Phase controlled dimming led driver system and method thereof

A phase controlled dimming driver circuitry configured to receive a direct current (DC) signal converted from a regulated alternating current (AC) signal, provided from a phase control dimmer, and to enable dimming the intensity of light generated by a light source that is connected to said phase controlled dimming driver circuitry, comprising:

• a) a phase decode stage configured to decode a phase of said rectified DC signal, giving rise to the decoded phase, said phase representing a required light dimming level of said light source;
• b) a pulse width modulation (PWM) generation stage configured to generate a PWM signal to be provided to said light source, said PWM signal having duty cycle set according to said decoded phase;
• c) a flyback converter stage configured to receive said rectified DC voltage signal from said input stage and to generate a regulated DC voltage on a constant voltage capacitor, which is connected to the output of said flyback converter stage, for enabling maintaining substantially constant voltage on said light source;
• and
• d) an output stage configured to receive said PWM signal from said PWM generation stage and to output a corresponding signal to said light source, wherein said corresponding signal is both pulse width modulated and amplitude modulated for enabling dimming the light intensity of said light source, said pulse width modulation applied to said light source at a frequency substantially unrelated to the frequency of said regulated AC signal provided from said phase control dimmer.

A system configured to control dimming of the light source intensity, said system comprising:

• a) a light source for generating light;
• b) a phase control dimmer configured to receive an alternating current (AC) power line signal and to output a regulated AC signal;
• and
• c) a phase controlled dimming driver circuitry configured to receive said regulated AC signal and to control dimming of said light source, wherein said phase controlled dimming driver circuitry does not include a microprocessor and pulse width modulates its output current provided to said light source at a frequency unrelated to the AC power line frequency.

A system configured to control dimming of the light source intensity, said system comprising:

• a) a light source for generating light;
• b) a phase control dimmer configured to receive an alternating current (AC) power line signal and to output a regulated AC signal;
• and
• c) a phase controlled dimming driver circuitry configured to receive said regulated AC signal and to control dimming of said light source, wherein said phase controlled dimming driver circuitry does not include a microprocessor and applies amplitude modulation (AM) and pulse width modulation (PWM) substantially simultaneously to the output current provided to said light source.

A system configured to control dimming of the light source intensity, said system comprising:

• a) a light source for generating light;
• b) a TRIAC (TRIode for Alternating Current) dimmer configured to receive an alternating current (AC) power line signal and to output a regulated AC signal;
• and
• c) a phase controlled dimming driver circuitry configured to receive said regulated AC signal and to control dimming of said light source, wherein said phase controlled dimming driver circuitry comprises a power dissipating load that is gradually activated as its output current is reduced for enabling a substantially stable operation of said TRIAC unit provided within said phase control TRIAC dimmer.

A system configured to control dimming of the light source intensity, said system comprising:

• a) a light source for generating light;
• b) a phase control dimmer configured to receive an alternating current (AC) power line signal and to output a regulated AC signal;
• and
• c) a phase controlled dimming driver circuitry configured to receive said regulated AC signal and to control dimming of said light source, wherein as the voltage provided from said phase control dimmer to said phase controlled dimming driver circuitry is reduced, the output light source current becomes substantially constant, and the light generated by said light source dims substantially linearly until a predefined level.

A method of receiving a regulated alternating current (AC) signal from a phase control dimmer and enabling dimming intensity of light generated by a light source, said method comprising:

• a) receiving a regulated AC signal and outputting a rectified direct current (DC) signal;
• b) decoding a phase of said rectified DC signal, giving rise to the decoded phase, said phase representing a required light dimming level of said light source;
• c) generating a pulse width modulation (PWM) signal to be provided to said light source, said PWM signal having duty cycle set according to said decoded phase;
• d) receiving said rectified DC voltage signal from said input stage and generating a regulated DC voltage on a constant voltage capacitor for enabling maintaining substantially constant voltage on said light source;
• and
• e) receiving said PWM signal and outputting a corresponding signal to said light source, wherein said corresponding signal is both pulse width modulated and amplitude modulated for enabling dimming the light intensity of said light source, said pulse width modulation applied to said light source at a frequency substantially unrelated to the frequency of said regulated AC signal provided from said phase control dimmer.

A method of receiving a direct current (DC) signal converted from a regulated alternating current (AC) signal, provided from a phase control dimmer, and enabling dimming intensity of light generated by a light source that is connected to said phase controlled dimming driver circuitry, said method comprising:

• a) decoding a phase of said rectified DC signal, giving rise to the decoded phase, said phase representing a required light dimming level of said light source;
• b) generating a pulse width modulation (PWM) signal to be provided to said light source, said PWM signal having duty cycle set according to said decoded phase;
• c) receiving said rectified DC voltage signal from said input stage and generating a regulated DC voltage on a constant voltage capacitor for enabling maintaining substantially constant voltage on said light source;
• and
• d) receiving said PWM signal and outputting a corresponding signal to said light source, wherein said corresponding signal is both pulse width modulated and amplitude modulated for enabling dimming the light intensity of said light source, said pulse width modulation applied to said light source at a frequency substantially unrelated to the frequency of said regulated AC signal provided from said phase control dimmer.