycle such that first a first switch is closed, then a second switch is closed and then again a first switch is closed.

公开(公告)号：US10727751B2

公开(公告)日：2020-07-28

申请号：US16393237

申请日：2019-04-24

Applicant: Infineon Technologies Austria AG

Inventor： Marc Fahlenkamp ,  Torsten Hinz

IPC: H02M3/335 ,  H02M1/00

Abstract: A switched-mode power supply includes: a switching converter converts an input voltage into an output voltage in accordance with a switching signal, wherein the switching converter includes a transformer providing galvanic isolation between a primary side and a secondary side of the switching converter; and a wake-up circuit connected to the secondary side of the switching converter, the wake-up circuit coupled to the secondary side of the switching converter and operable to generate a feedback signal that indicates whether the output voltage is greater than or equal to a threshold value. A primary side regulator generates a control signal depending on a reference value and a measured value (VAUX) representing the output voltage. Primary side logic generates the switching signal depending on the control signal. A tracking unit receives the feedback signal via a galvanically isolating component and adjusts the reference voltage based on the feedback signal.

公开(公告)号：US10547243B2

公开(公告)日：2020-01-28

申请号：US16207942

申请日：2018-12-03

Applicant: Infineon Technologies Austria AG

Inventor： Xiaowu Gong ,  Marc Fahlenkamp ,  Anthony Sanders

IPC: H02M3/335

Abstract: A flyback converter includes a primary-side switch connected to a primary-side winding of a transformer and a secondary-side switch connected to a secondary-side winding of the transformer. The flyback converter is operated by controlling the primary-side switch to store energy in the transformer during ON periods of the primary-side switch, switching on the secondary-side switch synchronously with switching off the primary-side switch to transfer energy from the transformer to the secondary side, determining an off time of the secondary-side switch based on a reflected input voltage measured at the secondary-side winding when the primary-side switch is on, accounting for a settling time of the reflected input voltage when determining the off time of the secondary-side switch so that the settling time has little or no effect on the off time, and switching off the secondary-side switch based on the off time.