平板显示器电源设计_毕业设计论文.doc

毕业设计论文 平板显示器电源设计 摘 要 随着电力电子技术的高速发展，电力电子设备与人们系日益密切，而电子设备都离不开可靠的电源，进入80年代计算机电源全面实现了开关电源化，率先完成计算机的电源换代，进入90年代开关电源相继进入各种控制设备电器通讯设备领域，电子检测设备等都已广泛地使用了开关电源，更促进了开关电源技术的迅速发展。 开关电源是利用现代电力电子技术，控制开关晶体管开通和关断的时间比率，维持稳定输出电压的一种电源，开关电源一般由开关器件（MOSFET、BJT等）构成脉冲宽度调制（PWM）控制。开关电源和线性电源相比，二者的成本都随着输出功率的增加而增长，但二者增长速率。随着电力电子技术的发展和创新，开关电源技术在不断地创新，低输出，这为开关电源提供了广泛的发展空间。 开关电源的发展方向是高频化，使开关电源小型化，并使开关电源进入更的应用领域，特别是在高新技术领域，推动了高新技术产品的小型化、轻便化。 Flat panel display power supply design ABSTRACT With the rapid development of power electronics, power electronics equipment and peoples daily work lives ever closer, and electronic equipment are inseparable from the reliable power supply, computer power into the 80s full realization of the switching power supply technology, the first to complete the computers power generation , the 1990s have entered into a variety of switching power electronics, electrical appliances, communications devices, electronic testing equipment, control equipment, etc. have been widely used switching power supply, but also to promote the rapid development of switching power supply technology. Switching power supply is the use of modern power electronics technology, control switching transistor turn-on and turn-off time ratio, to maintain a stable output voltage of a power, switching power supply switching devices generally (MOSFET, BJT, etc.) constitute the use of pulse width modulation (PWM) control . Switching and linear power compared to both of the costs are increased as the increase of the output power, but they grow at different rates. With the development of power electronics technology and innovation, constantly switching power supply technology innovation, making the low output power costs down, which is the switching power supply provides a broad space for development. Switching power supply development in the direction of high-frequency, because it makes the switching power supply to small development and to switch power to enter a wider field of application, especially i