公开(公告)号：US11971433B2

公开(公告)日：2024-04-30

申请号：US17719383

申请日：2022-04-13

Applicant: OSRAM GmbH

Inventor： Joachim Muehlschlegel

IPC: G01R19/00 ,  G01R19/02 ,  H02M1/00 ,  H02M1/32 ,  H02M3/156 ,  H05B45/3725

CPC classification number: G01R19/02 ,  H02M1/0009 ,  H02M1/32 ,  H02M3/156 ,  H05B45/3725

Abstract: A current measuring device for switched-mode electronic power converters includes two independent sensors connected in series for the current to be measured, one of said sensors providing an admittance and the other providing a conductance. The current measuring device further includes a parallel current measuring resistor and an average value capacitor which are connected in parallel contribute to the provided admittance. The conductance is provided by a serial current measuring resistor as one of the sensors. The current to be measured has both DC and AC current components. The current measuring device further includes a filter is transferred back into the power path or merged with the current measuring sensors.

公开(公告)号：US20220334150A1

公开(公告)日：2022-10-20

申请号：US17719383

申请日：2022-04-13

Applicant: OSRAM GmbH

Inventor： Joachim Muehlschlegel

IPC: G01R19/02 ,  H02M1/00 ,  H02M1/32 ,  H05B45/3725 ,  H02M3/156

Abstract: A current measuring device for switched-mode electronic power converters includes two independent sensors connected in series for the current to be measured, one of said sensors providing an admittance and the other providing a conductance. The current measuring device further includes a parallel current measuring resistor and an average value capacitor which are connected in parallel contribute to the provided admittance. The conductance is provided by a serial current measuring resistor as one of the sensors. The current to be measured has both DC and AC current components. The current measuring device further includes a filter is transferred back into the power path or merged with the current measuring sensors.

公开(公告)号：US20160204600A1

公开(公告)日：2016-07-14

申请号：US14989819

申请日：2016-01-07

Applicant: OSRAM GmbH

Inventor： Joachim Muehlschlegel

IPC: H02H9/04 ,  H05B33/08

CPC classification number: H02H9/04 ,  H01H83/10 ,  H02H9/043 ,  H02H9/06 ,  H05B33/089 ,  Y02B20/341

Abstract: An overvoltage protection apparatus may include a first connection for coupling to an N line, and at least one voltage-limiting element which is designed to block the current through the voltage-limiting element up to a predefinable threshold value of the voltage dropped across the voltage-limiting element and to conduct the current above this threshold value. The overvoltage protection apparatus may further include a second connection for coupling to a metal housing of an electrical apparatus, at least one capacitor, and at least one first non-reactive resistor. The at least one capacitor, the at least one first non-reactive resistor and the at least one voltage-limiting element are connected in series between the first connection and the second connection.

Abstract translation: 过电压保护装置可以包括用于耦合到N线的第一连接和至少一个限压元件，其被设计成阻挡通过电压限制元件的电流，直到电压下降的电压的预定阈值 并且使电流高于该阈值。 过电压保护装置还可以包括用于耦合到电气设备的金属外壳，至少一个电容器和至少一个第一非电抗电阻器的第二连接。 所述至少一个电容器，所述至少一个第一非电抗电阻器和所述至少一个限压元件串联连接在所述第一连接和所述第二连接之间。

公开(公告)号：US11882633B2

公开(公告)日：2024-01-23

申请号：US18064938

申请日：2022-12-13

Applicant: OSRAM GmbH

Inventor： Joachim Muehlschlegel ,  Markus Heckmann

IPC: H05B45/37

CPC classification number: H05B45/37

Abstract: A method for operating clocked and regulated electronic power converters may be contained in operating devices for light-emitting diodes. An associated regulating circuit may include at least one regulating amplifier having at least two regulating inputs, from the output of which a negative feedback network runs to one of its regulating inputs, a first input for the signal for a target value of the average of the output power to be regulated, and a second input which forwards a signal for the target value of a waveform or of a pulse pattern for the output power to be regulated to one of the regulating inputs via a DC current-blocking high-pass filter.

公开(公告)号：US11160151B2

公开(公告)日：2021-10-26

申请号：US17173282

申请日：2021-02-11

Applicant: OSRAM GmbH

Inventor： Joachim Muehlschlegel ,  Maximilian Schmidl

IPC: H05B45/382 ,  H05B45/10

Abstract: A circuit arrangement for operating a load includes a primary-side switched-mode converter with galvanic isolation of input and output voltage, having: a primary circuit, a secondary circuit and a power transformer, wherein: a first inductor and a second inductor, the first inductor being arranged in the secondary circuit in order to pass the current generated by the transformer when the energy is transferred to the secondary circuit, and the second inductor being interconnected in a measuring circuit. The second inductor is spatially arranged in a stray magnetic field generated by the first inductor; the measuring circuit has an output at which a measuring voltage is output, and the control device is connected to the output of the measuring circuit in order to determine a corresponding current flow from the output measuring voltage, and is configured to control the clocked operation of the switch depending on the current flow determined.

公开(公告)号：US11284488B2

公开(公告)日：2022-03-22

申请号：US17272936

申请日：2019-09-04

Applicant: Osram GmbH

Inventor： Joachim Muehlschlegel ,  Alessio Griffoni ,  Francesco Angelin ,  Antonio Stocco

IPC: H05B45/10 ,  H05B45/32 ,  H05B45/325 ,  H05B45/345 ,  H05B45/375

Abstract: An assembly and a method is provided where the LED module includes a plurality of module units interconnected between common connection lines in a sequential order with increasing distances towards a connection terminal of the LED module. The circuit assembly includes an output terminal having a first output terminal portion and a second output terminal portion, a main power supply for supplying an operation voltage potential to a first output terminal portion, a control device for generating a pulse width modulation signal, and an electronic switch coupled to the control device and configured to obtain the pulse width modulation signal and arranged to connect and disconnect a second output terminal portion to/from a reference potential in accordance with the pulse width modulation signal, such as to supply a pulse width modulated voltage to the output terminal. A pulse shaping unit is coupled to the control device.

公开(公告)号：US09705316B2

公开(公告)日：2017-07-11

申请号：US14989819

申请日：2016-01-07

Applicant: OSRAM GmbH

Inventor： Joachim Muehlschlegel

IPC: H05B33/08 ,  H02H9/04 ,  H01H83/10 ,  H02H9/06

CPC classification number: H02H9/04 ,  H01H83/10 ,  H02H9/043 ,  H02H9/06 ,  H05B33/089 ,  Y02B20/341

Abstract: An overvoltage protection apparatus may include a first connection for coupling to an N line, and at least one voltage-limiting element which is designed to block the current through the voltage-limiting element up to a predefinable threshold value of the voltage dropped across the voltage-limiting element and to conduct the current above this threshold value. The overvoltage protection apparatus may further include a second connection for coupling to a metal housing of an electrical apparatus, at least one capacitor, and at least one first non-reactive resistor. The at least one capacitor, the at least one first non-reactive resistor and the at least one voltage-limiting element are connected in series between the first connection and the second connection.

公开(公告)号：US09681505B2

公开(公告)日：2017-06-13

申请号：US14280699

申请日：2014-05-19

Applicant: OSRAM GmbH

Inventor： Maximilian Schmidl ,  Joachim Muehlschlegel

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  Y02B20/346

Abstract: A circuit arrangement includes a converter having a converter switch and a driver for the converter switch. The driver includes an interface coupling to a dimming apparatus supplying a dimming value. The driver provides an RF signal with a duty ratio at the output of the driver. The driver modifies the RF signal by superposition of a PWM signal such that, in correlation with the supplied dimming value, a predefinable number of periods of the RF signal is chopped from the RF signal. The driver is configured to reduce the duty ratio of the RF signal during at least one predefinable period of the RF signal in order to adjust levels of dimming which correspond to dimming values which are between a first and a second dimming value which differ from one another by at least one period of the RF signal.

公开(公告)号：US20140361704A1

公开(公告)日：2014-12-11

申请号：US14280699

申请日：2014-05-19

Applicant: OSRAM GmbH

Inventor： Maximilian Schmidl ,  Joachim Muehlschlegel

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  Y02B20/346

Abstract: A circuit arrangement includes a converter having a converter switch and a driver for the converter switch. The driver includes an interface coupling to a dimming apparatus supplying a dimming value. The driver provides an RF signal with a duty ratio at the output of the driver. The driver modifies the RF signal by superposition of a PWM signal such that, in correlation with the supplied dimming value, a predefinable number of periods of the RF signal is chopped from the RF signal. The driver is configured to reduce the duty ratio of the RF signal during at least one predefinable period of the RF signal in order to adjust levels of dimming which correspond to dimming values which are between a first and a second dimming value which differ from one another by at least one period of the RF signal.

Abstract translation: 电路装置包括具有转换器开关和用于转换器开关的驱动器的转换器。 驱动器包括耦合到提供调光值的调光装置的接口。 驱动器在驱动器的输出端提供一个占空比的RF信号。 驱动器通过叠加PWM信号来修改RF信号，使得与所提供的调光值相关，从RF信号中切断RF信号的可预定数量的周期。 驱动器被配置为在RF信号的至少一个预定义周期期间降低RF信号的占空比，以便调整对应于彼此不同的第一和第二调光值之间的调光值的调光电平 通过RF信号的至少一个周期。