Ledvance Gmbh

Xia Song

Xusheng Yang

A driver for driving an LED light engine of an LED tube is provided. The driver includes (I) a first driver unit including an input stage for connecting to a power supply, an output stage for connecting to the LED light engine, and a power converter stage for converting input power from AC mains or a CCG (electromagnetic control gear) into an output power for driving the LED light engine and (II) a second driver unit including an input stage for connecting to a power supply, an output stage for connecting to the LED light engine, and a power converter stage for converting input power from an ECG (electronic control gear) into an output power for driving the LED light engine. The two driver units are alternatively activatable for driving the LED light engine depending on when the LED tube is connected to AC mains, a CCG, or an ECG.

Growing community of inventors

Shenzhen, China

Xia Song