Circuito di controllo per un convertitore buck multifase, relativo circuito integrato, convertitore buck multifase e procedimento per il funzionamento di un convertitore buck multifase

Circuito di controllo per un convertitore buck multifase, relativo circuito integrato, convertitore buck multifase e procedimento per il funzionamento di un convertitore buck multifase

A control circuit (22b) for a multiphase buck converter is disclosed. The control circuit (22b) comprises a regulator circuit (2222) and a plurality of phase control circuits (2220). The regulator circuit (2222) generates a regulation signal (REG) as a function of a feedback signal (FB) and a refere...

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Hauptverfasser: RAIMONDI, Marcello, PEDONE, Leonardo, MINNELLA, Filippo, CASTELLANO, Gerardo
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creator RAIMONDI, Marcello
PEDONE, Leonardo
MINNELLA, Filippo
CASTELLANO, Gerardo
description A control circuit (22b) for a multiphase buck converter is disclosed. The control circuit (22b) comprises a regulator circuit (2222) and a plurality of phase control circuits (2220). The regulator circuit (2222) generates a regulation signal (REG) as a function of a feedback signal (FB) and a reference signal (Vref), and each phase control circuit (22201, ..., 2220n) is configured to receive a current sense signal (CS') and generate a respective PWM signal (PWM') as a function of the respective current sense signal (CS'1) and the regulation signal (REG).In particular, the control circuit (22b) comprises a first selector circuit (30) and a second selector circuit (32) configured to receive a selection signal (SEL) and selectively connect each phase control circuit (2220) of a subset of the phase control circuits (2220) to a PWM signal (PWM) to be used to drive (220) a respective stage of the multiphase buck converter, and to current sense signal (CS) provided by the respective stage of the multiphase buck converter. A selection control circuit (34) generates the selection signal (SEL), in order to connect the phase control circuits (2220) to different stages of the multiphase buck converter.
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title Circuito di controllo per un convertitore buck multifase, relativo circuito integrato, convertitore buck multifase e procedimento per il funzionamento di un convertitore buck multifase
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