In　this　paper,　a　zero-input-current-ripple　(ZICR)　DC-DC　converter　is　proposed.　The　proposed　converter　benefits　like　significant　voltage　gain　and　enhanced　efficiency.　ZICR　is　achieved　by　adding　a　ZICR　structure,　which　consists　of　a　capacitor,　an　inductor,　and　a　coupled　inductor.　The　presence　of　the　capacitor　results　in　an　average　zero　current　passing　through　the　ZICR　structure.　Therefore,　a　small　size　magnetic　core　can　be　used　to　design　the　inductor　and　coupled　inductor,　which　can　reduce　the　volume　and　copper　loss　of　the　magnetic　components.　In　addition,　merging　a　voltage　multiplier　with　a　Y-source　coupled　inductor　to　derive　high　boost　capacity.　The　inherent　passive　clamping　circuit　effectively　alleviates　the　turn　off　voltage　spike　of　the　switch.　All　diodes　achieve　zero　current　switching　(ZCS)　turn　off　by　utilizing　capacitors　to　absorb　leakage　energy.　Then,　the　reverse　recovery　issues　are　mitigated.　An　in-depth　elaboration　is　provided　for　the　operating　principle　of　the　converter.　Ultimately,　a　prototype　with　200-W,　32-380　V,　50-kHz　is　developed　to　validate　the　realizability　of　the　proposed　converter.　Within　the　output　power　range　of　40-200W,　the　overall　efficiency　of　the　prototype　with　the　ZICR　structure　is　higher　than　that　without　this　structure.　The　peak　efficiency　of　the　proposed　converter,　both　in　the　presence　and　absence　of　the　ZICR　structure,　stands　at　95.9%　and　95.6%,　respectively.　　©　2024　IEEE.