Compensation circuit method of operations thereof and converter employing the same
First Claim
1. For use with a switched-mode power converter having a modulator that develops a drive signal for a power switch, a compensation circuit, comprising:
- a sensor that senses an output characteristic of said converter; and
a filter, coupled to said sensor, that develops an intermediate signal representing a change in said output characteristic, said modulator adjusting a switching period of said drive signal as a function of said intermediate signal thereby to decrease a reaction delay of said converter.
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Accused Products
Abstract
For use with a switched-mode power converter having a modulator that develops a drive signal for a power switch, a compensation circuit, a method of compensating for a change in an output characteristic of the converter and a converter employing the circuit or the method. In one embodiment the compensation circuit includes (1) a sensor that senses the output characteristic and (2) a filter, coupled to the sensor, that develops an intermediate signal representing a change in the output characteristic. The modulator adjusts a switching period of the drive signal as a function of the intermediate signal thereby to decrease a reaction delay of the converter.
60 Citations
22 Claims
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1. For use with a switched-mode power converter having a modulator that develops a drive signal for a power switch, a compensation circuit, comprising:
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a sensor that senses an output characteristic of said converter; and a filter, coupled to said sensor, that develops an intermediate signal representing a change in said output characteristic, said modulator adjusting a switching period of said drive signal as a function of said intermediate signal thereby to decrease a reaction delay of said converter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. For use with a switched-mode power converter having a modulator that develops a drive signal for a power switch, a method of compensating for a change in an output characteristic of said converter, comprising:
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sensing said output characteristic of said converter; developing an intermediate signal representing said change in said output characteristic, and adjusting a switching period of said drive signal as a function of said intermediate signal thereby to decrease a reaction delay of said converter. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A switched-mode power converter, comprising:
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at least one power switch; a modulator, coupled to said power switch, that develops a drive signal for said power switch; and a compensation circuit, comprising; a sensor that senses an output characteristic of said converter; and a filter, coupled to said sensor, that develops an intermediate signal representing a change in said output characteristic, said modulator adjusting a switching period of said drive signal as a function of said intermediate signal thereby to decrease a reaction delay of said converter. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification