Disclosed is an integrated multifunctional drive power supply for an LED lamp, including a drive power supply housing in which a main control panel is arranged and includes a drive power supply module, a dimming module, and a color temperature regulation module, wherein an MCU processor is arranged in the drive power supply module; a dimming signal interface of the dimming module is connected with a dimming port of the drive power supply module; a dimming signal output end of the dimming module is connected with a dimming power signal input end of the LED lamp; a color temperature regulation signal interface of the color temperature regulation module is connected with an LED output port of the drive power supply module; and a color temperature signal output end of the color temperature regulation module is connected with a color temperature regulation signal receiving end of the LED lamp.

A motor vehicle lighting system includes a light source, a multi-phase interleaved power converter having a plurality of selectively activatable elementary converters, each of which is configured to generate an electrical signal having its own phase. The power converter is designed to supply electrical power to the light source, and controller is designed to selectively control each of the elementary converters of the power converter. The controller is designed to receive an emission command for the emission of a desired light beam by the light source and to activate a strictly necessary number of elementary converters of the power converter such that the power converter supplies, to the light source, an electrical power needed to emit the desired light beam.

A motor vehicle lighting system includes a light source, a multi-phase interleaved power converter having a plurality of selectively activatable elementary converters, each of which is configured to generate an electrical signal having its own phase. The power converter is designed to supply electrical power to the light source, and controller is designed to selectively control each of the elementary converters of the power converter. The controller is designed to receive an emission command for the emission of a desired light beam by the light source and to activate a strictly necessary number of elementary converters of the power converter such that the power converter supplies, to the light source, an electrical power needed to emit the desired light beam.

A driving circuit is provided in this present disclosure, the driving circuit includes a voltage input module, a quick start module and a control module. The voltage input module includes a first input terminal and a second input terminal and is configured to receive an alternating current voltage and convert the alternating current voltage into a direct current voltage. The quick start module is coupled to the voltage input module and configured to receive the direct current voltage and convert the direct current voltage into a startup voltage. The control module is coupled to the quick start module and configured to receive the startup voltage and control a load, wherein the quick start module comprises a first resistor and a second resistor connected in series and is coupled between the first input terminal and the control module.

A driving circuit is provided in this present disclosure, the driving circuit includes a voltage input module, a quick start module and a control module. The voltage input module includes a first input terminal and a second input terminal and is configured to receive an alternating current voltage and convert the alternating current voltage into a direct current voltage. The quick start module is coupled to the voltage input module and configured to receive the direct current voltage and convert the direct current voltage into a startup voltage. The control module is coupled to the quick start module and configured to receive the startup voltage and control a load, wherein the quick start module comprises a first resistor and a second resistor connected in series and is coupled between the first input terminal and the control module.

An LED driver for an LED lamp, which also comprises an LED load. The LED driver is adapted to connect to an input source at a first and second terminal. The LED driver comprises a switching arrangement configured to enable a controller to control at least a magnitude and phase of the voltage between the first and second terminals. The phase of the voltage between the first and second terminals may be defined to control an amount of power that flows from the input source to power the LED lamp.

An LED driver for an LED lamp, which also comprises an LED load. The LED driver is adapted to connect to an input source at a first and second terminal. The LED driver comprises a switching arrangement configured to enable a controller to control at least a magnitude and phase of the voltage between the first and second terminals. The phase of the voltage between the first and second terminals may be defined to control an amount of power that flows from the input source to power the LED lamp.

An LED tube lamp with overvoltage protection capability is provided. The LED tube lamp includes a lamp tube, two external connection terminals, a rectifying circuit, a filtering circuit, an LED module, and a protection circuit. The protection circuit is coupled between two input terminals of the LED module and configured to perform overvoltage protection when determining that a voltage level between the two input terminals of the LED module reaches or is higher than a predefined voltage value, wherein the protection circuit includes a diode and the predefined voltage value is in a range of about 40V to about 600V.

An LED tube lamp with overvoltage protection capability is provided. The LED tube lamp includes a lamp tube, two external connection terminals, a rectifying circuit, a filtering circuit, an LED module, and a protection circuit. The protection circuit is coupled between two input terminals of the LED module and configured to perform overvoltage protection when determining that a voltage level between the two input terminals of the LED module reaches or is higher than a predefined voltage value, wherein the protection circuit includes a diode and the predefined voltage value is in a range of about 40V to about 600V.

A load regulation device for controlling the amount of power delivered to an electrical load may be able to calibrate the magnitude of an output voltage of the load regulation device in order to control the magnitude of a load voltage across the electrical load to a predetermined level. The load regulation device may receive the feedback from a calibration device adapted to be coupled to load wiring near the electrical load. The feedback may indicate when the magnitude of the load voltage across the electrical load has reached a predetermined level. The load regulation device may gradually adjust the magnitude of the output voltage, receive the feedback from the calibration device, and then use the feedback to determine the magnitude of the output voltage corresponding to when the magnitude of the load voltage across the electrical load has reached the predetermined level.