Tam sim no, muaj ntau hom DC / DC converters nyob rau hauv kev ua lag luam, resonant converter yog ib hom ntawm DC / DC converter topology, los ntawm kev tswj cov zaus hloov mus ua kom tiav qhov tso zis voltage resonance Circuit Court.Resonant converters feem ntau yog siv nyob rau hauv high-voltage daim ntawv thov kom du waveforms, txhim kho lub zog zoo, thiab txo cov kev hloov pauv los ntawm cov hluav taws xob ntau zaus xws li MOSFETs thiab IGBTs.Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias LLC Circuit Court feem ntau yog siv nyob rau hauv resonant converters vim nws enables xoom voltage switching (ZVS) thiab xoom tam sim no hloov (ZCS) nyob rau hauv kev khiav hauj lwm ntau yam, txhawb ntau dua switching zaus, txo cov hneev taw ntawm lub Cheebtsam, thiab txo electromagnetic. Kev cuam tshuam (EMI).

Schematic daim duab ntawm lub resonant converter

Lub resonant converter yog tsim los ntawm ib tug resonant inverter uas siv ib tug network ntawm keyboards los hloov ib tug DC input voltage rau hauv ib tug square yoj, uas yog ces siv rau ib tug resonant circuits.Raws li pom nyob rau hauv daim duab 2, lub resonant Circuit Court muaj ib tug resonant capacitor Cr, ib tug resonant inductor Lr thiab ib tug magnetizing inductor Lm ntawm lub transformer nyob rau hauv series.Lub LLC Circuit Court lim tawm ib qho kev txiav txim siab dua los ntawm kev xaiv absorbing lub zog siab tshaj plaws ntawm lub zog square yoj resonant zaus thiab tso tawm sinusoidal voltage los ntawm magnetic resonance.Qhov no AC waveform yog amplified los yog txo los ntawm ib tug transformer, rectified, thiab ces lim los tsim lub converted DC tso zis voltage.

Simplified LLC resonant DC / DC converter

Lub hauv paus txhais tau tias square (RMS) tam sim no ntawm lub capacitor yog ib qho tseem ceeb uas yuav tsum tau txiav txim siab thaum xaiv qhov tsim nyog resonant capacitor Cr rau DC / DC converter.Nws cuam tshuam rau capacitor kev ntseeg siab, voltage ripple, thiab tag nrho cov kev ua tau zoo ntawm lub converter (nyob ntawm lub topology ntawm lub resonant circuit).Thaum tshav kub kub dissipation tseem cuam tshuam los ntawm RMS tam sim no thiab lwm yam kev poob hauv.