公开(公告)号：US09190904B2

公开(公告)日：2015-11-17

申请号：US13941271

申请日：2013-07-12

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Wen-Tien Tsai ,  Ching-Ran Lee ,  Po-Yen Chen ,  Ching-Tsai Pan

IPC: G05F1/00 ,  H02M3/155 ,  H02M1/00

CPC classification number: H02M3/155 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A DC conversion circuit in the disclosure includes a buck-boost converter and a resonant stage circuit. The buck-boost converter has two input ends, a negative output end and a positive output end. The buck-boost converter receives a first DC signal via its two input ends, and outputs a second DC signal via its two output ends. The resonant stage circuit has two input ends and two output ends. The resonant stage circuit receives the second DC signal via its two input ends, converts the second DC signal into energy for power charging, and outputs the energy to a load via its two output ends. Then, the resonant stage circuit converts the energy, which is used for power charging, to form a negative voltage by a resonance effect, and outputs the energy to the load via its two output ends.

Abstract translation: 本公开中的直流转换电路包括降压 - 升压转换器和谐振级电路。 降压 - 升压转换器有两个输入端，一个负输出端和一个正输出端。 降压 - 升压转换器经由其两个输入端接收第一DC信号，并且经由其两个输出端输出第二DC信号。 谐振级电路具有两个输入端和两个输出端。 谐振级电路通过其两个输入端接收第二直流信号，将第二直流信号转换为用于充电的能量，并通过其两个输出端将能量输出到负载。 然后，谐振级电路将用于充电的能量转换成通过谐振效应形成负电压，并通过其两个输出端将能量输出到负载。

公开(公告)号：US20160050735A1

公开(公告)日：2016-02-18

申请号：US14532690

申请日：2014-11-04

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Ching-Ran Lee ,  Wen-Tien Tsai ,  Tzu-Hung Yang

IPC: H05B37/02

CPC classification number: H05B33/0851 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B20/42 ,  Y02B20/46

Abstract: A dimming system comprises a controller and an AC-to-DC converter. The controller outputs a control signal in response to a dimming signal. The controller comprises a frequency adjustment circuit and a duty cycle adjustment circuit. The frequency adjustment circuit adjusts the frequency of the control signal in response to the dimming signal. The duty cycle adjustment circuit adjusts the duty cycle of the control signal in response to the dimming signal. The AC-to-DC converter converts an external power and to output a DC signal in response to the control signal so as to drive a light source by the DC signal. When the controller is operated at a first mode, the control signal has a first frequency and a first duty cycle. When the controller switches to a second mode, the control signal has a second frequency and a second duty cycle.

Abstract translation: 调光系统包括控制器和AC-DC转换器。 控制器响应于调光信号输出控制信号。 控制器包括频率调节电路和占空比调节电路。 频率调节电路响应于调光信号调节控制信号的频率。 占空比调整电路根据调光信号调节控制信号的占空比。 AC-DC转换器转换外部电力并响应于控制信号输出DC信号，以便通过DC信号驱动光源。 当控制器在第一模式下操作时，控制信号具有第一频率和第一占空比。 当控制器切换到第二模式时，控制信号具有第二频率和第二占空比。

公开(公告)号：US12137502B2

公开(公告)日：2024-11-05

申请号：US18078347

申请日：2022-12-09

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Che-Min Kung ,  Ching-Ran Lee ,  Shi-Wei Huang ,  Wen-Tien Tsai

IPC: H05B45/14 ,  H05B45/3725 ,  H05B45/48

Abstract: A linear driving module includes: a control circuit, a dimming module, and a low-dropout regulator. The control circuit generates switch signals in response to a change in a pulsed DC voltage. The dimming module receives the pulsed DC voltage. The dimming module includes dimming units. Light-emitting diode units in the dimming units are in a light-on state or a light-off state. The low-dropout regulator receives an input voltage from the dimming unit, and converts the input voltage into a regulated voltage. The input voltage varies with the number of light-emitting diode units in the light-on state. The input voltage is lower than the pulsed DC voltage, and the regulated voltage is lower than the input voltage.

公开(公告)号：US20240204660A1

公开(公告)日：2024-06-20

申请号：US18080877

申请日：2022-12-14

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Wen-Tien Tsai ,  Geng-You Ke ,  Chao-Wei Wang ,  Ching-Ran Lee

IPC: H02M3/07

CPC classification number: H02M3/07

Abstract: A voltage converter is connected with a load. The voltage converter includes a power source, a first switching element, a second switching element, an energy storage inductor, an energy storage capacitor and N capacitor modules. The first switching element is connected between a first terminal of the power source and a first node. The second switching element is connected between the first node and a second node. A second terminal of the power source is connected with the second node. The energy storage inductor is connected between the first node and the third node. The N capacitor modules are connected between the third node and a fourth node, wherein N is a positive integer. The energy storage capacitor is connected between the fourth node and the second node.

公开(公告)号：US09257904B2

公开(公告)日：2016-02-09

申请号：US13937685

申请日：2013-07-09

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Wen-Tien Tsai ,  Ching-Ran Lee ,  Po-Yen Chen ,  Ching-Tsai Pan

IPC: G05F1/00 ,  G05F1/40 ,  H02M3/335 ,  H02M3/155 ,  H02M1/00

CPC classification number: H02M3/155 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A direct current (DC) conversion circuit suitable for driving a load comprises a buck-boost converter, a resonant stage circuit and an output stage circuit. The buck-boost converter has two input ends receiving a first DC signal, and two output ends outputting a second DC signal. The resonant stage circuit has two input ends receiving the second DC signal. The resonant stage circuit converts the second DC signal to energy and further converts the energy to a negative voltage by a resonance effect. The resonant stage circuit has two input ends outputting the energy. The output stage circuit has two input ends receiving the energy to store the energy, and two output ends outputting energy to the load.

Abstract translation: 适用于驱动负载的直流（DC）转换电路包括降压 - 升压转换器，谐振级电路和输出级电路。 降压 - 升压转换器具有两个输入端接收第一直流信号，两个输出端输出第二直流信号。 谐振级电路具有接收第二DC信号的两个输入端。 谐振级电路将第二DC信号转换成能量，并通过共振效应将能量进一步转换为负电压。 谐振级电路具有输出能量的两个输入端。 输出级电路具有两个接收能量以存储能量的输入端，两个输出端向负载输出能量。

公开(公告)号：US20140139128A1

公开(公告)日：2014-05-22

申请号：US13937685

申请日：2013-07-09

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Wen-Tien Tsai ,  Ching-Ran Lee ,  Po-Yen Chen ,  Ching-Tsai Pan

IPC: H05B33/08

CPC classification number: H02M3/155 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A direct current (DC) conversion circuit suitable for driving a load comprises a buck-boost converter, a resonant stage circuit and an output stage circuit. The buck-boost converter has two input ends receiving a first DC signal, and two output ends outputting a second DC signal. The resonant stage circuit has two input ends receiving the second DC signal. The resonant stage circuit converts the second DC signal to energy and further converts the energy to a negative voltage by a resonance effect. The resonant stage circuit has two input ends outputting the energy. The output stage circuit has two input ends receiving the energy to store the energy, and two output ends outputting energy to the load.

Abstract translation: 适用于驱动负载的直流（DC）转换电路包括降压 - 升压转换器，谐振级电路和输出级电路。 降压 - 升压转换器具有两个输入端接收第一直流信号，两个输出端输出第二直流信号。 谐振级电路具有接收第二DC信号的两个输入端。 谐振级电路将第二DC信号转换成能量，并通过共振效应将能量进一步转换为负电压。 谐振级电路具有输出能量的两个输入端。 输出级电路具有两个接收能量以存储能量的输入端，两个输出端向负载输出能量。

公开(公告)号：US20240179812A1

公开(公告)日：2024-05-30

申请号：US18078347

申请日：2022-12-09

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Che-Min Kung ,  Ching-Ran Lee ,  Shi-Wei Huang ,  Wen-Tien Tsai

IPC: H05B45/14 ,  H05B45/48

CPC classification number: H05B45/14 ,  H05B45/48 ,  H05B45/3725

Abstract: A linear driving module includes: a control circuit, a dimming module, and a low-dropout regulator. The control circuit generates switch signals in response to a change in a pulsed DC voltage. The dimming module receives the pulsed DC voltage. The dimming module includes dimming units. Light-emitting diode units in the dimming units are in a light-on state or a light-off state. The low-dropout regulator receives an input voltage from the dimming unit, and converts the input voltage into a regulated voltage. The input voltage varies with the number of light-emitting diode units in the light-on state. The input voltage is lower than the pulsed DC voltage, and the regulated voltage is lower than the input voltage.

公开(公告)号：US10986715B1

公开(公告)日：2021-04-20

申请号：US16702028

申请日：2019-12-03

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Ching-Ran Lee ,  Chi-Chun Huang ,  Che-Min Kung ,  Wen-Tien Tsai ,  Yu-Jen Chen

IPC: H05B45/37 ,  H05B45/395 ,  H05B45/20 ,  H05B45/48 ,  H05B45/00

Abstract: In driving a segmented LED loading, an alternating current (AC) voltage is rectified into a direct current (DC) voltage; the DC voltage is regulated into an input voltage and the input voltage is maintained higher than a lowest voltage used for lighting at least one LED segment of the segmented LED loading; the input voltage and a current flowing through the segmented LED loading is detected to generate a switch control signal and a current control signal; respective operation states of each of a plurality of switches of a LED segment switch module are controlled by the switch control signal to control each LED segment of the segmented LED loading as power-supply state or no-power-supply state; and the current of the segmented LED loading is regulated based on the current control signal.

公开(公告)号：US09549444B2

公开(公告)日：2017-01-17

申请号：US14532690

申请日：2014-11-04

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Ching-Ran Lee ,  Wen-Tien Tsai ,  Tzu-Hung Yang

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0851 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B20/42 ,  Y02B20/46

Abstract: A dimming system comprises a controller and an AC-to-DC converter. The controller outputs a control signal in response to a dimming signal. The controller comprises a frequency adjustment circuit and a duty cycle adjustment circuit. The frequency adjustment circuit adjusts the frequency of the control signal in response to the dimming signal. The duty cycle adjustment circuit adjusts the duty cycle of the control signal in response to the dimming signal. The AC-to-DC converter converts an external power and to output a DC signal in response to the control signal so as to drive a light source by the DC signal. When the controller is operated at a first mode, the control signal has a first frequency and a first duty cycle. When the controller switches to a second mode, the control signal has a second frequency and a second duty cycle.

Abstract translation: 调光系统包括控制器和AC-DC转换器。 控制器响应于调光信号输出控制信号。 控制器包括频率调节电路和占空比调节电路。 频率调节电路响应于调光信号调节控制信号的频率。 占空比调整电路根据调光信号调节控制信号的占空比。 AC-DC转换器转换外部电力并响应于控制信号输出DC信号，以便通过DC信号驱动光源。 当控制器在第一模式下操作时，控制信号具有第一频率和第一占空比。 当控制器切换到第二模式时，控制信号具有第二频率和第二占空比。

公开(公告)号：US09343956B2

公开(公告)日：2016-05-17

申请号：US13846433

申请日：2013-03-18

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Wen-Tien Tsai ,  Ching-Ran Lee ,  Po-Yen Chen ,  Ching-Tsai Pan

IPC: G05F1/70 ,  H02M1/42

CPC classification number: H02M1/4266 ,  Y02B70/123

Abstract: A passive power factor correction circuit includes: a DC capacitor and an input capacitor, coupled to a rectifying circuit and charged by a DC voltage from the rectifying circuit; an output capacitor, coupled to a load; first diode and a second diode, coupled to the input capacitor and the output capacitor; and an inductor, coupled to the load, the input capacitor and the output capacitor. Charging into and discharging from the DC capacitor are completed within a half cycle of an input AC voltage.

Abstract translation: 无源功率因数校正电路包括：直流电容器和输入电容器，耦合到整流电路并由整流电路的直流电压充电; 耦合到负载的输出电容器; 第一二极管和第二二极管，耦合到输入电容器和输出电容器; 以及耦合到负载的电感器，输入电容器和输出电容器。 在直流电容器的充电和放电完成在输入交流电压的一半周期内。