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US 12,535,841 B2Granted
Regulator circuit for parallel configuration and user device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsHyunseok Nam, Seongmun Park
Life of this patent
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Abstract
A regulator circuit includes a first linear regulator circuit, configured to control a voltage on an output node based on a first reference voltage and to provide first current to the output node, and a second linear regulator circuit, connected in parallel to the first linear regulator circuit and configured to provide second current to the output node, and the second linear regulator circuit is further configured to control a magnitude of the second current based on a magnitude of the first current.
Claims19
A regulator circuit comprising:
- a first linear regulator circuit configured to control a voltage on an output node based on a first reference voltage and to provide a first current to the output node, the first linear regulator circuit including a first voltage compensator configured to generate a first error voltage based on a difference between the first reference voltage and a first feedback voltage, the first feedback voltage provided to the first voltage compensator being a selected one of a first voltage sensing feedback voltage or a first current sensing feedback voltage based on a selection control signal;
- and
- a second linear regulator circuit connected in parallel to the first linear regulator circuit and configured to provide a second current to the output node, wherein the second linear regulator circuit is further configured to control a magnitude of the second current based on a magnitude of the first current.
A regulator circuit comprising:
- a first linear regulator circuit to an n-th linear regulator circuit, n being an integer greater than or equal to 3, wherein
- a n−1-th linear regulator circuit comprises a n−1-th voltage compensator configured to generate a first error voltage based on at least an n−1-th current sensing feedback voltage, the n−1-th current sensing feedback voltage being based on a magnitude of the n−1-th current,
- the n-th linear regulator circuit comprises an n-th voltage compensator configured to generate a second error voltage based on at least an n-th current sensing feedback voltage, the n-th current sensing feedback voltage being based on a magnitude of the n-th current,
- the first linear regulator circuit to the n-th linear regulator circuit are connected to an output node in parallel and respectively provide a first current to n-th current to the output node,
- the first linear regulator circuit is configured to control a voltage on the output node based on a first reference voltage, and
- a second linear regulator circuit to the n-th linear regulator circuit are configured to control magnitudes of a second current to the n-th current based on a magnitude of the first current.
3 more elements
A linear regulator circuit comprising:
- a first voltage compensator configured to generate a first error voltage based on a difference between a first reference voltage and a first feedback voltage;
- a first power transistor connected between an output node and a power supply voltage terminal and configured to receive the first error voltage;
- a first switching circuit configured to select one of a plurality of input voltages in response to a selection control signal and to provide the first reference voltage to the first voltage compensator;
- and
- a second switching circuit configured to provide either one of a voltage sensing feedback voltage and a first current sensing feedback voltage based on first current flowing to the output node as the first feedback voltage, the voltage sensing feedback voltage being a division of a voltage on the output node.
2 more elements
Dependencies are inferred from the claim text.