Power management architecture and method of modulating oscillator frequency based on voltage supply
a technology of power management and voltage supply, applied in the field of power management architecture and voltage supply modulation frequency, can solve the problems of complex logic control of load to efficiently use voltage supply variation, unfavorable collection of limited and intermittent amounts of energy from an outside source, and consumption of energy by process and circuitry in this complex control
Inactive Publication Date: 2008-10-16
GLOBALFOUNDRIES INC
View PDF17 Cites 22 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0012]In embodiments, the design structure comprises a netlist, which describes the circuit. The design structure resides on storage medium as a data format used for the exchange of layout data of integrated circuits. The design structure includes at least one of test data files, characterization data, verification data, or des
Problems solved by technology
In such devices, it is not uncommon to collect limited and intermittent amounts of energy from an outside source such as, for example, light, vibrations, etc.
Due to this lack of any typical power supply in these devices, the available power is intermittent as is the supply voltage, and as such, the logic clock frequency must be changed to meet timing.
Control of the load (logic) to efficiently use the voltage supply variation is complex and the process and circuitry used in this complex control consumes energy.
In addition, using this type of control in an environment with inexact tolerances will make inefficient use of available power.
However, it is not a trivial task to build such a look-up table since the relationship between voltage and frequency is not a straightforward function; that is, frequency and voltage do not have a linear relationship.
However, the use of a state machine or process is very costly in power consumption.
This, of course, will decrease the overall performance of the device.
Also, the use of a state machine is very complex since it requires a lot of circuitry.
In such a system, the supply voltage cannot be reduced without first reducing the clock frequency.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027]The invention relates to a method and system for modulating frequency based on voltage supply, and more particularly, to a power management architecture and method of modulating oscillator frequency based on voltage supply. The system and method of the invention reduces the complexity and additional control circuitry that consumes energy. The system and method of the invention also removes many of the inexact tolerances from the control that erode efficient use of power.
[0028]In embodiments, the system and method of the invention is configured to modulate the frequency of the oscillator based on the supply voltage in a way that mimics the device operation. By way of example, the transfer function of the oscillator (frequency / power supply) may be open loop (programmed into the oscillator circuit) or closed loop with reference circuits / paths to track device parameters.
[0029]In embodiments, there are several options to accomplish the functionality of the invention with various le...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A method and system for modulating logic clock oscillator frequency based on voltage supply. The system comprises a logic unit having a logic operation and a device to produce self-adjusting clocks to match the logic operation. The device is configured to use supply voltage as an independent variable to optimize device parameters for voltage variations. The invention is also directed to a design structure on which a circuit resides.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a continuation in part of U.S. application Ser. No. 11 / 531,050, filed on Sep. 12, 2006, the disclosure of which is expressly incorporated by reference herein in its entirety.FIELD OF THE INVENTION[0002]The invention relates to a method and system for modulating frequency based on voltage supply, and more particularly, to a power management architecture and method of modulating oscillator frequency based on voltage supply. The invention is also directed to a design structure on which a circuit resides.BACKGROUND DESCRIPTION[0003]For operation in low or ultra-low power environments it is important to be able to operate from a variable power supply. Examples of low power environments include radio frequency ID (RFID) applications, as well as devices which measure vibrations in a structure. In such devices, it is not uncommon to collect limited and intermittent amounts of energy from an outside source such as, for e...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G06F17/50
CPCH03K3/0315
InventorGOODNOW, KENNETH J.OGILVIE, CLARENCE R.REYNOLDS, CHRISTOPHER B.VENTRONE, SEBASTIAN T.WILLIAMS, KEITH R.
OwnerGLOBALFOUNDRIES INC