Power supply-based compensation
AssigneeNVIDIA Corporation
InventorsOfek Abadi, Naor Peretz
Life of this patent
Estimating the term…
Abstract
An integrated circuit includes an analog-to-digital converter (ADC), associated with a thermal sensor, to determine a present power supply value of a power supply voltage for the thermal sensor. E-fuse registers store a set of calibrated temperature values, from the thermal sensor, for each power supply value of a plurality of power supply values. Control logic is coupled to the ADC and the e-fuse registers. The control logic reads the present power supply value from the ADC and generates, based on the present power supply value and the plurality of power supply values, a calibration equation that relates calibrated temperature values to thermal sensor values for the present power supply value.
Claims20
An integrated circuit comprising:
- an analog-to-digital converter (ADC), associated with a thermal sensor, to determine a present power supply value of a power supply voltage for the thermal sensor;
- a plurality of e-fuse registers to store a set of calibrated temperature values, from the thermal sensor, for each power supply value of a plurality of power supply values;
- and
- control logic coupled to the ADC and the plurality of e-fuse registers, the control logic to:
- read the present power supply value from the ADC;
- and
- generate, based on the present power supply value and the plurality of power supply values, a calibration equation that relates calibrated temperature values to thermal sensor values for the present power supply value.
A system comprising:
- an integrated circuit (IC) die comprising:
- a plurality of thermal sensors powered by a power supply voltage;
- and
- a plurality of e-fuse registers associated with the plurality of thermal sensors;
- a tester unit coupled to the IC die to perform thermal calibration of the IC die, wherein the tester unit comprises calibration logic to, for a first thermal sensor of the plurality of thermal sensors:
- change the power supply voltage to two or more power supply values;
- generate, using the first thermal sensor, calibrated temperature values at each power supply value of the two or more power supply values;
- and
- store, in a set of the plurality of e-fuse registers associated with the first thermal sensor, the calibrated temperature values at each power supply value.
A method comprising:
- reading, using control logic on an integrated circuit, an analog-to-digital converter (ADC) located closest to a thermal sensor, of a plurality of thermal sensors, to determine a present power supply value;
- reading, from a plurality of e-fuse registers that are associated with the thermal sensor, a set of calibrated temperature values for each power supply value of a plurality of power supply values;
- and
- generating, using the control logic, based on the present power supply value and the plurality of power supply values, a calibration equation that relates calibrated temperature values to thermal sensor values for the present power supply value.
Dependencies are inferred from the claim text.