Design Of High Voltage Switch Power Supply

With the circuit topology switching power supply, control theory, technology continues to improve, and power switching devices, control chip, magnetic components, such as the continuous development of switching power supply applications more widely. In the development of high-voltage power supply, switching power supply technology enables the introduction of high-voltage power supply volume, weight, decreasing power density continues to improve, becoming more digitized, gradually replacing the traditional frequency high voltage power supply. This article describes the phase-shifted full-bridge ZVS-PWM inverter technology in the application of high voltage power supply is designed to achieve soft switching high voltage switching power supply.This paper describes the development of a switching power supply and switching power supply applications in the design of high-voltage power supply, and then analyze the common inverter circuit topology, control, analysis of the basic principles, based on the comparative advantages and disadvantages to clarify the phase-shifted full-bridge ZVS-PWM inverter is suitable for the development of high-voltage power supply reasons. After introducing the distinction between high-voltage power inverter working status with conventional low-voltage power inverter room after analyzes the capacitive load of the inverter model high-voltage power inverter at workFinally, the theoretical analysis of the capacitive transducer filter mode ZVS full-bridge, the introduction of a high-voltage power supply design steps, select the appropriate use of insulating material orbiting skeleton method to solve the high-voltage transformer between the primary and secondary high voltage insulation problems; using two parallel transformer primary, multiple-level output rectifier diode in series through technology to solve a single large power transformer losses, temperature rise and high-voltage rectifier diodes difficult choice questions; and gives the power prototype work waveform, the feasibility of theoretical analysis and design.