Digital power monitoring circuit and system
First Claim
1. A digital power monitoring circuit for monitoring power through an output inductor of a switching power supply comprises:
- a first analog to digital converter receiving a current sense signal indicative of the current through the output inductor and providing a first digital signal including information regarding the current through the output inductor;
a second analog to digital converter receiving a signal indicative of the output voltage of the switching power supply and providing a second digital signal containing information regarding the output voltage of the switching power supply; and
a convolver circuit operable to receive the first digital signal and the second digital signal and to provide a third digital signal including information regarding the power dissipated across the output inductor based on the first and second digital signals;
wherein said convolver circuit convolves said first digital signal with said second digital signal to produce said third digital signal.
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Accused Products
Abstract
A digital power monitoring circuit for monitoring power through an output inductor of a switching power supply in accordance with an embodiment of the present application includes a first analog to digital converter receiving a current sense signal indicative of the current through the output inductor and providing a first digital signal including information regarding the current through the output inductor, a second analog to digital converter receiving a signal indicative of the output voltage of the switching power supply and providing a second digital signal containing information regarding the output voltage of the switching power supply; and a convolver circuit operable to receive the first digital signal and the second digital signal and to provide a third digital signal including information regarding the power through the output inductor based on the first and second digital signals.
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Citations
16 Claims
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1. A digital power monitoring circuit for monitoring power through an output inductor of a switching power supply comprises:
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a first analog to digital converter receiving a current sense signal indicative of the current through the output inductor and providing a first digital signal including information regarding the current through the output inductor; a second analog to digital converter receiving a signal indicative of the output voltage of the switching power supply and providing a second digital signal containing information regarding the output voltage of the switching power supply; and a convolver circuit operable to receive the first digital signal and the second digital signal and to provide a third digital signal including information regarding the power dissipated across the output inductor based on the first and second digital signals; wherein said convolver circuit convolves said first digital signal with said second digital signal to produce said third digital signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification