iindaba

Kwiimveliso ze-elektroniki, sihlala sibona umzobo we-DC / DC, LDO, yintoni umahluko phakathi kwabo, kuyilo lweemveliso zombane indlela yokukhetha kunye nendlela yokuyila ukuphepha iziphene zoyilo lwesekethe?

I-DC/DC kukuguqula amandla ombane angaguqukiyo egalelo langoku abe kolunye umbane wemveliso ongaguqukiyo wangoku, iintlobo eziqhelekileyo zezoBoost (Boost), iBuck (iBuck), umbane wokunyuka nokuhla kunye nesakhiwo sesigaba sokubuyisela umva.” Bobabini bazinzisa igalelo lombane kwi-voltage ethile, kwaye i-LDO ingasetyenziswa kuphela njengemveliso esezantsi. Ekukhetheni i-chip yamandla ikakhulu ingqalelo kwiiparamitha:

1. I-voltage ye-output.DC / DC i-voltage ye-output iyakwazi ukulungelelaniswa nokuchaswa kwempendulo, i-LDO ineentlobo ezimbini zemveliso esisigxina kunye ne-adjustable output;

I-2, igalelo kunye nokuphuma kwe-voltage difference.Umahluko we-voltage phakathi kwegalelo kunye nemveliso yiparameter ebalulekileyo ye-LDO.Imveliso yangoku yeLDO ilingana negalelo langoku.Umncinci umehluko woxinzelelo, uncinci ukusetyenziswa kwamandla kunye nokusebenza kakuhle kwe-chip.

3. Ubuninzi bemveliso yangoku.I-LDO idla ngokuba nemveliso ephezulu yangoku yamakhulu aliqela e-mA, ngelixa i-DCDC inobuninzi bemveliso yangoku yee-A ezininzi okanye ngaphezulu.

4. Igalelo lombane.Iitshiphusi ezahlukeneyo zineemfuno zokufaka ezahlukeneyo.

5. I-Ripple / ingxolo.I-ripple / ingxolo ye-DC / DC esebenza kwimeko yokutshintsha imbi kakhulu kune-LDO, ngoko ke isiphaluka esithintekayo ngexesha loyilo kufuneka sizame ukukhetha ukunikezelwa kwamandla e-LDO.

6. Ukusebenza kakuhle.Ukuba igalelo kunye ne-voltage ephumayo isondele, ukusebenza kakuhle kokukhetha i-LDO kuphezulu kune-DC / DC;ukuba umahluko woxinzelelo mkhulu, ukusebenza kakuhle kokukhetha i-DC/DC kuphezulu.Ekubeni imveliso yangoku ye-LDO ngokusisiseko ifana negalelo langoku, ukuhla kwamandla ombane kukhulu kakhulu kwaye amandla asetyenziswe kwi-LDO makhulu kakhulu, ukusebenza kakuhle akuphezulu.

7. Iindleko kunye ne-peripheral circuit.Ixabiso le-LDO liphantsi kune-DCDC, kwaye i-peripheral circuit ilula.