Multi-output linear regulator
AssigneePixart Imaging Incorporation
InventorKok-Siang Tan
Life of this patent
Estimating the term…
Abstract
A multi-output linear regulator includes: a main output stage circuit, configured to operably generate a reference output voltage according to a main control voltage; an error amplifier, configured to operably amplify a difference between a reference voltage and a feedback signal to generate the main control voltage, wherein the feedback signal is related to the reference output voltage; a first voltage converter, configured to operably level-shift the main control voltage with a first voltage shifting level to generate a first control voltage; a first output stage circuit, configured to operably generate a first output voltage according to the first control voltage; and a second output stage circuit, configured to operably generate a second output voltage according to the main control voltage.
Claims10
A multi-output linear regulator, comprising:
- a main output stage circuit, configured to operably generate and regulate a reference output voltage according to a main control voltage;
- an error amplifier, configured to operably amplify a difference between a reference voltage and a feedback signal to generate the main control voltage, wherein the feedback signal is related to the reference output voltage, wherein the error amplifier and the main output stage circuit jointly form a main regulation loop configured to regulate the reference output voltage according to the reference voltage;
- a first voltage converter, configured to operably level-shift the main control voltage with a first voltage shifting level to generate a first control voltage;
- a first output stage circuit, configured to operably generate a first output voltage according to the first control voltage;
- and
- a second output stage circuit, configured to operably generate a second output voltage according to the main control voltage;
- wherein each of the main output stage circuit, the first output stage circuit and the second output stage circuit is configured to form a fast regulation loop that regulates a corresponding regulated output voltage to track a corresponding stage control voltage;
- wherein the corresponding stage control voltage of the main output stage circuit corresponds to the main control voltage;
- wherein the corresponding stage control voltage of the first output stage circuit corresponds to the first control voltage;
- wherein the corresponding stage control voltage of the second output stage circuit is related to the main control voltage;
- wherein the corresponding regulated output voltage of the main output stage circuit corresponds to the reference output voltage;
- wherein the corresponding regulated output voltage of the first output stage circuit corresponds to the first output voltage;
- wherein the corresponding regulated output voltage of the second output stage circuit corresponds to the second output voltage.
Dependencies are inferred from the claim text.