Abstract: A method of driving a light source by a light driver includes determining a dimming value based on an input from a phase-cut dimmer at the input of the light driver, determining an offset for a dimmer transfer function of the light driver based on the dimming value and a minimum set point of the dimmer transfer function, applying the offset to the dimmer transfer function of the light driver to generate an adjusted dimmer transfer function, and determining a target light output of the light source based on the dimming value and the adjusted dimmer transfer function.

Abstract: A lighting system includes a converter configured to receive a rectified input voltage and to generate an output voltage based on a control signal; a primary controller configured to generate the control signal to adjust the output voltage of the converter; and a startup circuit configured to power the primary controller based on the rectified input voltage in response to the output voltage being below a threshold, and to power the primary controller based on the output voltage in response to the output voltage being greater than or equal to the threshold.

Abstract: A light driver includes a converter configured to generate a drive signal for driving an output load based on a rectified input signal; a regulator coupled between the converter and the output load, and configured to generate a regulated signal based on the drive signal; a secondary controller configured to detect a voltage of the regulator, to generate a first feedback signal to dynamically control a DC-level of the drive signal based on the voltage of the regulator, and to generate a second feedback signal for controlling a DC-level of the regulated signal.

Abstract: A light driver includes a pulse generator circuit configured to generate a pulsed signal based on a rectified input line voltage, a dimming detection circuit configured to determine whether phase-cut dimming is present at an input of the light driver based on the pulsed signal and to generate a phase-cut detection signal, and an input selection circuit configured to apply a first voltage or a second voltage to a reference input of a power factor correction (PFC) circuit of the light driver based on the phase-cut detection signal.

Abstract: A light driver includes a converter configured to generate a drive signal for powering a light source based on a control signal, a modular controller board electrically coupled to a sensor board and configured to receive sensor data from the sensor board and to generate a first sensor control signal corresponding to the sensor data, and a primary controller configured to control the converter by generating the control signal based on the first sensor control signal.

Abstract: A method of controlling a light driver includes determining, by a secondary controller of the light driver, an actual voltage drop across a regulator of the light driver; determining, by the secondary controller, a target voltage drop of the regulator; calculating, by the secondary controller, a theoretical input voltage of the regulator based on the target voltage drop and an output voltage of the regulator; determining, by the secondary controller, whether the theoretical input voltage is within a first range; and in response to determining that the theoretical input voltage is within the first range, generating, by the secondary controller, a first feedback signal for transmission to a primary controller of the light driver based on the target voltage drop and the actual voltage drop.

Abstract: A lighting system includes a converter configured to receive a rectified input voltage and to generate an output voltage based on a gate control signal; a PFC controller including a zero-crossing input, and configured to generate the gate control signal to adjust the output voltage of the converter based on a zero-crossing voltage at the zero-crossing input; a zero-crossing delay circuit coupled between an output of the converter and the zero-crossing input, and configured to slow a rate of change of the zero-crossing voltage based on one or more delay control signals; and a channel controller configured to identify a low-load state of the lighting system, and, in response, to generate the one or more delay control signals.

Abstract: A multi-channel power supply system including a power supply circuit configured to generate a drive signal for powering a plurality of color channels based on an input power signal, a first current control circuit coupled to a first color channel of the plurality of color channels and configured to adjust a first channel current of the first color channel based on the drive signal and a first reference signal, and a channel controller configured generate the first reference signal based on a color temperature according to a black body curve.

Abstract: A programming device includes a plurality of signal lines including a first signal line and a common ground line, and a first programming circuit coupled between the first signal line and the common ground line, and including a first configurable switch configured to receive a first switch configuration, the first programming circuit being configured to receive a first power signal from the first signal line and to supply a first programming signal to the first signal line, the first programming signal having a level corresponding to the first switch configuration.

Abstract: A programmable lighting system includes a plurality of color channels configured to generate light of different colors, and a light driver configured to drive the plurality of color channels according to a dimmer setting and a correlated color temperature (CCT) setting, and to maintain a constant maximum lumen output across a range of CCT values based on a dim-stop limit.

Abstract: An integrated multi-layered lighting system includes a first board having a first component area and a first light area, a second board coupled to and offset from the first board, the second board having a first opening overlapping the first light area of the first board in a plan view, and a second component area overlapping the first component area of the first board in a plan view, a plurality of light emitting diodes (LEDs) coupled to the first board and positioned in the first light area corresponding to the first opening of the second board, and a light driver configured to drive the plurality of LEDs and including a plurality of first components coupled to the first board and positioned in the first component area and a plurality of second components coupled to the second board and positioned in the second component area.

Abstract: A sensor board includes a plurality of sensors configured to sense parameters from the environment and to generate sensory outputs, a transmission circuit configured to receive sensory output from the plurality of sensors and to generate sensor data for transmission to a light driver through a wired connection, and a regulator configured to receive a variable input voltage and to generate a regulated voltage for powering the plurality of sensors and the transmission circuit.

Abstract: A programmable lighting system includes a plurality of color channels configured to generate light of different colors, and a light driver configured to drive the plurality of color channels according to a dimmer setting and a correlated color temperature (CCT) setting, and to maintain a constant maximum lumen output across a range of CCT values based on a dim-stop limit.

Abstract: A light driver includes a pulse generator circuit configured to generate a pulsed signal based on a rectified input line voltage, a dimming detection circuit configured to determine whether phase-cut dimming is present at an input of the light driver based on the pulsed signal and to generate a phase-cut detection signal, and an input selection circuit configured to apply a first voltage or a second voltage to a reference input of a power factor correction (PFC) circuit of the light driver based on the phase-cut detection signal.

Abstract: A method of driving a light source by a light driver includes measuring a current output signal of the light driver, calculating a percent change in output signal, determining whether the percent change in output signal is greater than or equal to a first threshold, and in response to determining that the percent change in the output signal is greater than or equal to the first threshold, calculating a percent change in reference voltage based on a current reference voltage and a previous reference voltage, determining whether the percent change in reference voltage is less than a second threshold, and in response to determining that the percent change in reference voltage is less than the second threshold, deactivating filtering and averaging of a dimmer signal received from a dimmer for a period of time, and reactivating the filtering and the averaging of the dimmer signal.

Abstract: A method of initiating power-on of a light driver for driving a light source, the method including retrieving a stored load voltage of the light driver from a memory, determining a turn-on delay based on the stored load voltage, stalling power-on of the light driver for a period of time equal to the turn-on delay, initiating startup of the light driver based on the stored load voltage, determining whether current is flowing to the light source, in response to determining that current is flowing to the light source, measuring a load voltage of the light driver, and storing the load voltage in the memory.

Abstract: A multi-channel power supply system including a power supply circuit configured to generate a drive signal for powering a plurality of color channels based on an input power signal, a first current control circuit coupled to a first color channel of the plurality of color channels and configured to adjust a first channel current of the first color channel based on the drive signal and a first reference signal, and a channel controller configured generate the first reference signal based on a color temperature according to a black body curve.

Abstract: A light driver includes a converter configured to generate a drive signal for powering a light source based on a control signal, a modular controller board electrically coupled to a sensor board and configured to receive sensor data from the sensor board and to generate a first sensor control signal corresponding to the sensor data, and a primary controller configured to control the converter by generating the control signal based on the first sensor control signal.

Abstract: An integrated multi-layered lighting system includes a first board having a first component area and a first light area, a second board coupled to and offset from the first board, the second board having a first opening overlapping the first light area of the first board in a plan view, and a second component area overlapping the first component area of the first board in a plan view, a plurality of light emitting diodes (LEDs) coupled to the first board and positioned in the first light area corresponding to the first opening of the second board, and a light driver configured to drive the plurality of LEDs and including a plurality of first components coupled to the first board and positioned in the first component area and a plurality of second components coupled to the second board and positioned in the second component area.

Abstract: A multi-channel power supply system includes a power supply circuit configured to generate a drive signal for powering a plurality of color channels based on an input power signal, a channel controller configured to generate a first pulse width modulated (PWM) signal for controlling an output light intensity of a first color channel of the plurality of color channels, a filter circuit configured to generate a first pseudo-sawtooth signal based on the first PWM signal, and a first current control circuit coupled to a first color channel of the plurality of color channels and configured to adjust a first channel current of the first color channel based on the drive signal and the first pseudo-sawtooth signal.