An Adaptive Power Management Integrated Circuit for Sensor Readout Systems
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초록
This paper proposes an adaptive wireless power management IC for implantable sensor systems like smart IOL (Intraocular Lens). Depending on the phase, the system operates the sub-circuits with adaptive on/off for low power operation and reducing the noise effect of the inductive link. The adaptive PMIC selectively turns the circuit on/off, which reduces the load power, thereby generating a high DC voltage with a low ac voltage. If power is charged enough, the wireless power transfer (WPT) is cut off and the circuit is driven by internal power. A supply-change circuit and a phase detector automatically change the power supply and phase, respectively. The proposed wireless system can be used for noise-sensitive implantable sensor systems and is built with 180 nm standard process that supports 1.8V/5V transistors. The wireless system operates at a carrier frequency of 13.56MHz.
Abstract
This paper proposes an adaptive wireless power management IC for implantable sensor systems like smart IOL (Intraocular Lens). Depending on the phase, the system operates the sub-circuits with adaptive on/off for low power operation and reducing the noise effect of the inductive link. The adaptive PMIC selectively turns the circuit on/off, which reduces the load power, thereby generating a high DC voltage with a low ac voltage. If power is charged enough, the wireless power transfer (WPT) is cut off and the circuit is driven by internal power. A supply-change circuit and a phase detector automatically change the power supply and phase, respectively. The proposed wireless system can be used for noise-sensitive implantable sensor systems and is built with 180 nm standard process that supports 1.8V/5V transistors. The wireless system operates at a carrier frequency of 13.56MHz.
참고문헌 (17)
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