Tridonic Patente

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Disclosed is a resonant hybrid flyback converter (1) for a light source (4). The converter (1) comprises a transformer (101, 102), comprising a primary-side inductance (101, L_p) and a secondary-side inductance (102, L_s); a high-side switch (104) and a low-side switch (105), connected in series between an input electric potential and a primary-side ground electric potential of the converter (1); a resonant tank circuit (101, 101", 106), connected in series between a common electric potential of the switches (104, 105) and the primary-side ground electric potential, wherein the resonant tank circuit (101, 101", 106) comprises the primary-side inductance (101, L_p). The converter (1) further comprises a current sensing circuit, configured to sense a positive peak current (301, I_magpos) through the primary-side inductance (101, L_p); a voltage sensing circuit (103, 107-110), configured to sense a voltage (302, V_Lmsec; 302', V_Lmpri) across an inductance (101, 102) of the transformer (101, 102); and a control circuit, configured to estimate a current (303, I_LEDest) through the light source (4) in accordance with the positive peak current (301, I_magpos) through the primary-side inductance (101, L_p) and the voltage (302, V_Lmsec; 302', V_Lmpri) across the inductance (101, 102) of the transformer (101, 102); and regulate the current (305, I_LED) through the light source (4) in accordance with a setpoint value (304, I_LEDref) and the estimated current (303, I_LEDest) through the light source (4). This avoids a sensing of the current (305, I_LED) through the light source (4) and an associated signal transfer across a SELV barrier of the converter (1).

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A driver device (1) for generating a load current for at least one load, the driver device (1) comprising an isolation barrier for isolating electrically a primary circuit (2) and a secondary circuit (4) of the driver device (1), the secondary circuit (4) comprises at least a first load terminal (LED1+) and a second load terminal (LED2+). The secondary circuit (4) comprises at least one filter circuit (1) connected with a load terminal (LED2+) of the first load terminal (LED1+) and the second load terminal (LED+), and the at least one filter circuit (11) is configured to provide a signal that is generated based on the load current output via the connected load terminal. The driver device (1) may form part of a system comprising the driver device (1) driving the load, and the load is connected between a common load terminal (LED-) and one of the first load terminal (LED1+) and the second load terminal (LED2+) of the driver device (1).

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The present invention relates to an operating device configured to provide a supply voltage and/or current to an illuminant (2), to generate or receive, for each time interval of successive time intervals, a temperature signal indicating at least one temperature value, to determine, for each time interval, whether the time interval is assignable to at least one temperature class of a plurality of temperature classes based on the at least one temperature value and to increment or decrement a counter value of each temperature class to which a time interval is assignable.

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Die vorliegende Erfindung betrifft einen Sicherungsring (1), welcher sich im Wesentlichen in einer Ebene (E) erstreckt, aufweisend einen Ringkörper (2), welcher sich um eine Mittelachse (X) herum zwischen zwei einen Ringschlitz (3) begrenzenden Enden (4, 5) erstreckt, und mehrere sich vom Ringkörper (2) über dessen Umfang verteilt und radial zur Mittelachse (X) hin in der Ebene (E) flächig erstreckende Sicherungsvorsprünge (7), wobei wenigstens einer der Sicherungsvorsprünge (7) wenigstens einen axialen und zur Mittelachse (X) hin offenen Spreizschlitz (9) aufweist. Die vorliegende Erfindung betrifft ferner eine elektronische Komponente (10) mit einem Gehäuse (11) sowie dem erfindungsgemäßen Sicherungsring (1). Ferner betrifft die vorliegende Erfindung eine Baugruppe (40) mit einem Baugruppengehäuse (41) sowie der erfindungsgemäßen elektronischen Komponente (10).

The invention relates to an operating device for lighting means (400), comprising: output terminals (407a, 407b) supplying lighting means (408), such as e.g. a LED load, a control circuitry (404) for controlling the electrical supply of the lighting means (408); a NFC module (406) configured to receive NFC signals and output a pulse width modulation, PWM, signal with variable duty cycle; and a conversion circuitry (405) arranged for being supplied with the PWM signal and for outputting a DC voltage supplied to an input of the control circuitry (404). The DC voltage is a function of the duty cycle of the PWM signal according to a set conversion rate, wherein the conversion circuitry (405) is configured to be supplied with an internal or external control signal to set at least two conversion rates.

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Disclosed is a hybrid switched-mode converter (1) for an LED load (23). The converter (1) comprises a first decoupling element (11), a second decoupling element (12), a third decoupling element (13) and a fourth decoupling element (14) connected in series across an input port of the converter (1) connectable to a DC power source (22). The converter (1) further comprises a first capacitive storage element (15) connected in parallel to the series connection of the second decoupling element (12) and the third decoupling element (13). The converter (1) further comprises an inductive storage element (16) and a second capacitive storage element (17) connected in parallel to the series connection of the third decoupling element (13) and the fourth decoupling element (14). The second capacitive storage element (17) is connected in parallel to an output port of the converter (1) connectable to the LED load (23). The converter (1) further comprises a control logic (18) being configured to: alternatingly open the first decoupling element (11) and the second decoupling element (12) in accordance with a modulation frequency with an intermediate time lag; preserve a duration of the time lag in a first dimming range of the LED load (23); and modulate the duration of the time lag in a second dimming range of the LED load (23).

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The present invention provides an operating device (1) for lighting means (10). The operating device (1) comprises a switched resonant converter comprising at least two switches (3a, 3b), and a control unit (4) configured to control the switching operation of the at least two switches (3a, 3b) by modulating a high frequency operation with low frequency PWM pulses with a varying frequency (Fpwm). The control unit (4) is configured to adjust an electrical power transferred by the switched resonant converter in a power range, the power range comprising at least a first power subrange (PSR1) and a second power subrange (PSR2) adjacent to the first power subrange (PSR1). The control unit is configured to decrease the electrical power transferred in the first power subrange (PSR1) by increasing the off-time duration (TOFF) between two PWM pulses, while the on-time duration (TON) of the PWM pulses is kept constant. The control unit (4) is configured to increase the electrical power transferred in the second power subrange (PSR2) by increasing the on-time duration (TON) of the PWM pulses, while the off-time duration (TOFF) between two PWM pulses is kept constant. In addition a luminaire and a method for operating one or more lighting means are provided.

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The invention relates to a method (100) for communicating data, such as commissioning data, from a computing device (301) to a lighting technology device (303) with a DALI interface (305), comprising: opening (101) a web browser app on the computing device (301); accessing (103) a predefined web browser address; sending (105) data from that web browser address to an interface module (309) connected to the computing device (301), the interface module (309) being designed for translating the data onto a DALI bus (307); and sending (107) the data over the DALI bus (307) to the DALI interface (305) of the lighting technology device (303).