POWER SUPPLY APPARATUS FOR LED LIGHTING AND LED LIGHTING APPARATUS USING THE POWER SUPPLY APPARATUS

摘要

Disclosed are a power supply apparatus for an LED lighting and an LED lighting apparatus using the power supply apparatus. The LED lighting apparatus includes a power source unit configured to supply a rectified voltage, a voltage converter configured to include at least one first inductor and to convert the rectified voltage, an auxiliary coil configured to include a second inductor and to supply a detection voltage corresponding to the current of the first inductor of the voltage converter, a controller configured to control the current of the voltage converter using a driving pulse generated in response to a control signal and a sensing voltage, and a voltage regulation circuit configured to regulate the detection voltage and to supply the regulated voltage as an operating voltage for the controller.

主权项

1. A power supply apparatus for an LED lighting, comprising:
a power source unit configured to supply a rectified voltage; a voltage converter configured to comprise at least one first inductor and to convert the rectified voltage; an auxiliary coil configured to comprise a second inductor and to supply a detection voltage corresponding to current of the first inductor of the voltage converter; a controller configured to control current of the voltage converter using a driving pulse generated in response to a control signal and a sensing voltage; and a voltage regulation circuit configured to regulate the detection voltage and to supply the regulated voltage as an operating voltage for the controller, wherein the control signal controls a dimming of an LED lighting, and the sensing voltage is voltage fed back after sensing the current of the voltage converter.