STABLE DIGITAL INTEGRATOR CIRCUIT FOR BOOST CONVERTER
First Claim
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1. An electrical device, comprising:
- an integrated circuit having;
device circuitry; and
a boost converter coupled to the device circuitry, wherein the boost converter comprises a digital integrator circuit having;
a first comparator;
a second comparator;
a counter configured to count up, count down, and pause based on a first output signal provided by the first comparator and based on a second output signal provided by the second comparator; and
a digital-to-analog converter (DAC) configured to provide a feedback adjustment signal for the boost converter based on a count value provided by the counter.
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Abstract
An electrical device includes an integrated circuit having device circuitry and a boost converter coupled to the device circuitry. The boost converter includes a digital integrator circuit having: a first comparator; a second comparator; a counter configured to count up, count down, and pause based on a first output signal provided by the first comparator and based on a second output signal provided by the second comparator; and a digital-to-analog converter (DAC) configured to provide a feedback adjustment signal for the boost converter based on a count value provided by the counter.
9 Citations
21 Claims
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1. An electrical device, comprising:
an integrated circuit having; device circuitry; and a boost converter coupled to the device circuitry, wherein the boost converter comprises a digital integrator circuit having; a first comparator; a second comparator; a counter configured to count up, count down, and pause based on a first output signal provided by the first comparator and based on a second output signal provided by the second comparator; and a digital-to-analog converter (DAC) configured to provide a feedback adjustment signal for the boost converter based on a count value provided by the counter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A boost converter circuit, comprising:
a control circuit with an inner loop and an outer loop, wherein the outer loop comprises; a digital integrator circuit having; a first comparator with input nodes and an output node; a second comparator with two input nodes and an output node; a counter with a first input node coupled to the output node of the first comparator and with a second input node coupled to the output node of the second comparator; and a digital-to-analog converter (DAC) coupled to an output node of the counter, wherein an output of the DAC is a feedback adjustment signal used by the control circuit to determine an on-time for the power switch. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method, comprising:
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receiving a target reference for an output voltage; providing a feedback adjustment signal for an inner loop of a boost converter based on a digital counter with a count up function, a count down function, and a pause function; and regulating the output voltage of the boost converter based on the reference target and the feedback adjustment signal. - View Dependent Claims (18, 19, 20, 21)
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Specification