Performance-driven multi-variable variable supply voltage system for low power design of VLSI circuits and systems

摘要

A method of reducing power consumption of an electric circuit (10) having a primary supply voltage (Vdd) and first (14, 16, 18) and second (12) circuit blocks is discussed. The method includes determining for the first circuit block an operation time for a first critical path of the first circuit block and determining for the second circuit block an operation time of a second critical path of the second circuit block. From those operation times, the method determines that the operation time of the first critical path is faster than the operation time of the second critical path. The method then creates a first supply voltage for the first circuit block that is less than the primary supply voltage in response to determining that the operation time of the first critical path is faster than the operation time of the second critical path. IMAGE