Ledvance Gmbh

Kaichun Huang

Xusheng Yang

The LED driving circuit includes: a detecting circuit that detects whether an input current of the driving circuit is low or high frequency; a first stage converter that converts the input of the driving circuit to provide a DC power suitable for the LED; a first feedback loop that is activated by a low frequency current, to convert a current from a LED load to a feedback voltage and feed it back to the first stage converter, wherein in the first feedback loop, the feedback voltage changes as a function of the current of the LED load; and a second feedback loop that is activated by high frequency current, to convert the current from the LED load to the feedback voltage and feed it back to the first stage converter, wherein in the second feedback loop, the feedback voltage changes as a function of the current of the LED load.

Growing community of inventors

Shenzhen, China

Kaichun Huang