Supply voltage droop control circuits for reducing or avoiding supply voltage droops

摘要

Supply voltage droop control circuits for reducing or avoiding supply voltage droops are disclosed. The supply voltage drop management circuit includes an interrupt circuit configured to receive event signals generated by the functional circuit. The event signals correspond to operating events occurring in the functional circuit and increase the load current demand on the power supply supplying power to the functional circuit, resulting in a supply voltage droop. The interrupt circuit is configured to generate an interrupt signal in response to the received event signal. The memory includes an operation event-frequency table having entries having a target frequency corresponding to an operation event. Operating the functional circuit at the target frequency reduces the load current demand and supply voltage droop for the power supply. The clock control circuit is configured to generate a clock frequency adjustment signal that causes the clock generator to adjust to the target frequency to access the memory to determine the target frequency to receive the interrupt signal.