INTEGRATED CIRCUIT WITH LOGIC CIRCUITRY AND MULTIPLE CONCEALING CIRCUITS

摘要

An integrated circuit comprises logic circuitry, organized in a multi-level hierarchy of modules. The integrated circuit comprises multiple sensing circuits. In operation, each modules that draws current entirely through that sensing circuit. The integrated circuit sensing circuit senses an instantaneous current consumption I C of a respective one of the comprises a concealing circuit for each of the sensing circuits. In operation, the concealing circuit receives as input a voltage V C corresponding to the sensed instantaneous current consumption I C of its respective module, and the concealing circuit dissipates an instantaneous power P L such that an instantaneous power sum P TOTAL of the instantaneous power P L and the instantaneous power P C to be dissipated by its respective module is substantially independent of activity of its respective module.