SoC supply droop compensation
AssigneeChaoyang Semiconductor Jiangyin Technology Co., Ltd.
InventorHassan Ihs
Life of this patent
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Abstract
Droop monitors spread across a system-on-chip (SoC) monitor for voltage droops in regulated supply voltage supplied to logic circuitry of the SoC. In the event of a voltage droop, a clock signal supplied to the logic circuitry is stretched, to temporarily increase a period of the clock signal. The droop monitors may include a sensing delay line provided voltage at the regulated supply voltage, and a reference delay line supplied with a reference voltage, with operations of the delay lines monitored to determine a voltage droop.
Claims14
A system for compensating for voltage droops in power supplied to integrated circuitry, comprising:
- a plurality of droop monitors within an integrated circuit, the droop monitors configured to detect occurrence of a droop in voltage level below a specified level of a regulated supply voltage;
- and
- clock adjustment circuitry configured to stretch a period of a clock signal supplied to portions of the integrated circuit in response to detection of the occurrence of the droop in voltage level below the specified level;
- wherein the droop monitors are configured to monitor a speed of execution of sensing integrated circuitry compared to speed of execution of reference integrated circuitry;
- wherein the sensing integrated circuitry comprises a sensing delay line and the reference integrated circuitry comprises a reference delay line;
- wherein the droop monitors include a lock loop to set a delay of the sensing delay line to a predetermined delay.
A system for compensating for voltage droops in power supplied to integrated circuitry, comprising:
- a plurality of droop monitors within an integrated circuit, the droop monitors configured to detect occurrence of a droop in voltage level below a specified level of a regulated supply voltage;
- and
- clock adjustment circuitry configured to stretch a period of a clock signal supplied to portions of the integrated circuit in response to detection of the occurrence of the droop in voltage level below the specified level;
- wherein the droop monitors are configured to monitor a speed of execution of sensing integrated circuitry compared to speed of execution of reference integrated circuitry;
- wherein the sensing integrated circuitry comprises a sensing delay line and the reference integrated circuitry comprises a reference delay line;
- wherein the droop monitors include a tuning loop to tune a delay of the reference delay line to a delay of the sensing delay line.
Dependencies are inferred from the claim text.