Modeling power budget requirements of implantable electronic devices

We present in this paper a new analytical, empirical and behavioral modular model developed for accurate evaluation of power dissipation in a power conversion chain dedicated to power up an electronic implantable device. The model is suitable for power estimation/planning in early design stages, to determine the contribution of each circuit module on the total power consumption and to estimate the input and output voltages of each module. The model takes into account the influence of the dynamic and static losses. The parasitic capacitances associated with charge pump stages were also considered. The model demonstrates the dependence of power on several main design parameters. It is built based on average power consumption and is coded in Verilog-A. The model is flexible and robust to changes in design parameters and provides accurate and valid results over a wide range of parameter values.