Abstract: The invention concerns a converter circuit for providing a load current to a load, in particular to a lighting device such as a LED lighting module. The converter circuit comprises at least one switch configured to switch between a conducting state and a non-conducting state based on a switch control signal. A current sense circuit of the converter circuit generates a current sense signal based on a sensed current via the switch. Based on the current sense signal, a control circuit of the converter circuit generates the switch control signal. The control circuit controls the switch to switch asynchronously from the conducting state to the non-conducting state when the current sense signal reaches a threshold value.

Abstract: The invention relates to a control integrated circuit (1), control IC, for controlling an operating device (15) for lighting means (10). The control IC (1) comprises a driver logic (3a) for driving a hardware module (4a), a control logic (2a) for controlling the driver logic (3a), and a clock generator (5) for generating two or more clock signals (clk1, clk2) that have a different frequency with regard to each other. The clock generator (5) is configured to provide a first clock signal (clk1) of the two or more clock signals (clk1, clk2) to the control logic (2a), and a second clock signal (clk2) of the two or more clock signals (clk1, clk2) to the driver logic (3a). The invention further relates to an operating device (15) for lighting means, the operating device (15) comprising such a control IC (1); and to a luminaire comprising such an operating device (15).

Abstract: The invention relates to an LED-driver, comprising an actively switched PFC circuitry and a bus interface for a wire-bound bus, wherein a voltage supply for the bus interface for powering the bus is tapped off the output voltage of the active PFC circuitry, further comprising a control circuitry for a feedback control of an output voltage of the actively switched PFC by controlling a switch of the PFC, wherein the time constant of the feedback control of the control circuitry is faster during time periods in which the bus interface is transmitting or receiving signals, compared to time periods without activity.

Abstract: The invention relates to an LED-driver, comprising an actively switched PFC circuitry and a bus interface for a wire-bound bus, wherein a voltage supply for the bus interface for powering the bus is tapped off the output voltage of the active PFC circuitry, further comprising a control circuitry for a feedback control of an output voltage of the actively switched PFC by controlling a switch of the PFC, wherein the time constant of the feedback control of the control circuitry is faster during time periods in which the bus interface is transmitting or receiving signals, compared to time periods without activity.