公开(公告)号：US10674584B2

公开(公告)日：2020-06-02

申请号：US16145217

申请日：2018-09-28

Applicant: I-SHOU UNIVERSITY

Inventor： Chun-An Cheng ,  Chin-Chih Lai ,  Yi-Ling Chen ,  Pei-Jung Hsieh

IPC: H05B33/08 ,  H02M1/34 ,  F21V23/00 ,  H05B45/37 ,  F21Y115/10

Abstract: A lighting system and a driving circuit thereof are provided. The driving circuit is configured to drive a light emitting device. The driving circuit includes a bulk voltage converter. The bulk voltage converter receives an input voltage and converts the input voltage to generate a driving voltage. The bulk voltage converter includes a snubber circuit, a power switch, and an inductor. The snubber circuit receives the input voltage through a first node and generates a snubber voltage at a second node according to the input voltage. The power switch is turned on or off according to a control signal. The inductor is coupled between the first node and a third node. The driving circuit is coupled to the light emitting device through the first node and the third node and provides the driving voltage to the light emitting device.

公开(公告)号：US20190380179A1

公开(公告)日：2019-12-12

申请号：US16145217

申请日：2018-09-28

Applicant: I-SHOU UNIVERSITY

Inventor： Chun-An Cheng ,  Chin-Chih Lai ,  Yi-Ling Chen ,  Pei-Jung Hsieh

IPC: H05B33/08 ,  H02M1/34 ,  F21V23/00

Abstract: A lighting system and a driving circuit thereof are provided. The driving circuit is configured to drive a light emitting device. The driving circuit includes a bulk voltage converter. The bulk voltage converter receives an input voltage and converts the input voltage to generate a driving voltage. The bulk voltage converter includes a snubber circuit, a power switch, and an inductor. The snubber circuit receives the input voltage through a first node and generates a snubber voltage at a second node according to the input voltage. The power switch is turned on or off according to a control signal. The inductor is coupled between the first node and a third node. The driving circuit is coupled to the light emitting device through the first node and the third node and provides the driving voltage to the light emitting device.