CURRENT CONTROLLED BUCK REGULATOR CIRCUIT AND CORRESPONDING CONTROL METHOD
Dossier Overview
Applicant
STMicroelectronics International N.V.
Inventor
Nicola Errico; Rossella Gaudiano; Luca Finazzi; Enrico Ferrara; Ivan Floriani
IPC Classification
CPC Classification
A buck regulator circuit comprises a half bridge comprising high and low side switches driven by a PWM signal, a pair of drivers coupled to a given switch among the high and low side switches to supply selectively first and second driving currents, enabling selectively the first and/or second driving current to supply a current switching on the given switch, an ON current value passing through the given switch at a switch-on depending on which of the first and/or second driving current is enabled, and a timing circuit configured, during the switch-on of the switch, to enable the first and/or second driving current so that in the given switch passes a first value the ON current, then, after a delay time, enabling the first and/or second driving current so that in the given switch passes a second value of the ON current greater than the first value.
Original (Chinese)
A buck regulator circuit comprises a half bridge comprising high and low side switches driven by a PWM signal, a pair of drivers coupled to a given switch among the high and low side switches to supply selectively first and second driving currents, enabling selectively the first and/or second driving current to supply a current switching on the given switch, an ON current value passing through the given switch at a switch-on depending on which of the first and/or second driving current is enabled, and a timing circuit configured, during the switch-on of the switch, to enable the first and/or second driving current so that in the given switch passes a first value the ON current, then, after a delay time, enabling the first and/or second driving current so that in the given switch passes a second value of the ON current greater than the first value.
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