公开(公告)号：US09155137B2

公开(公告)日：2015-10-06

申请号：US13831874

申请日：2013-03-15

Applicant: FSP TECHNOLOGY INC.

Inventor： Cheng-Hui Yang ,  Ching-Chia Chu

IPC: H05B33/08

CPC classification number: H05B33/0809 ,  H05B33/0815 ,  H05B33/089 ,  Y02B20/347

Abstract: A load driving apparatus related to an LED lamp and a method thereof are provided. The load driving apparatus includes a PWM-based power converter and a determination circuit. The PWM-based power converter is coupled to the LED lamp, and is configured to: generate a DC operation voltage of the LED lamp; and control a current flowing through the LED lamp in response to a dimming signal, so as to adjust a brightness of the LED lamp. The determination circuit is coupled to the PWM-based power converter and the LED lamp, and is configured to: receive the DC operation voltage; and stop conducting the DC operation voltage to the LED lamp in case that a lamp-off condition of the LED lamp is satisfied.

Abstract translation: 提供了与LED灯有关的负载驱动装置及其方法。 负载驱动装置包括基于PWM的功率转换器和确定电路。 基于PWM的功率转换器耦合到LED灯，并被配置为：产生LED灯的直流工作电压; 并响应于调光信号控制流过LED灯的电流，以调节LED灯的亮度。 确定电路耦合到基于PWM的功率转换器和LED灯，并且被配置为：接收DC操作电压; 在满足LED灯的熄灯状态的情况下，停止对LED灯的直流动作电压。

公开(公告)号：US20140098452A1

公开(公告)日：2014-04-10

申请号：US14049208

申请日：2013-10-08

Applicant: FSP TECHNOLOGY INC.

Inventor： Lung-Chi Wei ,  Ching-Chia Chu

IPC: H02H9/02

CPC classification number: H02H9/02 ,  H02H9/001

Abstract: A power supply apparatus is provided, and which includes a power conversion circuit, a control chip with soft-start function and a short protection circuit. The power conversion circuit is configured to provide a DC output voltage to a load in response to an output pulse-width-modulation (PWM) signal. The control chip is operated under a DC input voltage, and configured to generate the output PWM signal to control the operation of the power conversion circuit. The short protection circuit is configured to pull-down the level of a soft-start pin of the control chip, so as to substantially/significantly reduce the frequency and duty cycle of the output PWM signal, and then substantially/significantly reduce the current flowing through the shorted load.

Abstract translation: 提供一种电源装置，其包括功率转换电路，具有软启动功能的控制芯片和短路保护电路。 功率转换电路被配置为响应于输出脉宽调制（PWM）信号向负载提供DC输出电压。 控制芯片在DC输入电压下工作，并且被配置为产生输出PWM信号以控制功率转换电路的操作。 短路保护电路被配置为下拉控制芯片的软启动引脚的电平，以便基本上/显着地降低输出PWM信号的频率和占空比，然后基本上/显着地减小电流流动 通过短路负载。

公开(公告)号：US20140015412A1

公开(公告)日：2014-01-16

申请号：US13831874

申请日：2013-03-15

Applicant: FSP TECHNOLOGY INC.

Inventor： Cheng-Hui Yang ,  Ching-Chia Chu

IPC: H05B33/08

CPC classification number: H05B33/0809 ,  H05B33/0815 ,  H05B33/089 ,  Y02B20/347

Abstract: A load driving apparatus related to an LED lamp and a method thereof are provided. The load driving apparatus includes a PWM-based power converter and a determination circuit. The PWM-based power converter is coupled to the LED lamp, and is configured to: generate a DC operation voltage of the LED lamp; and control a current flowing through the LED lamp in response to a dimming signal, so as to adjust a brightness of the LED lamp. The determination circuit is coupled to the PWM-based power converter and the LED lamp, and is configured to: receive the DC operation voltage; and stop conducting the DC operation voltage to the LED lamp in case that a lamp-off condition of the LED lamp is satisfied.

Abstract translation: 提供了与LED灯有关的负载驱动装置及其方法。 负载驱动装置包括基于PWM的功率转换器和确定电路。 基于PWM的功率转换器耦合到LED灯，并被配置为：产生LED灯的直流工作电压; 并响应于调光信号控制流过LED灯的电流，以调节LED灯的亮度。 确定电路耦合到基于PWM的功率转换器和LED灯，并且被配置为：接收DC操作电压; 在满足LED灯的熄灯状态的情况下，停止对LED灯的直流动作电压。

公开(公告)号：US12224659B2

公开(公告)日：2025-02-11

申请号：US18102784

申请日：2023-01-30

Applicant: FSP TECHNOLOGY INC.

Inventor： Che-Min Lin ,  Kuo-Chieh Chan ,  Kuan-Jung Lee ,  Chi-Chang Lien ,  Ching-Chia Chu

IPC: H02J7/00 ,  H02M1/32 ,  H02M3/335

Abstract: A charging device and a safety function control circuit and method thereof are provided. When a charging device is not connected to a load, a converted voltage value of a power connection terminal of the charging device is kept to be lower than a safe voltage value so as to maintain a safe mode. The safety function control circuit includes a first control module and a second control module for constant voltage control. The first control module and the second control module perform matching control on a power conversion circuit of the charging device, and in case of a single fault of one of the control modules, the other module is still capable of keeping the converted voltage value to be less than the safe voltage value. Thus, it is ensured that the safe mode stays functional in case of a concurrency of both a single hardware fault and a single firmware fault.

公开(公告)号：US09419433B2

公开(公告)日：2016-08-16

申请号：US14049208

申请日：2013-10-08

Applicant: FSP TECHNOLOGY INC.

Inventor： Lung-Chi Wei ,  Ching-Chia Chu

IPC: H02H7/00 ,  H02H9/02 ,  H02H9/00

CPC classification number: H02H9/02 ,  H02H9/001

Abstract: A power supply apparatus is provided, and which includes a power conversion circuit, a control chip with soft-start function and a short protection circuit. The power conversion circuit is configured to provide a DC output voltage to a load in response to an output pulse-width-modulation (PWM) signal. The control chip is operated under a DC input voltage, and configured to generate the output PWM signal to control the operation of the power conversion circuit. The short protection circuit is configured to pull-down the level of a soft-start pin of the control chip, so as to substantially/significantly reduce the frequency and duty cycle of the output PWM signal, and then substantially/significantly reduce the current flowing through the shorted load.

Abstract translation: 提供一种电源装置，其包括功率转换电路，具有软启动功能的控制芯片和短路保护电路。 功率转换电路被配置为响应于输出脉宽调制（PWM）信号向负载提供DC输出电压。 控制芯片在DC输入电压下工作，并且被配置为产生输出PWM信号以控制功率转换电路的操作。 短路保护电路被配置为下拉控制芯片的软启动引脚的电平，以便基本上/显着地降低输出PWM信号的频率和占空比，然后基本上/显着地减小电流流动 通过短路负载。