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.

公开(公告)号：US20250167686A1

公开(公告)日：2025-05-22

申请号：US18418378

申请日：2024-01-22

Applicant: I-SHOU UNIVERSITY

Inventor： Chun-An Cheng ,  Wen-Yi Yan ,  Long-Fu Lan ,  Cheng-Kuan Lin ,  Sheng-Hong Hou

IPC: H02M3/335 ,  H05B45/3725

Abstract: A driving circuit for driving an electronic element is provided. The drive circuit includes an inductive coupling circuit, a primary side circuit and a secondary side circuit. The inductive coupling circuit includes a primary winding and a secondary winding. The primary side circuit is electrically connected to an input voltage source, the primary winding and a first terminal of the electronic element. The secondary side circuit is electrically connected to the secondary winding, the primary side circuit and a second terminal of the electronic element. The driving circuit uses an electric energy stored in the primary side circuit and an electric energy stored in the secondary side circuit to drive the electronic element.

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：US10608527B2

公开(公告)日：2020-03-31

申请号：US15995151

申请日：2018-06-01

Applicant: I-SHOU UNIVERSITY

Inventor： Chun-An Cheng ,  Er-Yun Chang ,  Chin-Chih Lai ,  Man-Tang Chang

IPC: H02M1/42 ,  H05B33/08 ,  H02M1/34 ,  H02M1/14 ,  H02M3/335

Abstract: A power supply apparatus for driving a light emitting apparatus is provided. The power supply apparatus includes a lossless snubber circuit and a power converting circuit. The lossless snubber circuit has a first diode, a first inductor and a second diode coupled in series between an input end and a first reference end, and has a first capacitor coupled between the first diode and a second reference end. The power converting circuit has a switch, a transformer and a second indictor. The switch is coupled between the first and second reference ends, and is turned on or off according to a control signal. The second inductor is coupled to a first side of the transformer in parallel.

公开(公告)号：US11660637B2

公开(公告)日：2023-05-30

申请号：US16917873

申请日：2020-06-30

Applicant: I-SHOU UNIVERSITY

Inventor： Chun-An Cheng ,  Hung-Liang Cheng ,  Ya-Jing Chen

IPC: B06B1/02

CPC classification number: B06B1/0223

Abstract: A driving device is provided. The driving device includes a boost inductor and a resonance circuit. The boost inductor receives a first power via a first terminal of the boost inductor in a first mode and provides a second power via a second terminal of the boost inductor. The resonance circuit stores a stored electric energy from the second power in the first mode, so that the boost inductor does not provide the second power in the second mode and drives a transducer by the stored electric energy in the first mode and the second mode.

公开(公告)号：US20210276043A1

公开(公告)日：2021-09-09

申请号：US16917873

申请日：2020-06-30

Applicant: I-SHOU UNIVERSITY

Inventor： Chun-An Cheng ,  Hung-Liang Cheng ,  Ya-Jing Chen

IPC: B06B1/02

Abstract: A driving device is provided. The driving device includes a boost inductor and a resonance circuit. The boost inductor receives a first power via a first terminal of the boost inductor in a first mode and provides a second power via a second terminal of the boost inductor. The resonance circuit stores a stored electric energy from the second power in the first mode, so that the boost inductor does not provide the second power in the second mode and drives a transducer by the stored electric energy in the first mode and the second mode.

公开(公告)号：US09445468B1

公开(公告)日：2016-09-13

申请号：US14861967

申请日：2015-09-22

Applicant: I Shou University

Inventor： Chun-An Cheng ,  Tsung-Yuan Chung

IPC: H05B33/08 ,  H02M3/335

CPC classification number: H05B33/0815 ,  H02M1/4258 ,  Y02B20/346 ,  Y02B70/126

Abstract: A voltage converting device includes an input circuit to rectify an AC input voltage, a voltage converter receiving the rectified input voltage, a specific connection of a switch, an inductor, a capacitor and two discharging diodes coupled between the input circuit and a primary-side winding of the voltage converter, and an output circuit coupled to a secondary-side winding of the voltage converter to output a DC output voltage. Through proper operation of the switch, the AC input voltage may be converted into the DC output voltage.

Abstract translation: 电压转换装置包括用于整流交流输入电压的输入电路，接收整流输入电压的电压转换器，开关，电感器，电容器和耦合在输入电路和初级侧之间的两个放电二极管的特定连接 电压转换器的绕组，以及耦合到电压转换器的次级侧绕组的输出电路，以输出DC输出电压。 通过开关的正确操作，交流输入电压可以转换为直流输出电压。