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;
wherein the process-and-drive component includes;
a reference signal generator configured to receive the input signal and generate a reference signal based on at least information associated with the input signal;
an error amplifier configured to receive the reference signal and a current sensing signal and generate an amplified signal based on at least information associated with the reference signal and the current sensing signal;
a modulation component configured to generate a modulation signal based on at least information associated with the amplified signal; and
a drive component configured to generate the drive signal based on at least information associated with the modulation signal.
1 Assignment
0 Petitions
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.
-
Citations
23 Claims
-
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; wherein the process-and-drive component includes; a reference signal generator configured to receive the input signal and generate a reference signal based on at least information associated with the input signal; an error amplifier configured to receive the reference signal and a current sensing signal and generate an amplified signal based on at least information associated with the reference signal and the current sensing signal; a modulation component configured to generate a modulation signal based on at least information associated with the amplified signal; and a drive component configured to generate the drive signal based on at least information associated with the modulation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. 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 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; and 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; and 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; wherein the process-and-drive component is further configured to; detect one or more phase angles associated with the one or more input pulses; store the one or more phase angles into a queue; select a smallest phase angle from the one or more phase angles, the smallest phase angle corresponding to the first smallest pulse width; and determine the first duration based on at least information associated with the smallest phase angle. - View Dependent Claims (11, 12, 13)
-
-
14. 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 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; and 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; and 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; wherein the process-and-drive component includes; a reference signal generator configured to receive the input signal and generate a reference signal based on at least information associated with the input signal; an error amplifier configured to receive the reference signal and a current sensing signal and generate an amplified signal based on at least information associated with the reference signal and the current sensing signal; a modulation component configured to generate a modulation signal based on at least information associated with the amplified signal; and a drive component configured to generate the drive signal based on at least information associated with the modulation signal. - View Dependent Claims (15, 16, 17, 18)
-
-
19. 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 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; and 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; and 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; wherein; the input signal includes a second input pulse, the second input pulse corresponding to a second input period, the second input period being after the first input period; the drive signal is associated with a second modulation period, the second modulation period corresponding to the second input period; and the process-and-drive component is further configured to; process information associated with the one or more pulse widths and the first pulse width; select a second smallest pulse width from the one or more pulse widths and the first pulse width; determine a second duration of the second modulation period based on at least information associated with the second smallest pulse width; and change the drive signal between the first logic level and the second logic level at a modulation frequency during the second modulation period.
-
-
20. A method for a power conversion system, the method comprising:
-
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; wherein the processing information associated with the input signal further includes; generating a reference signal based on at least information associated with the input signal; receiving the reference signal and a current sensing signal; generating an amplified signal based on at least information associated with the reference signal and the current sensing signal; and generating a modulation signal based on at least information associated with the amplified signal; wherein the outputting a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system further includes generating the drive signal based on at least information associated with the modulation signal.
-
-
21. A method for a power conversion system, the method comprising:
-
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; and 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; 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; wherein the processing information associated with the one or more pulse widths includes; detecting one or more phase angles associated with the one or more input pulses; and storing the one or more phase angles into a queue; wherein the selecting a first smallest pulse width from the one or more pulse widths includes selecting a smallest phase angle from the one or more phase angles, the smallest phase angle corresponding to the first smallest pulse width; wherein the determining a first duration of the first modulation period based on at least information associated with the first smallest pulse width includes determining the first duration based on at least information associated with the smallest phase angle.
-
-
22. A method for a power conversion system, the method comprising:
-
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; and 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; 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; wherein the processing information associated with the input signal further includes; generating a reference signal based on at least information associated with the input signal; receiving the reference signal and a current sensing signal; generating an amplified signal based on at least information associated with the reference signal and the current sensing signal; and generating a modulation signal based on at least information associated with the amplified signal; wherein the outputting a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system further includes generating the drive signal based on at least information associated with the modulation signal.
-
-
23. A method for a power conversion system, the method comprising:
-
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; and 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; 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; wherein; the input signal includes a second input pulse, the second input pulse corresponding to a second input period, the second input period being after the first input period; and the drive signal is associated with a second modulation period, the second modulation period corresponding to the second input period;
wherein the processing information associated with the input signal further includes;processing information associated with the one or more pulse widths and the first pulse width; selecting a second smallest pulse width from the one or more pulse widths and the first pulse width; and determining a second duration of the second modulation period based on at least information associated with the second smallest pulse width; wherein the outputting a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system further includes changing the drive signal between the first logic level and the second logic level at a modulation frequency during the second modulation period.
-
Specification