Design And Study On New Multiple Output Switch Power Supply

With the improvement of the nowadays industrialization,the welding machine graduallybecomes an essential instrument during Industrial production.To meet the development of thedigital welding machine,this paper study the auxiliary power system for the digital weldingmachine,focusing on analyzing the problems of multiple output switch power supplytechnology at home and abroad for actual product.And then propose an novel circuitarchitecture method using for small and medium multiple output switch power supply.Thispaper’s majoy works are as follow:First of all,choosing push pull structure as power topology of the new multiple outputswitch power supply after analysis.Then with stable bus DC input voltage and fixed high dutycontrol signal,each output can be stabilized just using the advantage of push pull topologyunder the condition that all of the second sides don’t have close loop.The process will use thecircuit simulation software to test the availability of this architecture method.Next,as the demand of simplicity and security for multiple output switch powersupply,the bus DC converter and fixed duty control circuit will be reasonably designed.Evenusing fewer peripheral circuit,these two circuits can also realize the basic function as well asmeet the design requirement of protection circuit.Then,in order to ensure the power system passing the process of power on startup andrecovery start normally,here will analyze the initial process of the bus DC converter and fixedduty control circuit fully.Besides,the start circuit will be constructed considering therequirement of practicality and reliability.Finally,according to the target of prototype,this will give the detail design process ofcircuit parameter.The overall performance of the prototype will be tested by experiment whichwill be used for proofing the validatation of the whole design program.