Active ripple reduction switched mode power supplies
First Claim
Patent Images
1. A system comprising:
- a) a switched mode power supply; and
b) active ripple reduction circuitry adapted to;
i) sense an output ripple of the switched mode power supply;
ii) provide a ripple reduction signal inversely related to the output ripple; and
iii) provide the ripple reduction signal to an output of the switched mode power supply, thereby combining the ripple reduction signal and the output ripple such that the output ripple is substantially reduced.
4 Assignments
0 Petitions
Accused Products
Abstract
A system and method are provided for actively reducing ripple in a supply voltage provided by a switched mode power supply. In general, active ripple reduction circuitry operates to sense the ripple in the supply voltage to provide a signal indicative of the ripple. The signal indicative of the ripple is inverted and provided to the output of the switched mode power supply to substantially reduce or eliminate the ripple in the supply voltage.
-
Citations
20 Claims
-
1. A system comprising:
-
a) a switched mode power supply; and b) active ripple reduction circuitry adapted to; i) sense an output ripple of the switched mode power supply; ii) provide a ripple reduction signal inversely related to the output ripple; and iii) provide the ripple reduction signal to an output of the switched mode power supply, thereby combining the ripple reduction signal and the output ripple such that the output ripple is substantially reduced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for actively reducing an output ripple in a supply voltage provided by a switched mode power supply comprising:
-
sensing the output ripple of the switched mode power supply; providing a ripple reduction signal inversely related to the output ripple; and providing the ripple reduction signal to an output of the switched mode power supply, thereby combining the ripple reduction signal and the output ripple such that the output ripple is substantially reduced. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A system for actively reducing an output ripple in a supply voltage provided by a switched mode power supply comprising:
-
means for sensing the output ripple of the switched mode power supply; means for providing a ripple reduction signal inversely related to the output ripple; and means for providing the ripple reduction signal to an output of the switched mode power supply, thereby combining the ripple reduction signal and the output ripple such that the output ripple is substantially reduced. - View Dependent Claims (17, 18, 19, 20)
-
Specification