SINGLE FEEDBACK LOOP FOR PARALLEL ARCHITECTURE BUCK CONVERTER - LDO REGULATOR
First Claim
1. A voltage regulation circuit comprising:
- a direct current to direct current (DC-DC) converter configured to control a first current provided from a source to a load via a first output;
a linear regulator configured to control a second current provided from the source to the load via a second output;
a single control loop configured to receive an output voltage across the load and a first reference voltage, the single control loop being further configured to generate a single error signal between the output voltage across the load and the first reference voltage and to control the DC-DC converter and the linear regulator using the single error signal such that when the single error signal is outside of a predetermined range the DC-DC converter provides the first current to the load and the linear regulator provides the second current to the load simultaneously.
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Accused Products
Abstract
An embodiment of a voltage regulation circuit includes a DC-DC converter configured to control a first current provided from a source to a load via a first output, and a linear regulator configured to control a second current provided from the source to the load via a second output. The voltage regulation circuit further includes a single control loop configured to receive an output voltage across the load and a first reference voltage. The single control loop is further configured to generate a single error signal between the output voltage across the load and the first reference voltage and to control the DC-DC converter and the linear regulator using the single error signal such that when the single error signal is outside of a predetermined range the DC-DC converter provides the first current to the load and the linear regulator provides the second current to the load simultaneously.
83 Citations
20 Claims
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1. A voltage regulation circuit comprising:
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a direct current to direct current (DC-DC) converter configured to control a first current provided from a source to a load via a first output; a linear regulator configured to control a second current provided from the source to the load via a second output; a single control loop configured to receive an output voltage across the load and a first reference voltage, the single control loop being further configured to generate a single error signal between the output voltage across the load and the first reference voltage and to control the DC-DC converter and the linear regulator using the single error signal such that when the single error signal is outside of a predetermined range the DC-DC converter provides the first current to the load and the linear regulator provides the second current to the load simultaneously. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 16, 17, 18)
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11. A method of regulating voltage delivered to a load comprising:
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controlling, by a direct current to direct current (DC-DC) converter, a first current provided from a source to a load via a first output; controlling, by a linear regulator, a second current provided from the source to the load via a second output; receiving, by a single control loop, an output voltage across the load and a first reference voltage; generating, by the single control loop, a single error signal between the output voltage across the load and the first reference voltage; and controlling the DC-DC converter and the linear regulator using the single error signal such that when the single error signal is outside of a predetermined range the DC-DC converter provides the first current to the load and the linear regulator provides the second current to the load simultaneously. - View Dependent Claims (12, 13, 14, 19, 20)
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Specification