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This paper proposes a monolithic capacitor-current-controlled hysteretic buck converter with a transient-optimized feedback circuit (TOFC) for compact-sized portable devices. The proposed TOFC simultaneously optimizes both load and dynamic voltage scaling (DVS) transient responses to minimize output voltage undershoot/overshoot and settling time. In addition, a transient-hold (TH) technique, which...
This paper proposes a monolithic capacitor-current-controlled hysteretic buck converter with a transient-optimized feedback circuit (TOFC) and a transient-hold (TH) technique. The proposed TOFC simultaneously optimizes both load and dynamic voltage scaling (DVS) transient responses. In addition, the proposed TH technique significantly reduces the required compensation capacitance to save chip area...
Dc-dc Buck converter has a major application for powering integrated circuit under stringent regulation, nowadays. In this paper, a practical digital control algorithm is presented to achieve the optimal response for dc-dc Buck converters without relying on the knowledge of the passive component value (inductance and capacitance). This algorithm introduces the curve fitting analysis for deriving the...
Recently, optimal control on Buck converter for powering the latest computer central processor units (CPUs) has attracted more and more attention. In this paper, a novel digital control algorithm is presented to achieve the time-optimal response for dc-dc Buck converters without relying on any knowledge of converter design parameters such as output inductance, capacitance and even ESR value. This...
This paper presents an integrated DC-DC buck converter using the synthetic ripple hysteresis control scheme with a fast transient path to define the boundary of hysteresis band. The hysteresis band and switching frequency depend on load current changes; therefore, it accelerates regulation and reduces overshoot. Full chip simulation results indicated output voltage recovery time is shortened within...
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