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MAX7219 – LED Display Driver a 8 cifre e interfaccia seriale

MAX7219 – LED Display Driver a 8 cifre e interfaccia seriale

MAX7219 – LED Display Driver a 8 cifre e interfaccia seriale

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I.T.I.S. Leonardo Da Vinci - Carpi - Indirizzo Elettronica e TelecomunicazioniAppunti di TDP - Pasquale Altieri -Tabella di sintesiCONVERTITOREDC/DCV 0L C DIODOStep-downBuckStep-upBoostInverterbuck-boostV0= δ ⋅V IV0V I= 1− δV ⋅δ= I1 − δV0⋅ ( VIf ⋅ k ⋅ I−V01 ≤ k ≤ 20⋅Vk < 2( V −V) ⋅V0If ⋅ k ⋅ I0I⋅VVV0⋅ ( 1−δ )0f ⋅ k ⋅ Ik ≤ 202)2I20V8 ⋅ fI02⋅ ( VI⋅ L ⋅V0−V0⋅ ( V0−VI)f ⋅VI0⋅δf ⋅ ΔV⋅ ΔV0I00)⋅ ΔV0P.I.V.= VIDm= I0( 1−δ )ΔIIDp= I0+2P.I.V.= VIDm= I0⎛VI = ⋅⎜DpI0⎝VP.I.V.= VIIDmDp= I=I00⋅2 ⋅I00IL( 2 + k)( 1− δ )⋅I⎞ ⎛ ⋅+ VIt⎟ ⎜⎠ ⎝ 2 ⋅ LON⎞⎟⎠Bibliografia“Elettronica, Dispositivi e Sistemi analogici e programmabili.”; Cuniberti, De Lucchi, Galluzzi;Petrini Editore .Appunti di TDP della prof.ssa Lorena Marassi, a.s. 2008/2009, i.t.i.s. Leonardo da Vinci, Carpi(MO).15Swintching.doc/Rev.25

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