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                            2500W ON BOARD DC/DC

                            Release time:

                            2023-05-24 10:36

                            pic

                            PROJECT INTRODUTION
                            The reference design is a 2.5KW on board DC/DC converter with inputvoltage range 200~450Vdc, rated output 12.5V/200A. The maintopology is Boost + full bridge LLC + peak current control synchronousrectifier output.
                             
                            DESIGN SPECIFICATION
                            Input Voltage 200vdc-450Vdc
                            Output Voltage 12.5Vdc
                            Rated Power 2500KW
                            System Efficiency 95.6%網25%load:93afull load
                            Switching Frequency Boost:100KHz; LLC:80~300KHz

                             

                            FEATURES

                            · Boost + peak current control synchronous rectifier LLC:

                            · High efficiency, peak up to 95.6%:

                            · Fast response, cycle-by-cycle protection;

                            · No electrolytic capacitor design, longer life and higher reliability;

                            · Small volume 145mm200mm*50mm, power density 28W/incha3:

                            · Full protection, including input OVP & UVP, output ovp & OCP and shortcircuit protection

                             

                            MAIN TOPOLOGY

                            pic

                             

                            MAIN DEVICES
                             
                            Function Part Number Brand
                            Boost-MOS IXFH46N65X2 IXYS
                            Boost Diode C3D10060A Wolfspeed
                            Boost Driver IXDN604SIA IXYS
                            LLC Primary MOSFET IXFH60N65X2 IXYS
                            LLC Secondary MOSFET IXTA340NO4T4-7 IXYS
                            LLC MOSFET Driver IXDN604SIA IXYS

                             

                            MEASUREMENT RESULTS AND WAVEFORMS

                            picBoost: 500Vin 30kW 2 Channels Vgs&Vds 

                            picBoost: 500Vin 3kW 2 Channels Vgs&Vds&Iind

                             

                             

                             

                            pic200Vin Boost Vgs&Vds

                            pic400Vin Boost Vgs&Vds

                             

                             

                             

                            picLLC Vgs_Pri&Vds&lpri&Vgs_sec

                            picLLC Vds_sec&Ipri&Vgs_sec

                             

                             

                             

                            picOutput voltage ripple @ no load

                            picStart up @ no load

                             

                             

                             

                            picOutput voltage @ full load

                            picStart up @ full load

                             

                            Download related files

                            File name
                            Release time
                            Download

                            2500W on board DCDC

                            2023-05-24

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