Programmable Phase-Cut Dimmer Operation
First Claim
1. ) A control circuit for a power converter;
- wherein the power converter is configured to convert an input power derived from a mains power supply into a drive power for a light source;
wherein the control circuit comprisesa dimmer mode detection unit configured to determine a first dimmer mode from a plurality of pre-determined dimmer modes, based on one or more sensor signals sensed at corresponding one or more nodes of the power converter;
wherein the first dimmer mode is indicative of whether or not the input power has been derived from the mains power supply using a dimmer;
a state processor configured to determine a first operation mode of the power converter based on pre-determined first state information;
wherein the pre-determined first state information is dependent on the first dimmer mode; and
a first control unit configured to generate a first control signal for operating the power converter in accordance to the first operation mode.
1 Assignment
0 Petitions
Accused Products
Abstract
The present document relates to solid state lighting (SSL) devices. A driver circuit for phase-cut dimmable SSL based lighting assemblies is described. A control circuit for a power converter is provided. The power converter is configured to convert an input power derived from a mains power supply into a drive power for a light source. The control circuit comprises a dimmer mode detection unit to determine a first dimmer mode. The first dimmer mode indicates if the input power has been derived from the mains power supply using a dimmer. The control circuit comprises a state processor configured to determine a first operation mode of the power converter. The pre-determined first state information is dependent on the first dimmer mode. The control circuit comprises a first control unit configured to generate a first control signal for operating the power converter in accordance to the first operation mode.
-
Citations
28 Claims
-
1. ) A control circuit for a power converter;
- wherein the power converter is configured to convert an input power derived from a mains power supply into a drive power for a light source;
wherein the control circuit comprisesa dimmer mode detection unit configured to determine a first dimmer mode from a plurality of pre-determined dimmer modes, based on one or more sensor signals sensed at corresponding one or more nodes of the power converter;
wherein the first dimmer mode is indicative of whether or not the input power has been derived from the mains power supply using a dimmer;a state processor configured to determine a first operation mode of the power converter based on pre-determined first state information;
wherein the pre-determined first state information is dependent on the first dimmer mode; anda first control unit configured to generate a first control signal for operating the power converter in accordance to the first operation mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- wherein the power converter is configured to convert an input power derived from a mains power supply into a drive power for a light source;
-
15. ) A method for controlling a power converter;
- wherein the power converter converts an input power derived from a mains power supply into a drive power for a light source;
wherein the method comprisesdetermining a first dimmer mode from a plurality of pre-determined dimmer modes, based on one or more sensor signals sensed at corresponding one or more nodes of the power converter;
wherein the first dimmer mode is indicative of whether or not the input power has been derived from the mains power supply using a dimmer;determining a first operation mode of the power converter based on pre-determined first state information;
wherein the pre-determined first state information is dependent on the first dimmer mode; andgenerating a first control signal for operating the power converter in accordance to the first operation mode. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
- wherein the power converter converts an input power derived from a mains power supply into a drive power for a light source;
Specification