導(dǎo)讀：DC/DC|分布電源|DC-DC|濾波電容|模塊電源|電源模塊|隔離電源|分布電源|過載保護(hù)|短路保護(hù).詳細(xì)介紹DC-DC模塊電源的典型應(yīng)用、電壓極性變換、外接濾波電容的選擇、過載短路保護(hù)電路和串并聯(lián)使用等.在確保安全可靠工作的條件下其濾波電容的最大容值不應(yīng)超過10uF.一般建議用4.7uF.
本文對DC-DC 電源模塊的典型應(yīng)用、電壓極性變換、外接濾波電容選擇、過載短路保護(hù)電路和串并聯(lián)使用詳細(xì)介紹。正確的使用方法可以延長產(chǎn)品的使用壽命，避免干擾、過熱、自激、啟動不良等現(xiàn)象的出現(xiàn)以及不可修復(fù)的損壞。
輸出濾波電容器的容值要適當(dāng)。輸出電容太大，很可能會造成啟動問題。對于每一路輸出，在確保安全可靠工作的條件下，其濾波電容的最大容值不應(yīng)超過10uF。一般建議用4.7uF。若需獲得非常低的紋波值時，可在DC-DC轉(zhuǎn)換器輸出端串聯(lián)了一個電感器，這時輸出濾波電容的容值不應(yīng)太大。
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