Kedu otu esi eji DC/DC Converter?

Ugbu a, e nwere ọtụtụ ụdị DC/DC converters n'ahịa, resonant converter bụ ụdị DC/DC converter topology, site n'ịchịkwa ugboro mgbanwe iji nweta sekit voltaji resonance na-aga n'ihu. A na-ejikarị ndị na-agbanwe resonant eme ihe na ngwa voltaji dị elu iji mee ka ụdị waveforms dị mfe, melite ihe ike, ma belata mfu mgbanwe nke switches ike dị elu dịka MOSFETs na IGBTs kpatara. Ọ dị mkpa ịmara na a na-ejikarị sekit LLC eme ihe na resonant converters n'ihi na ọ na-eme ka mgbanwe voltaji efu (ZVS) na mgbanwe ugbu a efu (ZCS) dị na oke ọrụ, na-akwado ugboro mgbanwe dị elu, na-ebelata akara ụkwụ nke ihe ndị mejupụtara, ma na-ebelata nnyonye anya electromagnetic (EMI).

Ihe osise eserese nke ihe ntụgharị resonant

A na-ewu ihe ntụgharị resonant n'elu ihe ntụgharị resonant nke na-eji netwọk nke switches iji gbanwee voltaji ntinye DC ka ọ bụrụ ebili mmiri square, nke a na-etinye na sekit resonant. Dịka egosiri na Foto nke 2, sekit resonant nwere resonant capacitor Cr, resonant inductor Lr na magnetizing inductor Lm nke transformer n'usoro. Circuit LLC na-enyocha harmonics ọ bụla dị elu site na iji nhọrọ na-amịkọrọ ike kachasị na ugboro resonant square ebili mmiri a kapịrị ọnụ ma na-ewepụta voltaji sinusoidal site na magnet resonance. A na-eme ka usoro AC a dịkwuo elu ma ọ bụ belata site na transformer, dozie ya, wee tee ya iji mepụta voltaji mmepụta DC agbanwere.

Ihe ntụgharị DC/DC nke Simplified LLC

Ọkụ nke etiti mgbọrọgwụ (RMS) nke capacitor bụ otu n'ime paramita dị mkpa a ga-atụle mgbe a na-ahọrọ capacitor resonant Cr kwesịrị ekwesị maka ihe ntụgharị DC/DC. Ọ na-emetụta ntụkwasị obi capacitor, mmụba voltaji, na arụmọrụ zuru oke nke ihe ntụgharị ahụ (dabere na topology nke sekit resonant). Ọkụ nke RMS na mfu ndị ọzọ dị n'ime na-emetụtakwa mfu okpomọkụ.