Toward a Self-Regulated Multiple Output Rectifier for Wireless Implantable Biomedical Devices Using Commercial Off-The-Shelf Components

A multi-output self-regulated rectifier without any switching circuitry and separate feedback control circuit is proposed for wirelessly-powered biomedical devices, especially for neural stimulators. The proposed system utilizes the series and parallel resonant configuration for low and high side outputs, respectively, by using only one resonant capacitor. The proposed system provides dual high voltages of ±14 V for neuro-stimulator and low voltage of 2.1 V for operating systems such as read-out and digital circuitries.