US 2003/0125922 A1 · Mechanism for estimating and controlling di/dt-induced power supply voltage variations

Abstract

A system for delivering power to a device in a specified voltage range is disclosed. The system includes a power delivery network, characterized by a response function, to deliver power to the device. A current computation unit stores values representing a sequence of current amplitudes drawn by the device on successive clock cycles, and provides them to a current to voltage computation unit. The current to voltage computation unit filters the current amplitudes according to coefficients derived from the response function to provide an estimate of the voltage seen by the device. Operation of the device is adjusted if the estimated voltage falls outside the specified range.

Claims25

Dependent claims

A system comprising:

a power delivery network to provide power in a specified voltage range, the network being characterized by response function;
and
a device to draw power from the network, the device including;
a first shift register to store values representing a sequence of current amplitudes drawn by the device on successive clock cycles;
an adder having inputs weighted to reflect the response function of the power delivery network, the adder to determine a weighted sum of the sequence of current amplitudes to estimate a voltage provided to the device.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/040,582Filed 28 Dec 2001

Published

3 Jul 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06F 1/3296
Power saving characterised by the action undertaken: by lowering the supply or operating voltage
G06F 1/26
Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00: power supply means, e.g. regulation thereof
G06F 1/3203
Means for saving power: power management, i.e. event-based initiation of a power-saving mode
G06F 30/367
Circuit design at the analogue level: design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE],…

Mechanism for estimating and controlling di/dt-induced power supply voltage variations

Life of this patent

Mechanism for estimating and controlling di/dt-induced power supply voltage variations

Life of this patent

Abstract

Claims25