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US 7,064,528 B2Granted
Droop amplifier circuit
AssigneeIntersil Americas Inc.
InventorsThomas A. Jochum, John S. Kleine
Life of this patent
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AssigneeIntersil Americas Inc.
InventorsThomas A. Jochum, John S. Kleine
Estimating the term…
A droop amplifier circuit for a DC-DC regulator including an amplifier, at least one first resistive device, a second resistive device, a third resistive device, and a first capacitive device. Each first resistive device is coupled between an output inductor (phase node or current sense node) and the amplifier's non-inverting input. The first capacitive device is coupled between the regulator output and the amplifier's output. The second resistive device is coupled between the regulator output and the amplifier's inverting input. The third resistive device is coupled between the amplifier's inverting input and output. A second capacitive device may be coupled between the regulator output and the amplifier's non-inverting input. A fourth resistive device may be coupled in parallel with the second capacitive device. A relatively small, simple and low performing amplifier is sufficient. Circuit area and power are reduced, and low input offset voltage is more easily achieved.
A droop amplifier circuit for a DC-DC regulator with at least one output inductor coupled between a corresponding one of at least one phase node and an output, comprising:
A multiphase DC-DC converter, comprising:
Dependencies are inferred from the claim text.