公开(公告)号：US10862400B2

公开(公告)日：2020-12-08

申请号：US16384963

申请日：2019-04-16

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chia-Jung Nian ,  Chih-Kai Su

IPC: H02M3/335 ,  H02M1/08

Abstract: A power switching circuit includes a transformer, a rectifying unit, a first switching unit, a second switching unit and a feedback unit. The transformer includes a central-tapped terminal. The transformer is configured to output a first power signal. The rectifying unit is coupled to the transformer. The rectifying unit receives the first power signal and outputs a second power signal to a load. The first switching unit is coupled to the central-tapped terminal of the transformer. The second switching unit is coupled to the rectifying unit and the first switching unit. The feedback unit is configured to receive the second power signal and control the first switching unit and the second switching unit.

公开(公告)号：US09351379B2

公开(公告)日：2016-05-24

申请号：US14587753

申请日：2014-12-31

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chia-Jung Nian ,  Ching-Ho Chou

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B37/0263 ,  H05B33/0809 ,  H05B33/0815 ,  H05B33/0821 ,  H05B33/0845 ,  H05B33/0851

Abstract: An integrated light-emitting diode (LED) driver circuit includes a bi-directional power line communication (PLC) unit, a power conversion module, and a constant current (CC)/constant voltage (CV) control unit. The bi-directional PLC unit receives an AC voltage, and converts a modulation signal on the AC voltage to generate a light-dimming control signal. The power conversion module receives the AC voltage and converts the AC voltage to generate an output voltage. The CC/CV control unit receives the light-dimming control signal to generate a dimming constant current or a dimming constant voltage. The integrated LED driver circuit outputs the dimming constant current or the dimming constant voltage and the output voltage to drive a LED string.

Abstract translation: 集成发光二极管（LED）驱动电路包括双向电力线通信（PLC）单元，功率转换模块和恒定电流（CC）/恒定电压（CV）控制单元。 双向PLC单元接收交流电压，并且对交流电压上的调制信号进行转换，生成调光控制信号。 电力转换模块接收交流电压并转换交流电压以产生输出电压。 CC / CV控制单元接收调光控制信号以产生调光恒定电流或调光恒定电压。 集成LED驱动电路输出调光恒流或调光恒定电压和输出电压驱动LED串。

公开(公告)号：US11122661B2

公开(公告)日：2021-09-14

申请号：US16560956

申请日：2019-09-04

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chia-Jung Nian ,  Wei-Cheng Chiu

IPC: H05B45/37 ,  H05B45/10

Abstract: A driver for driving a load unit includes a conversion circuit, a bypass circuit and control circuit. The conversion circuit is configured for converting an input voltage into an output voltage, in which the load unit is coupled to the conversion circuit to receive the output voltage and an output current. The bypass circuit is electrically coupled to the conversion circuit and the load unit. The control circuit controls the output current to flow through the load unit to drive the load unit in a driving mode. The control circuit controls the output current to flow through the bypass circuit in a standby mode, in which the output current in the standby mode is lower than the output current in the driving mode.