The　application　of　multi-phase　interleaved　parallel　coupled　inductors　technology　can　effectively　reduce　the　phase　current　ripple　and　improve　the　dynamic　response　speed.　Aimed　at　different　design　objectives,　the　influencing　factors　for　the　steady-state　and　dynamic　performances　of　direct-　and　indirect-coupled　inductors　are　analyzed.　Subsequently,　based　on　the　invariant　equivalent　dynamic　inductance　before　and　after　coupling,　the　direct-　and　indirect-coupled　inductors　are　designed　to　enhance　the　steady-state　performance.　Similarly,　based　on　the　invariant　equivalent　steady-state　inductance　before　and　after　coupling,　direct-　and　indirect-coupled　inductors　are　designed　to　improve　the　dynamic　performance.　Finally,　the　cor-rectness　and　effectiveness　of　the　theoretical　analysis　were　verified　by　experimental　results,　demonstrating　that　the　two　different　coupling　methods　can　significantly　enhance　the　steady-state　and　dynamic　performances　of　the　converter,　respectively.　©　2025　Editorial　Department　of　Journal　of　Power　Supply.　All　rights　reserved.