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US 6,664,834 B2Granted
Method for automatic duty cycle control using adaptive body bias control
AssigneeIntel Corporation
InventorsRajendran Nair, Chantal E. Wright
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Abstract
A method including sensing a duty cycle, measuring the variation of the duty cycle from a desired duty cycle, and differentially adjusting the rising and falling edges of the duty cycle is disclosed.
Claims34
A method comprising:
- seeing a signal having a duty cycle, output from an inverter;
- measuring the variation of the duty cycle from a desired duty cycle;
- differentially adjusting the rising and falling edges of the duty cycle;
- and
- adaptively adjusting first body bias of a p-FET transistor of an inverter with the control voltage.
2 more elements
The apparatus of claim 6, wherein said means for measuring further comprises:
- means for generating a control voltage.
An apparatus comprising:
- an inverter to output a signal having a duty cycle
- a low pass filter to measure a variation of the duty cycle from a desired duty cycle;
- and
- a charge pump to differentially adjust the rising and falling edges of the duty cycle.
1 more element
An apparatus comprising:
- a unit to sense a duty cycle output from an inverter;
- a unit to measure a v nation of the duty cycle from a selected duty cycle;
- a unit to differentially adjust the rising and falling edges of the duty cycle;
- and
- a unit to adaptively a just a first body bias of a p-FET transistor of an inverter with the control voltage.
2 more elements
An apparatus comprising:
- a unit to sense a duty cycle output from an inverter;
- a unit to measure a v nation of the duty cycle from a selected duty cycle;
- a unit to differentially adjust the rising and falling edges of the duty cycle;
- and
- a unit to adaptively a just a first body bias of an n-FET transistor of an inverter with the control voltage.
2 more elements
An apparatus comprising:
- means for sensing a duty cycle, output from an inverter;
- means for measuring the variation of the duty cycle from a desired duty cycle;
- means for differentially adjusting the rising and falling edges of the duty cycle;
- and
- means for adaptively adjusting a first body bias of an n-FET transistor of an inverter with the control voltage.
2 more elements
A method comprising:
- sensing a signal having a duty cycle, output from an inverter;
- measuring the variation of the duty cycle from a desired duty cycle;
- differentially adjusting the rising and falling edges of the duty cycle;
- and
- adaptively adjusting first body bias of an n-FET transistor of an inverter with the control voltage.
2 more elements
Dependencies are inferred from the claim text.