| 摘要 |
<p>An LED power supply device comprises a rectifier for rectifying AC power; an electricity control processor which is synchronized with an AC cycle of the AC power to generate a power factor compensating PWM signal for compensating a power factor and generates a plurality of electricity controlling PWM signals for adjusting an output voltage based on an output setting voltage; a communication processor for transferring, to the electricity control processor, a control command generated by monitoring the control command and an electricity supply operation received from an external device and controlling the electricity control processor; a PFC unit for compensating the power factor according to the power factor compensating PWM signal; a DC/DC converter for pressurizing the power factor compensated voltage; an LLC resonating converter for converting the pressurized voltage to be outputted according to a first PWM signal generated based on the output setting voltage among the electricity controlling PWM signals; a voltage processing unit for detecting the output voltage of the LLC resonating converter and supplying, to the electricity control processor, an output voltage detection signal generated by using a second PWM signal for stabilizing the output voltage among the detected output voltage and the electricity controlling PWM signals; and a current processing unit for detecting an output current outputted to an LED lighting device and adjusting the output current according a third PWM signal for stabilizing the output current among the electricity controlling PWM signals. [Reference numerals] (10) AC power; (110) Electricity control processor; (112) Communications processor; (120) First noise filter; (130) Rectifier; (140) Second noise filter; (150) PFC unit; (160) DC/DC converter; (170) LLC resonating converter; (180) Voltage processing unit; (190) Current processing unit; (20) LED lighting device; (30) Superordinate system; (40) Detection device</p> |
