Saving power when in or transitioning to a static mode of a processor by using feedback-configured voltage regulator
First Claim
Patent Images
1. A circuit comprising:
- an input terminal;
an output terminal;
a voltage regulator coupled to the input and output terminals and including a feedback terminal, wherein the voltage regulator is configured to provide a selected regulated voltage value from a range of regulated voltage values at the output terminal; and
a feedback circuit coupled to the output and feedback terminals and configured to reduce the selected regulated voltage value in response to a control signal to the feedback circuit.
7 Assignments
0 Petitions
Accused Products
Abstract
A method for reducing power utilized by a processor including the steps of determining that a processor is transitioning from a computing mode to a mode is which system clock to the processor is disabled, and reducing core voltage to the processor to a value sufficient to maintain state during the mode in which system clock is disabled.
123 Citations
20 Claims
-
1. A circuit comprising:
-
an input terminal; an output terminal; a voltage regulator coupled to the input and output terminals and including a feedback terminal, wherein the voltage regulator is configured to provide a selected regulated voltage value from a range of regulated voltage values at the output terminal; and a feedback circuit coupled to the output and feedback terminals and configured to reduce the selected regulated voltage value in response to a control signal to the feedback circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A circuit comprising:
-
an input terminal; an output terminal; a voltage regulator coupled to the input and output terminals and including a feedback terminal, wherein the voltage regulator is configured to provide a selected regulated voltage value from a range of regulated voltage values at the output terminal; a first resistor including a first terminal coupled to the output terminal and a second terminal coupled to the feedback terminal; a second resistor including a third terminal and a fourth terminal that is coupled to the feedback terminal and to the second terminal; and a transistor including a control terminal configured to receive a control signal, a terminal coupled to the third terminal, and another terminal configured to couple to a voltage source with a voltage value that is greater than the selected regulated voltage value. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A method comprising:
-
regulating a selected voltage value at an output terminal by using a circuit including a voltage regulator coupled to the output terminal and a feedback circuit coupled to a feedback terminal of the voltage regulator and to the output terminal; if a control signal to the feedback circuit does not indicate a clock signal is to be stopped, maintaining the selected voltage value in manner that is unaltered by the feedback circuit; and if the control signal to the feedback circuit indicates the clock signal is to be stopped, reducing the selected voltage value by using the feedback circuit. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification