Richtek Technology Corporation

Adi Optics

Chih-Wei Tseng

Yi Chun Chen

Ko-Cheng Wang

Kuo-Ping Liu

Chuan-Kao Wei

Tzu-Tse Huang

Yi-Ren Lin

The present disclosure provides an illumination structure and a light distributing method. The illumination structure includes a substrate, a first light emitting element, a second light emitting element, a reflection housing and a hooding board. The reflection housing has a first focal point and a second focal point. The first light emitting element is disposed on the substrate and located at the first focal point of the reflection housing. The second focal point is positioned within the hooding board. Therefore, a portion of light emitted by the first light emitting element will be reflected by the reflection housing and pass through a hollow portion of the hooding board to generate low beam light.

Illumination structure and light distributing method for the illumination structure

A PWM controller and control method for a DC-DC voltage converter filter the high-frequency component of the voltage at the phase node between high-side and low-side elements of the voltage converter to generate a signal synchronous and in phase or out-of-phase with the inductor current of the voltage converter, to achieve a low-ripple output voltage and stable loop control.

PWM controller and control method for a DC-DC voltage converter

Growing community of inventors

Taipei, Taiwan

Chih-Wei Tseng