Dual parallel amplifier based DC-DC converter
First Claim
Patent Images
1. Circuitry comprising:
- switching circuitry having a switching circuitry output;
a first parallel amplifier having a first feedback input and a first parallel amplifier output, such that a first inductive element is coupled between the switching circuitry output and the first feedback input; and
the first parallel amplifier is configured to partially provide a first power supply output signal via the first parallel amplifier output and a second inductive element based on a voltage setpoint; and
a second parallel amplifier having a second feedback input and a second parallel amplifier output, such that the second inductive element is coupled between the first feedback input and the second feedback input.
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Abstract
A direct current (DC)-DC converter, which includes switching circuitry, a first parallel amplifier, and a second parallel amplifier, is disclosed. The switching circuitry has a switching circuitry output. The first parallel amplifier has a first feedback input and a first parallel amplifier output. The second parallel amplifier has a second feedback input and a second parallel amplifier output. A first inductive element is coupled between the switching circuitry output and the first feedback input. A second inductive element is coupled between the first feedback input and the second feedback input.
296 Citations
26 Claims
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1. Circuitry comprising:
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switching circuitry having a switching circuitry output; a first parallel amplifier having a first feedback input and a first parallel amplifier output, such that a first inductive element is coupled between the switching circuitry output and the first feedback input; and
the first parallel amplifier is configured to partially provide a first power supply output signal via the first parallel amplifier output and a second inductive element based on a voltage setpoint; anda second parallel amplifier having a second feedback input and a second parallel amplifier output, such that the second inductive element is coupled between the first feedback input and the second feedback input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. Circuitry comprising:
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switching circuitry having a switching circuitry output; a first parallel amplifier having a first feedback input and a first parallel amplifier output, such that a first inductive element is coupled between the switching circuitry output and the first feedback input; and a second parallel amplifier having a second feedback input and a second parallel amplifier output, such that a second inductive element is coupled between the first feedback input and the second feedback input, wherein; a third inductive element is coupled between the first parallel amplifier output and the first feedback input; the first parallel amplifier is adapted to partially provide a first power supply output signal via the first parallel amplifier output based on a voltage setpoint; and a phase-shift across the third inductive element at least partially compensates for limited open loop gain of the first parallel amplifier at frequencies above a first frequency threshold.
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19. Circuitry comprising:
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switching circuitry having a switching circuitry output; a first parallel amplifier having a first feedback input and a first parallel amplifier output, such that a first inductive element is coupled between the switching circuitry output and the first feedback input; and a second parallel amplifier having a second feedback input and a second parallel amplifier output, such that a second inductive element is coupled between the first feedback input and the second feedback input, wherein; a third inductive element is coupled between the first parallel amplifier output and the first feedback input; and the first inductive element has a first inductance, the second inductive element has a second inductance, and the third inductive element has a third inductance, such that a magnitude of the first inductance is at least ten times greater than a magnitude of the third inductance. - View Dependent Claims (20)
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21. Circuitry comprising:
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switching circuitry having a switching circuitry output; a first parallel amplifier having a first feedback input and a first parallel amplifier output, such that a first inductive element is coupled between the switching circuitry output and the first feedback input; and a second parallel amplifier having a second feedback input and a second parallel amplifier output, such that a second inductive element is coupled between the first feedback input and the second feedback input, wherein; a third inductive element is coupled between the first parallel amplifier output and the first feedback input; and a fourth inductive element is coupled between the second parallel amplifier output and the second feedback input. - View Dependent Claims (22, 23, 24)
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25. Circuitry comprising:
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switching circuitry having a switching circuitry output; a first parallel amplifier having a first feedback input and a first parallel amplifier output, such that a first inductive element is coupled between the switching circuitry output and the first feedback input; and
the first parallel amplifier is configured to partially provide a first power supply output signal via the first parallel amplifier output and a second inductive element based on a voltage setpoint; anda second parallel amplifier having a second feedback input and a second parallel amplifier output, such that the second inductive element and a third inductive element are coupled in series between the first feedback input and the second feedback input.
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26. A method comprising:
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partially providing a first power supply output signal via a series combination of a first inductive element and a second inductive element; partially providing the first power supply output signal via a first parallel amplifier output based on a voltage setpoint and feeding back a voltage to a first feedback input from a first connection node between the first inductive element and the second inductive element; and partially providing the first power supply output signal via a second parallel amplifier output based on the voltage setpoint and feeding back a voltage to a second feedback input from the second inductive element.
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Specification