A Monolithic Integrated High Voltage And Ac - Dc Power Supply Control Ic Design

Developing of the electronic industry stimulates the development and improvement of the switching power supply, recently. Switching power is the connection between high voltage AC power grid and electric equipment with the low DC power, plays a role of power conversion, and becomes the necessary part of various electric products and equipments. Monolithic off-line AC/DC switching-mode supply (SMPS) is widely used in various electric products which need AC/DC conversion.The objective of this work is to design and realize a monolithic flyback AC/DC switching-mode power management IC in which contains the high voltage power device and the management circuit working with lower voltage. The chip has characteristics of internal voltage and current reference with low temperature coefficient(voltage reference with exponential curvature compensation and current reference with piecewise-linear curvature-correcting), the oscillator has two working frequency adapt for the different application, hysteretic over-temperature protection to prevent the continuous over-temperature condition, leading edge blanking to prevent the fault response by current limit comparator with reaction to peak current generated in the moment of turn-on.This thesis first introduces the fundamentals of switching-mode supply, the application and internal block of this chip. Then it presents the detail of the circuit design and simulation result, including reference, thermal shutdown, gate driver, leading edge blanking, and oscillator. At last, the thesis introduces the layout of corresponding modules and the power MOSFETs...