L4970 Series PWM Switch-mode Power Supply Cotroller and Its Application
Ji Juanzao, Xie Zhusen. And Li Wei
The paper introduces L4970 series new PWM switching-mode power supply controller which has complete protection, excellent property, and steady output-voltage. It presents its application surroundings, main features, electrical characteristics, encapsulation, pin's functions and pin's uses, choosing methods of the key components, etc. Here, the author emphatically introduces, an application example of switching-mode power supply system applied L4970A in some semiconductor refrigeration device, and gives the operating principle, special circuits, debuging, installation and warning in detail.
【CateGory Index】： TN86