SYSTEMS AND METHODS FOR INTELLIGENT DIMMING CONTROL USING TRIAC DIMMERS
First Claim
1. An apparatus for a power conversion system, the apparatus comprising:
- a process-and-drive component configured to receive an input signal, process information associated with the input signal, and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system;
wherein;
the input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period; and
the drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period;
wherein the process-and-drive component is further configured to;
determine the first modulation period for the first input period;
change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period;
determine the second modulation period for the second input period; and
change the drive signal between the first logic level and the second logic level at the modulation frequency during the second modulation period;
wherein;
the first pulse corresponds to a first pulse width;
the second pulse corresponds to a second pulse width;
the first modulation period corresponds to a first duration; and
the second modulation period corresponds to a second duration;
wherein;
the first pulse width and the second pulse width are different in magnitude; and
the first duration and the second duration are equal in magnitude.
1 Assignment
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Accused Products
Abstract
Systems and methods for dimming control using TRIAC dimmers are provided. An example apparatus for a power conversion system includes: a process-and-drive component configured to receive an input signal and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system. The input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period. The drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period. The process-and-drive component is further configured to: determine the first modulation period for the first input period; change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; determine the second modulation period for the second input period.
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Citations
43 Claims
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1. An apparatus for a power conversion system, the apparatus comprising:
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a process-and-drive component configured to receive an input signal, process information associated with the input signal, and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system; wherein; the input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period; and the drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period; wherein the process-and-drive component is further configured to; determine the first modulation period for the first input period; change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; determine the second modulation period for the second input period; and change the drive signal between the first logic level and the second logic level at the modulation frequency during the second modulation period; wherein; the first pulse corresponds to a first pulse width; the second pulse corresponds to a second pulse width; the first modulation period corresponds to a first duration; and the second modulation period corresponds to a second duration; wherein; the first pulse width and the second pulse width are different in magnitude; and the first duration and the second duration are equal in magnitude. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for a power conversion system, the apparatus comprising:
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a process-and-drive component configured to receive an input signal, process information associated with the input signal, and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system; wherein; the input signal includes one or more input pulses and a first input pulse, the one or more input pulses corresponding to one or more input periods respectively, the first input pulse corresponding to a first input period, the first input period being after the one or more input periods; the drive signal is associated with one or more modulation periods and a first modulation period, the one or more modulation periods corresponding to the one or more input periods respectively, the first modulation period corresponding to the first input period; wherein; the one or more input pulses are associated with one or more pulse widths respectively; the process-and-drive component is further configured to; process information associated with the one or more pulse widths; select a first smallest pulse width from the one or more pulse widths; determine a first duration of the first modulation period based on at least information associated with the first smallest pulse width; and change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22-40. -40. (canceled)
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41. A method for a power conversion system, the method comprising:
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receiving an input signal including a first pulse associated with a first input period and a second pulse associated with a second input period; processing information associated with the input signal; and outputting a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system, the drive signal being associated with a first modulation period for the first input period and a second modulation period for the second input period; wherein the processing information associated with the input signal includes; determining the first modulation period for the first input period; and determining the second modulation period for the second input period; wherein the outputting a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system includes; changing the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; and changing the drive signal between the first logic level and the second logic level at the modulation frequency during the second modulation period; wherein; the first pulse corresponds to a first pulse width; the second pulse corresponds to a second pulse width; the first modulation period corresponds to a first duration; and the second modulation period corresponds to a second duration; wherein; the first pulse width and the second pulse width are different in magnitude; and the first duration and the second duration are equal in magnitude.
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42. A method for a power conversion system, the method comprising:
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receiving an input signal, the input signal including one or more input pulses and a first input pulse, the one or more input pulses corresponding to one or more input periods respectively, the first input pulse corresponding to a first input period, the first input period being after the one or more input periods; processing information associated with the input signal; and outputting a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system, the drive signal being associated with one or more modulation periods and a first modulation period; wherein; the one or more modulation periods correspond to the one or more input periods respectively; the first modulation period corresponds to the first input period; the one or more input pulses are associated with one or more pulse widths respectively; wherein the processing information associated with the input signal includes; processing information associated with the one or more pulse widths; selecting a first smallest pulse width from the one or more pulse widths; and determining a first duration of the first modulation period based on at least information associated with the first smallest pulse width; and wherein the outputting a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system includes changing the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period.
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43-44. -44. (canceled)
Specification