Inductance based parallel amplifier phase compensation
First Claim
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1. Circuitry comprising:
- a parallel amplifier having a feedback input and a parallel amplifier output; and
a switching supply comprising;
switching circuitry having a switching circuitry output;
a first inductive element coupled between the switching circuitry output and the feedback input; and
a second inductive element coupled between the feedback input and the parallel amplifier output, wherein the first inductive element has a first inductance and the second inductive element has a second inductance, such that a magnitude of the first inductance is at least 10 times greater than a magnitude of the second inductance.
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Abstract
A direct current (DC)-DC converter, which includes a parallel amplifier and a switching supply, is disclosed. The switching supply includes switching circuitry, a first inductive element, and a second inductive element. The parallel amplifier has a feedback input and a parallel amplifier output. The switching circuitry has a switching circuitry output. The first inductive element is coupled between the switching circuitry output and the feedback input. The second inductive element is coupled between the feedback input and the parallel amplifier output.
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Citations
27 Claims
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1. Circuitry comprising:
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a parallel amplifier having a feedback input and a parallel amplifier output; and a switching supply comprising; switching circuitry having a switching circuitry output; a first inductive element coupled between the switching circuitry output and the feedback input; and a second inductive element coupled between the feedback input and the parallel amplifier output, wherein the first inductive element has a first inductance and the second inductive element has a second inductance, such that a magnitude of the first inductance is at least 10 times greater than a magnitude of the second inductance. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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2. Circuitry comprising:
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a parallel amplifier having a feedback input and a parallel amplifier output, and adapted to partially provide a first power supply output signal via the parallel amplifier output based on a voltage setpoint; and a switching supply comprising; switching circuitry having a switching circuitry output; a first inductive element coupled between the switching circuitry output and the feedback input; and a second inductive element coupled between the feedback input and the parallel amplifier output, wherein the switching supply is adapted to partially provide the first power supply output signal via the first inductive element and the second inductive element. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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21. Circuitry comprising:
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a parallel amplifier having a feedback input and a parallel amplifier output; and a switching supply comprising; switching circuitry having a switching circuitry output; a first inductive element coupled between the switching circuitry output and the feedback input; and a second inductive element coupled between the feedback input and the parallel amplifier output, wherein; the switching supply further comprises a filter capacitive element coupled between the parallel amplifier output and a ground; the first inductive element, the second inductive element, and the filter capacitive element form a first low-pass filter having a first cutoff frequency; and the second inductive element, and the filter capacitive element form a second low-pass filter having a second cutoff frequency. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification