论文信息 - A high-performance current sensing circuit with full-phase sampling capability

A high-performance current sensing circuit with full-phase sampling capability

A high-performance current sensing circuit with full-phase sampling capability is presented in this paper, which is suitable for DC-DC converters, motor driver circuits, and other control systems requiring current sensing. The proposed structure comprises of three parts, which are level shift, phase identification, and signal rectification. No matter what the phase of the current is, the current sensing circuit in this paper can accurately obtain the current information. Based on a standard 0.35um BCD process, the proposed current sensing circuit has been validated at different temperature points and process corners. The results demonstrate that the circuit can sense full-phase currents within ±1.5% accuracy.

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