An integrated power recovery module dedicated to Implantable electronic devices
This paper concerns the design and implementation of an inductively coupled RF telemetry for both power and data transferring to implantable microelectronic devices. The major shortcomings of available inductive powering designs are their low power-transfer efficiency and large size of the implantable unit. Therefore, there is a need to fully integrate interfacing module of the implantable unit. The presented power recovery module is dedicated to the biotelemetry application of cortical/nerve stimulation. The proposed strategy allows providing dual regulated output voltages 3.3 V/1.8 V to the electrodes driver and other implantable circuitry, respectively. Its low dropout voltage makes high power efficiency attainable. Fabricated integrated prototype in a CMOS 0. 18 &mu; m technology has demonstrated its feasibility, providing a load current driving ability of 5 mA for each one of the two supply voltages.
inductive powering biotelemetry power efficiency ldo regulator switched-capacitor dc/dc converter