Digital logic controller for regulating voltage of a system on chip
First Claim
1. A digital logic controller for regulating a voltage of a system on chip, the digital logic controller comprising:
- a first input for receiving a first signal, the first signal being a reference signal and having a first property that is at least substantially constant over a range of operating conditions of the system on chip;
a second input for receiving a second signal, the second signal having a second property that is indicative of an operating condition of the system on chip, the second property being variable over the range of operating conditions of the system on chip;
an output; and
a comparator for comparing the first property of the first signal and the second property of the second signal, whereinbased on the comparison, the digital logic controller outputs to a voltage regulator, via the output, a regulation signal for regulating the voltage of the system on chip at or near a target voltage a predetermined amount higher than a minimum operating voltage of the system on chip, wherein the predetermined amount includes a worst case voltage drop in the System on chip due to peak current consumption.
30 Assignments
0 Petitions
Accused Products
Abstract
A digital logic controller for regulating a voltage of a SoC includes a first input for receiving a reference signal having a first property that is constant over a range of operating conditions of the SoC, and a second input for receiving a second signal that has a second property that is indicative of an operating condition of the SoC. The second property may vary over a range of operating conditions of the SoC. A comparator compares the first and second properties and the digital logic controller, based on the comparison, outputs to a regulation signal to a voltage regulator to regulate the voltage of the SoC at or near a target voltage that is higher than a minimum operating voltage of the SoC.
-
Citations
20 Claims
-
1. A digital logic controller for regulating a voltage of a system on chip, the digital logic controller comprising:
-
a first input for receiving a first signal, the first signal being a reference signal and having a first property that is at least substantially constant over a range of operating conditions of the system on chip; a second input for receiving a second signal, the second signal having a second property that is indicative of an operating condition of the system on chip, the second property being variable over the range of operating conditions of the system on chip; an output; and a comparator for comparing the first property of the first signal and the second property of the second signal, wherein based on the comparison, the digital logic controller outputs to a voltage regulator, via the output, a regulation signal for regulating the voltage of the system on chip at or near a target voltage a predetermined amount higher than a minimum operating voltage of the system on chip, wherein the predetermined amount includes a worst case voltage drop in the System on chip due to peak current consumption. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system on chip (SoC), comprising:
-
a first signal generator for generating a first signal, the first signal being a reference signal and having a first property that is at least substantially constant over a range of operating conditions of the system on chip; a second signal generator for generating a second signal having a second property that is indicative of an operating condition of the system on chip, the second property being variable over the range of operating conditions of the system on chip; a voltage regulator; and a digital logic controller comprising; a first input for receiving the first signal; a second input for receiving the second signal; an output; and a comparator for comparing the first property of the first signal and the second property of the second signal, wherein based on the comparison, the digital logic controller outputs to the voltage regulator, via the output, a regulation signal for regulating the voltage of the system on chip at or near a target voltage that is a predetermined amount higher than a minimum operating voltage of the system on chip, wherein the predetermined amount includes a worst case voltage drop in the SoC due to peak current consumption. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A method for regulating a voltage of a system on chip, the method comprising:
-
providing a digital logic controller comprising; a first input; a second input; an output; and a comparator; receiving, at the first input of the digital logic controller, a first signal generated by a first signal generator, the first signal being a reference signal and having a first property which is at least substantially constant over a range of operating conditions of the system on chip; receiving, at the second input of the digital logic controller, a second signal generated by a second signal generator, the second signal having a second property which is indicative of an operating condition of the system on chip, the second property being variable over the range of operating conditions of the system on chip; comparing, using the comparator, the first property of the first signal and the second property of the second signal; and
in dependence of the comparison, regulating the voltage of the system on chip at or near a target voltage a predetermined amount higher than a minimum operating voltage of the system on chip by outputting, via the output of the digital logic controller, a regulation signal to a voltage regulator, wherein the predetermined amount includes a worst case voltage drop in the system on chip due to peak current consumption.
-
Specification