Method to limit the inrush current in large output capacitance LDOs

The present document relates to a pre-charge circuit of electronic circuits having Miller compensation and significant output capacitance such as LDOs or multistage amplifiers. The pre-charge circuit limits an inrush current right after enabling of the electronic circuit. The pre-charge circuit limi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Bhattad, Ambreesh, Cavallini, Pier
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The present document relates to a pre-charge circuit of electronic circuits having Miller compensation and significant output capacitance such as LDOs or multistage amplifiers. The pre-charge circuit limits an inrush current right after enabling of the electronic circuit. The pre-charge circuit limits and clamps the fast charging of the Miller capacitor. A delay circuit disables the pre-charge circuit when the bias conditions of the Miller capacitor are close to normal bias conditions.