izindaba

Emikhiqizweni ye-elekthronikhi, sivame ukubona isibalo se-DC/DC, i-LDO, yimuphi umehluko phakathi kwabo, ekwakhiweni kwemikhiqizo ye-elekthronikhi indlela yokukhetha nendlela yokuklama ukuze kugwenywe ukukhubazeka kokuklama kwesifunda?

I-DC/DC iwukuguqula i-voltage yamanje yokufaka engashintshi ibe enye i-voltage ephumayo yamanje engashintshi, izinhlobo ezivamile i-Boost (Boost), i-Buck (Buck), i-voltage ekhuphuka naphansi kanye nesakhiwo sesigaba sokuhlehla.”Ingabe isifinyezo se-lowdropoutvoltageregulator, ukuphuma kancane I-linear regulators.Zombili zimisa i-voltage yokufaka ku-voltage ethile, futhi i-LDO ingasetshenziswa kuphela njengokuphumayo okuya phansi.Ekukhethweni kwe-chip yamandla ikakhulukazi naka imingcele:

1. I-voltage yokuphumayo.DC/DC i-voltage ephumayo ingalungiswa ngokuphikiswa kwempendulo, i-LDO inezinhlobo ezimbili zokukhishwa okungaguquki nokuphumayo okulungiswayo;

I-2, umehluko we-voltage okokufaka nokuphumayo.Umehluko we-voltage phakathi kokufakwayo nokuphumayo kuyipharamitha ebalulekile ye-LDO.Okukhiphayo okwamanje kwe-LDO kuyalingana nokokufaka kwamanje.Uma umehluko wengcindezi umncane, ukusetshenziswa kwamandla kuncane kanye nokusebenza kahle kwe-chip.

3. Umkhawulo ophezulu wamanje ophumayo.I-LDO ivamise ukuba nomkhawulo ophezulu wamanje wokuphumayo wamakhulu ambalwa e-mA, kuyilapho i-DCDC inomphumela wamanje omkhulu ongu-A ambalwa noma ngaphezulu.

4. I-voltage yokufaka.Ama-chips ahlukene anezidingo zokufaka ezihlukene.

5. I-Ripple/umsindo.I-ripple/umsindo we-DC/DC osebenza esimweni sokushintsha mubi kakhulu kune-LDO, ngakho-ke isekethe ezwela kakhulu ngesikhathi sokuklama kufanele izame ukukhetha ukunikezwa kwamandla kwe-LDO.

6. Ukusebenza kahle.Uma i-voltage yokufaka nokuphumayo iseduze, ukusebenza kahle okuhlobene kokukhetha i-LDO kuphakeme kune-DC/DC;uma umehluko wengcindezi mkhulu, ukusebenza kahle okuhlobene kokukhetha i-DC/DC kuphezulu.Njengoba ukukhishwa kwamanje kwe-LDO ngokuyisisekelo kufana nokokufaka kwamanje, ukwehla kwamandla kagesi kukhulu kakhulu futhi amandla asetshenziswa ku-LDO makhulu kakhulu, ukusebenza kahle akuphezulu.

7. I-Cost and peripheral circuit.Izindleko ze-LDO ziphansi kune-DCDC, futhi i-peripheral circuit ilula.