A　novel　zero　voltage　switching　(ZVS)　phase　shift　full　bridge　(PSFB)　converter　used　in　geophysical　exploration　is　proposed　in　this　paper.　To　extend　the　ZVS　ranges　and　increase　power　density　of　the　converter,　external　inductor　acting　as　leakage　inductance　is　applied　and　integrated　into　the　integrated　magnetic　(IM)　transformer　with　separated　secondary　winding.　Moreover,　the　loss　of　ZVS　PSFB　converter　is　also　decreased.　Besides,　the　analysis　and　accurate　prediction　methodology　of　the　leakage　inductance　of　the　IM　transformer　are　proposed,　which　are　based　on　magnetic　energy　and　Lebedev.　Finally,　to　verify　the　accuracy　of　analysis　and　methodology,　the　experimental　and　finite　element　analysis　(FEA)　results　of　IM　transformer　and　40　kW　converter　prototypes　are　given.