DC OFFSET CORRECTION FOR INDUCTOR CURRENT RIPPLE BASED, CONSTANT-ON-TIME DC-DC CONVERTERS

Embodiments of a circuit for controlling DC offset error for an inductor current ripple based, constant-on time DC-DC converter are disclosed. The circuit includes a ripple generation circuit coupled to a reference voltage input and to a sense voltage input, and having a reference voltage output to...

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Bibliographische Detailangaben
Hauptverfasser: Jing, Yue, Dashtestani, Ahmad, Chan, Shufan
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Embodiments of a circuit for controlling DC offset error for an inductor current ripple based, constant-on time DC-DC converter are disclosed. The circuit includes a ripple generation circuit coupled to a reference voltage input and to a sense voltage input, and having a reference voltage output to form a main loop. The circuit also includes a DC error correction circuit connected between the reference voltage input and the sense voltage input, and the reference voltage output of the ripple generation circuit. The DC error correction circuit includes a coarse DC error correction loop coupled between the sense voltage input and the reference voltage output and a fine DC error correction loop coupled between the reference voltage input and the reference voltage output. A method for controlling DC offset error for an inductor current ripple based, constant-on time DC-DC converter, is also disclosed.