| 摘要 |
A voltage converter includes a power switch having respective charging and discharging control terminals, and an output terminal coupled to a series connected inductor and capacitor. The voltage converter also includes a charging switch coupled to the charging control terminal of the power switch, a discharging switch coupled to the discharging control terminal of the power switch, and a feedback circuit coupling the power switch, charging switch and discharging switch to a node at which the capacitor and inductor are connected. During a charging phase, the charging switch couples the capacitor to the charging control terminal of the power switch, and during a discharging phase, the discharging switch couples the capacitor to the discharging control terminal of the power switch. |
| 主权项 |
1. A voltage converter comprising:
a power switch, coupled between a source of battery potential and a source of reference operating potential, the power switch having respective charging and discharging control terminals configured to receive respective charging and discharging control signals, and an output terminal; an inductor connected in series with a capacitor, the series connected inductor and capacitor being coupled between the output terminal of the power switch and the source of reference operating potential; a charging switch having an output terminal coupled to the charging control terminal of the power switch; a discharging switch having an output terminal coupled to the discharging control terminal of the power switch; a pulse width modulation (PWM) controller controlling the charging switch and discharging switch; a feedback loop directly connecting a node at which the capacitor and inductor are connected to the power switch, charging switch and discharging switch exclusive of the PWM controller, wherein during a charging phase, the charging switch electrically couples the capacitor to the charging control terminal of the power switch, whereby the power switch charges the inductor, and wherein during a discharging phase, the discharging switch electrically couples the capacitor to the discharging control terminal of the power switch, whereby the power switch discharges the inductor. |
