公开(公告)号：US20100052631A1

公开(公告)日：2010-03-04

申请号：US12200225

申请日：2008-08-28

Applicant: Xin WU ,  Shu-Zhuang LU

Inventor： Xin WU ,  Shu-Zhuang LU

IPC: G05F1/00

CPC classification number: H02M3/33523

Abstract: An improved structure of a power supply mainly discloses three PSR solutions based on a PWM controller that is used in charger/adapter solutions, in which a low voltage PNP transistor and zener diode composes error signal amplification circuit, or −431 typed shunt regulators senses and amplifies the input error signal caused by the changes of load or line voltage, or one diode and two resistors form sense circuit of error signal. These PSR solutions employ a transformer, in which the input side of the transformer is connected to an AC input and PWM controller, and the output side of the transformer is connected to a rectified diode. The present invention further provides low cost PSR solutions with higher system reliability, better line/load regulation, and short circuit characteristic.

Abstract translation: 电源的改进结构主要公开了三种基于PWM控制器的PSR解决方案，该控制器用于充电器/适配器解决方案中，其中低压PNP晶体管和齐纳二极管构成误差信号放大电路，或-431型分流调节器， 放大由负载或线路电压变化引起的输入误差信号，或者一个二极管和两个电阻器形成误差信号的检测电路。 这些PSR解决方案采用变压器，其中变压器的输入侧连接到交流输入和PWM控制器，变压器的输出侧连接到整流二极管。 本发明还提供了具有更高的系统可靠性，更好的线路/负载调节和短路特性的低成本PSR解决方案。