DC-DC converter and method
First Claim
1. A method for compensating errors in a DC-DC converter, comprising:
- providing a first signal path having at least one circuit element;
providing a second signal path having at least one circuit element; and
switching one of the first or second signal paths into an error correction mode to compensate for errors in the at least one circuit element in the first or second signal path that is in the error correction mode, wherein the other signal path of the first or second signal path is in a normal operating mode.
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0 Petitions
Accused Products
Abstract
A DC-DC converter and method for compensating for errors in the DC-DC converter. The DC-DC converter includes an inductor coupled for receiving a source of operating voltage through a plurality of switches. The switches are controlled by a control circuit that has first and second circuit paths that are substantially parallel to each other. Each circuit path is comprised of two switched capacitor comparators that are connected in series. The circuit paths function such that during one portion of a clock period one of the circuit paths operates in an error correction mode and the other circuit path operates in a normal mode. During a different portion of the clock period the operational modes of the circuit paths switch. This allows for a calibration interval in a sampled system in which at least one circuit path is always active and responsive to the input signals in a desired manner.
10 Citations
29 Claims
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1. A method for compensating errors in a DC-DC converter, comprising:
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providing a first signal path having at least one circuit element; providing a second signal path having at least one circuit element; and switching one of the first or second signal paths into an error correction mode to compensate for errors in the at least one circuit element in the first or second signal path that is in the error correction mode, wherein the other signal path of the first or second signal path is in a normal operating mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of correcting for offset error in a DC-DC converter, comprising:
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generating a first signal in response to a reference signal and a converter output signal, the first signal comprising a first sub-signal and a second sub-signal; generating a second signal in response to the reference signal and the converter output signal, the second signal comprising a third sub-signal and a fourth sub-signal; correcting a first offset error in the first signal during a first period of a clock signal; and correcting a second offset error in the second signal during a second period of the clock signal, the first and second periods being different periods. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A DC-DC converter, comprising:
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a control circuit having a plurality of inputs and a plurality of outputs, wherein the control circuit comprises; a first circuit path having first and second inputs and an output; and a second circuit path having first and second inputs and an output, wherein the first and second circuit paths cooperate to provide offset cancellation of errors in elements of the first and second circuit paths; and a switching network coupled to the control circuit. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification