Led driver and illumination system related to the same

Abstract

An LED driver for driving a light-emitting device (LED) includes a bridge rectifier, a current driver, and a protection circuit. The bridge rectifier includes a rectifying diode, and the bridge rectifier receives and converts an AC input power source to a DC power source having a DC current and a DC voltage. The current driver includes a constant current source. The bridge rectifier, the current driver, and the protection circuit are connected in series, and the constant current source is used to limit the magnitude of the direct current to drive the LED. The protection circuit includes a protection unit. The protection circuit connects the current driver and the LED. The LED includes a substrate and the rectifying diode, the constant current source, and the protection unit are formed together on the substrate.

Dependencies are inferred from the claim text.