公开(公告)号：US09494961B2

公开(公告)日：2016-11-15

申请号：US14818314

申请日：2015-08-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Min-Chieh Hsu ,  Wen-Hsin Cheng

IPC: H05B41/282 ,  G05F1/575 ,  H05B33/08 ,  H02M3/157 ,  H02M3/158 ,  F21S4/00

CPC classification number: G05F1/575 ,  H05B33/0812 ,  H05B33/0851

Abstract: A feedback device for a constant current driver controls a power supply module in the constant current driver to generate an output voltage. The constant current driver drives an electrical load with an output current. The feedback device includes a feedback control module and a feedback output unit. The feedback control module is utilized for receiving a load driven voltage related to the electrical load and generating a control voltage accordingly. The feedback output unit is utilized for generating a feedback current via an equivalent resistor of the feedback output unit according to a voltage difference between the control voltage and a feedback voltage of the power supply module. The power supply module controls the magnitude of the output voltage according to the feedback current, allowing the constant current driver to drive the electrical load with the output current.

Abstract translation: 用于恒流驱动器的反馈装置控制恒流驱动器中的电源模块以产生输出电压。 恒流驱动器通过输出电流驱动电气负载。 反馈装置包括反馈控制模块和反馈输出单元。 反馈控制模块用于接收与电负载相关的负载驱动电压并相应地产生控制电压。 反馈输出单元用于根据控制电压和电源模块的反馈电压之间的电压差，经由反馈输出单元的等效电阻产生反馈电流。 电源模块根据反馈电流控制输出电压的大小，允许恒流驱动器以输出电流驱动电气负载。

公开(公告)号：US20160239030A1

公开(公告)日：2016-08-18

申请号：US14818314

申请日：2015-08-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Min-Chieh Hsu ,  Wen-Hsin Cheng

IPC: G05F1/575 ,  H05B33/08

CPC classification number: G05F1/575 ,  H05B33/0812 ,  H05B33/0851

Abstract: A feedback device for a constant current driver controls a power supply module in the constant current driver to generate an output voltage. The constant current driver drives an electrical load with an output current. The feedback device includes a feedback control module and a feedback output unit. The feedback control module is utilized for receiving a load driven voltage related to the electrical load and generating a control voltage accordingly. The feedback output unit is utilized for generating a feedback current via an equivalent resistor of the feedback output unit according to a voltage difference between the control voltage and a feedback voltage of the power supply module. The power supply module controls the magnitude of the output voltage according to the feedback current, allowing the constant current driver to drive the electrical load with the output current.

Abstract translation: 用于恒流驱动器的反馈装置控制恒流驱动器中的电源模块以产生输出电压。 恒流驱动器通过输出电流驱动电气负载。 反馈装置包括反馈控制模块和反馈输出单元。 反馈控制模块用于接收与电负载相关的负载驱动电压并相应地产生控制电压。 反馈输出单元用于根据控制电压和电源模块的反馈电压之间的电压差，经由反馈输出单元的等效电阻产生反馈电流。 电源模块根据反馈电流控制输出电压的大小，允许恒流驱动器以输出电流驱动电气负载。