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。

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：US10143049B2

公开(公告)日：2018-11-27

申请号：US15787725

申请日：2017-10-19

Applicant: OSRAM GmbH

Inventor： Ralf Berchtold ,  Maximilian Schmidl

IPC: H05B37/02 ,  H05B33/08

Abstract: In various embodiments, an electronic operating device for light sources is provided. The electronic operating device may include an input part for inputting an input voltage and an output part for outputting an output voltage and an output current for the light sources. The electronic operating device is configured to operate the output part as a voltage source for a period of time after the input voltage has been applied, and subsequently to operate the output part as a current source after this period of time.

公开(公告)号：US20180116018A1

公开(公告)日：2018-04-26

申请号：US15787725

申请日：2017-10-19

Applicant: OSRAM GmbH

Inventor： Ralf Berchtold ,  Maximilian Schmidl

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0815 ,  H05B33/083 ,  H05B33/0842 ,  H05B33/0884 ,  H05B33/0896 ,  H05B37/0281

Abstract: In various embodiments, an electronic operating device for light sources is provided. The electronic operating device may include an input part for inputting an input voltage and an output part for outputting an output voltage and an output current for the light sources. The electronic operating device is configured to operate the output part as a voltage source for a period of time after the input voltage has been applied, and subsequently to operate the output part as a current source after this period of time.