System and Method of Changing a PWM Power Spectrum
First Claim
Patent Images
1. A circuit comprising:
- a pulse edge control circuit to receive at least one pulse-width modulated (PWM) signal from a PWM source, the pulse edge control circuit adapted to selectively swap the at least one PWM signal with a logic inverted, duty-cycle complement of the at least one PWM signal to produce at least one modulated PWM signal having a changed power spectrum, the pulse edge control circuit to provide the at least one modulated PWM signal to at least one output of the pulse edge control circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
In a particular embodiment, a circuit device includes a pulse edge control circuit to receive at least one pulse-width modulated (PWM) signal from a PWM source. The pulse edge control circuit is adapted to selectively invert and swap the at least one PWM signal with a logic-inverted duty-cycle complement of the at least one PWM signal at discrete time intervals to produce at least one modulated PWM signal having a changed power spectrum. The pulse edge control circuit provides the at least one modulated PWM signal to at least one output of the pulse edge control circuit.
60 Citations
26 Claims
-
1. A circuit comprising:
a pulse edge control circuit to receive at least one pulse-width modulated (PWM) signal from a PWM source, the pulse edge control circuit adapted to selectively swap the at least one PWM signal with a logic inverted, duty-cycle complement of the at least one PWM signal to produce at least one modulated PWM signal having a changed power spectrum, the pulse edge control circuit to provide the at least one modulated PWM signal to at least one output of the pulse edge control circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
11. A system comprising:
-
an input terminal configurable to receive a PWM signal pair; an output terminal; a pulse edge control circuit coupled to the input terminal and adapted to selectively apply a chopping operation to the PWM signal pair to produce a modulated PWM output having a changed power spectrum, the pulse edge control circuit to provide the modulated PWM output to the output terminals. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A method comprising:
-
receiving at least one pulse-width modulated (PWM) signal at a pulse edge control circuit; selectively swapping the at least one PWM signal with an logic inverted, duty cycle complement of the at least one PWM signal to produce at least one modulated PWM signal having a changed power spectrum; and providing the at least one modulated PWM signal to a corresponding at least one output. - View Dependent Claims (22, 23, 24, 25, 26)
-
Specification