DRIVER FOR LED LIGHTING FIXTURE Russian patent published in 2021 - IPC H05B45/325 

FIELD: electricity.

SUBSTANCE: present invention relates to power supply devices for LED lamps, in particular to electronic pulse drivers for LED lighting fixtures for use in lighting, and in particular to three-phase drivers using power from a three-phase alternating current network. Driver for a LED lamp powered by a three-phase alternating current network includes a board on which a rectifier, an in-phase electromagnetic compatibility filter, an output current stabilization unit and a current sensor are installed. Driver comprises a pulse noise protection assembly, a differential electromagnetic compatibility filter, a three-phase full-wave rectifier, an auxiliary low-voltage power supply and alight-emitting diode module, wherein the output current stabilization unit consists of a power switch, a power ultra-fast diode, a power throttle, a current sensor and a PWM controller. PWM controller has output for control of power transistor and input, to which voltage is supplied from current sensor, and current sensor is connected in series with throttle. Auxiliary low-voltage power supply is made in the form of a microcircuit with an integrated transistor and a current sensor and is equipped with a linear voltage stabilizer. Host protection against impulse noise, common mode filter EMC, three-phase full-wave rectifier, a differential filter and block electromagnetic compatibility stabilizing the output current connected in series and the low-voltage auxiliary power supply unit is connected in parallel with input current stabilization.

EFFECT: technical result of disclosed invention is higher reliability and service life of driver, as well as power supply of light-emitting diodes to specified constant in average current from driver operating from three-phase alternating current network, and not depending on supply circuit voltage.

3 cl, 5 dwg