公开(公告)号：US20130187567A1

公开(公告)日：2013-07-25

申请号：US13557216

申请日：2012-07-25

Applicant: Chih-Ping Li

Inventor： Chih-Ping Li

IPC: H02M7/217 ,  H05B37/02 ,  H02M7/02

CPC classification number: H02M7/2176 ,  H02M1/4225 ,  H02M7/02 ,  H02M2001/007 ,  H05B33/0815 ,  H05B37/02 ,  Y02B70/126 ,  Y10T307/406

Abstract: A load driving apparatus and a method thereof are provided. The provided load driving apparatus includes a first rectification unit, a first conversion unit and a second conversion unit. The first rectification unit is configured to receive and rectify an AC voltage, so as to output a first DC voltage. The first conversion unit is coupled to the first rectification unit, and is configured to receive and convert the first DC voltage, so as to output a second DC voltage. The first conversion unit is further configured to adjust the second DC voltage according to a feedback signal relating to the second DC voltage. The second conversion unit is coupled to the first conversion unit, and is configured to receive and convert the second DC voltage, so as to output a third DC voltage with a constant current to drive a first capacitive load.

Abstract translation: 提供了一种负载驱动装置及其方法。 所提供的负载驱动装置包括第一整流单元，第一转换单元和第二转换单元。 第一整流单元被配置为接收和整流AC电压，以便输出第一DC电压。 第一转换单元耦合到第一整流单元，并且被配置为接收和转换第一直流电压，以便输出第二直流电压。 第一转换单元还被配置为根据与第二DC电压有关的反馈信号来调整第二DC电压。 第二转换单元耦合到第一转换单元，并且被配置为接收和转换第二DC电压，以便以恒定电流输出第三DC电压以驱动第一容性负载。