公开(公告)号：US09167645B1

公开(公告)日：2015-10-20

申请号：US14621697

申请日：2015-02-13

Applicant: UNITY OPTO TECHNOLOGY CO., LTD.

Inventor： Chih-Hsien Wu ,  Wei Chang ,  Huan-Ying Lu ,  Kai-Cheng Chuang ,  Che-Hao Kuo

IPC: H05B33/08 ,  H05B41/282

CPC classification number: H05B33/0815 ,  H05B33/0845 ,  H05B33/0851 ,  H05B41/2828

Abstract: A driver circuit adopting a primary side regulating architecture and an isolation transformer for improving LED flickers includes a transformer, a primary side regulating module, a feedback portion, a driving module and a dimming portion. The transformer includes an input coil, an auxiliary coil, a driving coil, and a dimming coil. The primary side regulating module is electrically coupled to the input coil; the feedback portion is electrically coupled to the auxiliary coil and the primary side regulating module; the driving module is electrically coupled to the driving coil; the dimming portion is electrically coupled to the dimming coil and the driving module. When a dimming signal inputted to the dimming portion has a voltage of 1V-10V, and the driver circuit is applied to a panel light, the LED flicker is improved effectively.

Abstract translation: 采用初级侧调节架构的驱动电路和用于改善LED闪烁的隔离变压器包括变压器，初级侧调节模块，反馈部分，驱动模块和调光部分。 变压器包括输入线圈，辅助线圈，驱动线圈和调光线圈。 初级侧调节模块电耦合到输入线圈; 反馈部分电耦合到辅助线圈和初级侧调节模块; 驱动模块电耦合到驱动线圈; 调光部分电耦合到调光线圈和驱动模块。 当输入到调光部分的调光信号具有1V-10V的电压，并且将驱动电路施加到面板灯时，有效地提高LED闪烁。

公开(公告)号：US09674908B1

公开(公告)日：2017-06-06

申请号：US15358612

申请日：2016-11-22

Applicant: UNITY OPTO TECHNOLOGY CO., LTD.

Inventor： Chih-Hsien Wu ,  Wei Chang ,  Kai-Cheng Chuang ,  Sheng-Wei Chen ,  Che-Hao Kuo

IPC: H05B37/00 ,  H05B33/08 ,  H02M1/42 ,  H02M1/14 ,  H02M1/44

CPC classification number: H05B33/0815 ,  H02M1/14 ,  H02M1/42 ,  H02M1/44 ,  H05B33/0818

Abstract: A secondary-side bucking and current-stabilizing flyback power converter adopts a dual-stage isolated circuit architecture and outputs a constant output current to drive a low-power LED module, and its primary stage adopts a flyback circuit architecture with a primary regulated voltage, and its secondary stage adopts of a buck circuit architecture of the current stabilizer, so that after the primary stage converts the constant voltage, the current stabilizer senses the load effect of the output current at the LED module to regulate the output cycle and maintain the total output of the output current constant and reduce the ripple amplitude, so as to achieve a non-strobe output result and improve the illumination effect of the LED module.