Voltage Regulator and Voltage Regulation Method
First Claim
1. A voltage regulator, comprising:
- an output voltage regulation circuit, comprising an input to receive an input voltage and an output to deliver an output voltage of a constant level, anda drop-out voltage violation correction circuit, coupled to the output voltage regulation circuit, to detect an occurrence of a drop-out voltage violation and to cause the output regulation circuit to change the level of the output voltage upon detection of the drop-out voltage violation.
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Accused Products
Abstract
A voltage regulator has a device for regulating an output voltage, having an input to receive an input voltage and an output to deliver an output voltage of a constant level, and a device for correcting a drop-out voltage violation, coupled to the device for regulating, to determine an occurrence of a drop-out voltage violation and to cause the device for regulating to change the level of the output voltage upon detection of the drop-out voltage violation. A method for regulating an output voltage has the steps of receiving an input voltage, generating and outputting a regulated output voltage of a constant level, monitoring occurrence of a drop-out voltage violation, and causing a change of the level of the output voltage upon detection of the drop-out voltage violation.
27 Citations
29 Claims
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1. A voltage regulator, comprising:
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an output voltage regulation circuit, comprising an input to receive an input voltage and an output to deliver an output voltage of a constant level, and a drop-out voltage violation correction circuit, coupled to the output voltage regulation circuit, to detect an occurrence of a drop-out voltage violation and to cause the output regulation circuit to change the level of the output voltage upon detection of the drop-out voltage violation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A voltage regulator, comprising:
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means for regulating an output voltage, comprising an input to receive an input voltage and an output to deliver an output voltage of a constant level, and means for correcting a drop-out voltage violation, coupled to the means for regulating, to determine an occurrence of a drop-out voltage violation and to cause the means for regulating to change the level of the output voltage upon detection of the drop-out voltage. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A voltage regulator, comprising:
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an input port to supply an input voltage to the voltage regulator, an output port to deliver an output voltage, an output stage, coupled between the input port and the output port, a potential divider, coupled to a first node between the output stage and the output port, to tap-off a feedback voltage to be used for regulation of the output voltage, and a control unit, coupled to the potential divider, to control the potential divider upon receipt of a signal indicating the drop-out voltage violation, to change the level of the feedback voltage and the level of the output voltage. - View Dependent Claims (14, 15, 16)
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17. A method for regulating a voltage, comprising:
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receiving an input voltage, generating and outputting a regulated output voltage of a constant level, monitoring the occurrence of a drop-out voltage violation, and causing a change of the level of the output voltage upon detection of the drop-out voltage violation. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method for regulating an output voltage, comprising:
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receiving an input voltage, generating and outputting a regulated output voltage of a constant level, generating a feedback voltage from the output voltage, using the feedback voltage for regulating the output voltage, and changing the level of the feedback voltage and the level of the output voltage upon receiving a signal indicating a drop-out voltage violation. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification