INSTRUMENTING SWITCH MODE POWER SUPPLY TO MEASURE CIRCUIT POWER CONSUMPTION
First Claim
1. A circuit comprising:
- a pulse generator configured to generate pulses;
a switch mode power supply coupled to the pulse generator, the switch mode power supply including a switching component configured to transfer a charge to an energy storage component in response to pulses provided by the pulse generator;
a pulse counter coupled to the pulse generator or the switching component and configured to count pulses over a time period to thereby generate a pulse count; and
a converter coupled to the pulse counter and configured to generate a power measurement for the time period based on the pulse count.
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Abstract
A circuit includes a pulse generator coupled to a switch mode power supply. The switch mode power supply includes a switching component configured for transferring a charge to an energy storage component in response to pulses provided by the pulse generator. A pulse counter is coupled to the pulse generator or the switching component and configured to count pulses over a time period and thereby generate a pulse count. A converter coupled to the pulse counter is configured to generate a power measurement for the time period based on the pulse count. If the switch mode power supply has different modes of operation, a different counter may be used for each mode.
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Citations
29 Claims
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1. A circuit comprising:
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a pulse generator configured to generate pulses; a switch mode power supply coupled to the pulse generator, the switch mode power supply including a switching component configured to transfer a charge to an energy storage component in response to pulses provided by the pulse generator; a pulse counter coupled to the pulse generator or the switching component and configured to count pulses over a time period to thereby generate a pulse count; and a converter coupled to the pulse counter and configured to generate a power measurement for the time period based on the pulse count. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system comprising:
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a pulse generator configured to generate pulses; a switch mode power supply coupled to the pulse generator, the switch mode power supply including a switching component configured to transfer a charge to an energy storage component in response to pulses provided by the pulse generator; a pulse counter coupled to the pulse generator or the switching component and configured to count pulses over a time period to thereby generate a pulse count; a central processing unit; and a bus coupled to the central processing unit and one or more registers storing the pulse count, where the central processing unit is operable in response to executing a set of stored instructions to access the pulse count over the system bus, to determine a system power consumption from the pulse count and to initiate a system power consumption reduction. - View Dependent Claims (14)
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15. A method of measuring power consumption, the method comprising:
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generating, by a pulse generator, pulses for operating a switching component in a switch mode power supply of a circuit; in response to the pulses, transferring a charge to an energy storage component of the circuit; counting, by a pulse counter, the pulses over a time period of time to thereby generate a pulse count; and generating a power measurement for the time period based on the pulse count. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification