Adaptive current regulation for solid state lighting
First Claim
1. A system for power conversion, the system couplable to a first switch coupled to an alternating current (AC) power source, the system comprising:
- a switching power supply including a second switch;
solid state lighting coupled to the switching power supply;
a voltage sensor;
a current sensor;
a memory;
a first adaptive interface circuit including a resistive impedance, wherein the resistive impedance is configured to conduct current from the first switch in a default mode;
a second adaptive interface circuit configured to create a resonant process if the first switch is turned on; and
a controller coupled to the voltage sensor, the current sensor, the memory, the second switch, the first adaptive interface circuit, and the second adaptive interface circuit, wherein the controller is configured to modulate the second adaptive interface circuit to provide a current path during the resonant process if the first switch is turned on.
2 Assignments
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Accused Products
Abstract
Representative embodiments provide an apparatus, system, and method for power conversion to provide power to solid state lighting, and which may be coupled to a first switch, such as a dimmer switch. A representative system for power conversion comprises: a switching power supply comprising a second, power switch; solid state lighting coupled to the switching power supply; a voltage sensor; a current sensor; a memory; a first adaptive interface circuit to provide a resistive impedance to the first switch and conduct current from the first switch in a default mode; a second adaptive interface circuit to create a resonant process when the first switch turns on; and a controller to modulate the second adaptive interface circuit when the first switch turns on to provide a current path during the resonant process of the switching power supply.
54 Citations
54 Claims
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1. A system for power conversion, the system couplable to a first switch coupled to an alternating current (AC) power source, the system comprising:
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a switching power supply including a second switch; solid state lighting coupled to the switching power supply; a voltage sensor; a current sensor; a memory; a first adaptive interface circuit including a resistive impedance, wherein the resistive impedance is configured to conduct current from the first switch in a default mode; a second adaptive interface circuit configured to create a resonant process if the first switch is turned on; and a controller coupled to the voltage sensor, the current sensor, the memory, the second switch, the first adaptive interface circuit, and the second adaptive interface circuit, wherein the controller is configured to modulate the second adaptive interface circuit to provide a current path during the resonant process if the first switch is turned on. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. An apparatus for power conversion, the apparatus couplable to a first switch coupled to an alternating current (AC) power source, the apparatus further couplable to solid state lighting, the apparatus comprising:
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a switching power supply including a second switch; a voltage sensor; a current sensor; a memory; a first adaptive interface circuit including a resistive impedance, wherein the first adaptive interface circuit is configured to conduct current from the first switch in a default mode; a second adaptive interface circuit configured to create a resonant process if the first switch is turned on; and a controller coupled to the voltage sensor, the current sensor, the memory, the second switch, the first adaptive interface circuit, and the second adaptive interface circuit, wherein the controller is configured to modulate the second adaptive interface circuit to provide a current path and to modulate a current of the first switch during the resonant process in response to the first switch being turned on. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. A system for power conversion, the system having a form factor compatible with an A19 standard, the system couplable to a dimmer switch coupled to an alternating current (AC) power source, the system comprising:
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a switching power supply including a power switch; a light-emitting diode coupled to the switching power supply; a voltage sensor configured to sense an input voltage level; a first adaptive interface circuit configured to conduct current from the dimmer switch in a default mode, wherein the first adaptive interface circuit is further configured to provide a substantially matching impedance to the dimmer switch; a second adaptive interface circuit configured to create a resonant process and to provide a current path during the resonant process; a memory; and a controller coupled to the voltage sensor, the memory, and the power switch, wherein the controller is configured to provide a pulse width modulation operating mode using a duty cycle less than a maximum duty cycle, and wherein the controller is configured to provide a current pulse operating mode in response to the duty cycle being within a predetermined range of the maximum duty cycle.
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Specification