Digital control circuit of an operating device for lamps
AssigneeTridonicAtco GmbH & Co. KG
InventorsStefan Zudrell-Koch, Guenter Marent
Life of this patent
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Abstract
The invention relates to an integrated digital control circuit for an operating device for lamps, comprising: an output for the pulsing of switches of a half-bridge circuit having an adjustable frequency, wherein a load circuit comprising the lighting devices may be connected to the half-bridge circuit, an input, to which a signal may be selectively supplied, said signal reflecting the current through the half-bridge or the current through the lamp. The input is internally branched into two analysis branches, the outputs of which are combined using a logic member, the output of which is connected in turn to a controller for adjusting the frequency of the half-bridge actuating signal.
Claims29
Control circuit for an operating device for lighting means, comprising an output for outputting a control signal for the lighting means operation, and an input for a signal, wherein:
- the input is internally connected to at least two parallel evaluation branches having outputs being supplied to a regulating module as an actual value signal feedback,
- the regulating module uses this actual value signal feedback and a desired value to determine a control value and outputs it at the output of the control circuit as an actuating signal,
- each of the parallel evaluation branches is designed for the purpose of performing an evaluation of the signal with the aid of different sets of criteria, and
- the sets of criteria are selected in such a manner that only one set of criteria is continuously fulfilled for each permissible signal type of the input, so that only one evaluation branch makes a contribution which varies with respect to time to the actual value signal for the regulating module, whereas the other evaluation branches never make a contribution or continuously make a contribution which is constant with respect to time.
Control circuit for an operating device for lighting means, comprising an output for outputting a control signal for the lighting means operation, and an input for a signal, wherein:
- the signal is processed internally in a serial manner in time division multiplexing and is then supplied to a regulating module as an actual value signal feedback,
- in the time division multiplexing portions the signal is evaluated with the aid of different sets of criteria, and
- the regulating module uses this actual value signal feedback and a desired value to determine a control value and outputs it at the output of the control circuit as an actuating signal.
Control circuit for an operating device for lighting means, comprising:
- an output for the pulsing of switches of a half-bridge circuit with an adjustable frequency and/or duty cycle, wherein a load circuit which contains the lighting means can be connected to the half-bridge circuit, and
- an input, to which optionally a signal that reproduces the current through the half-bridge, or a signal which reproduces the current through the lighting means can be supplied,
- wherein the input is connected internally to two evaluation branches having outputs that are combined with a logic element having an output that is connected, in turn, to a control unit for adjusting the frequency of the half-bridge control signal, and wherein the input is configured to accept as the signal supplied to the input both the signal that reproduces the current through the half-bridge and the signal which reproduces the current through the lighting means, either simultaneously or alternately.
Integrated digital control circuit for an operating device for lighting means, comprising:
- an output for the pulsing of switches of a half-bridge circuit with an adjustable frequency, wherein a load circuit that contains the lighting means can be connected to the half-bridge circuit, and
- an input, to which optionally a signal that reproduces the current through the half-bridge, or a signal that reproduces the current through the lighting means can be supplied,
- wherein the input branches internally into two evaluation branches which each have a comparator that provides output, in turn, to a control circuit for adjusting the frequency of the half-bridge circuit,
- wherein the input is configured to accept as the signal supplied to the input both the signal that reproduces the current through the half-bridge and the signal which reproduces the current through the lighting means, either simultaneously or alternately, and
- wherein different reference voltages are supplied to the two comparators.
Method for operating an operating device for lighting means by the output of an actuating signal, wherein:
- a signal is supplied at an input,
- the input is connected internally to at least two parallel evaluation branches, whose outputs, in turn, are combined and supplied to a regulating module as an actual value signal feedback,
- a regulating module uses this actual value signal feedback and a desired value to determine a control value and outputs it at the output of the control circuit as an actuating signal,
- each of several parallel evaluation branches performs an evaluation of the same signal with the aid of different sets of criteria, and
- the sets of criteria are selected in such a manner that only one set of criteria is continuously fulfilled for each permissible signal type of the input, so that only one evaluation branch makes a contribution which varies with respect to time to the actual value signal for the regulating module, whereas the other evaluation branches never make a contribution or continuously make a contribution which is constant with respect to time.
Method for optionally regulating the output of lighting means by an integrated digital control circuit that comprises:
- an output for the pulsing of switches of a half-bridge circuit with an adjustable frequency, wherein a load circuit that contains the lighting means is connected to the half-bridge circuit, and
- an input, to which optionally a signal which reproduces the current through the half-bridge, or a signal that reproduces the current through the lighting means can be supplied,
- wherein the signal applied at the input is supplied internally to two evaluation branches having outputs that are combined with a logic element, having an output that, in turn, is connected to a control unit for adjusting the frequency of the half-bridge control signal, and wherein the input is configured to accept as the signal supplied to the input both the signal that reproduces the current through the half-bridge and the signal which reproduces the current through the lighting means, either simultaneously or alternately.
Method for optionally regulating the output of lighting means by an integrated digital control circuit that comprises:
- an output for the pulsing of switches of a half-bridge circuit with an adjustable frequency, wherein a load circuit that contains the lighting means can be connected to the half-bridge circuit, and
- an input, to which optionally a signal that reproduces the current through the half-bridge, or a signal that reproduces the current through the lighting means can be supplied,
- wherein the signal applied at the input is supplied internally to two evaluation branches, each of which have a comparator that provides output, in turn, to a control circuit for adjusting the frequency of the half-bridge circuit,
- wherein the input is configured to accept as the signal supplied to the input both the signal that reproduces the current through the half-bridge and the signal which reproduces the current through the lighting means, either simultaneously or alternately, and
- wherein different reference voltages are supplied to the two comparators.
Dependencies are inferred from the claim text.