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US Patent 11652415 Current sensing techniques for power converter circuits

Patent 11652415 was granted and assigned to Analog Devices on May, 2023 by the United States Patent and Trademark Office.

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Is a
Patent
Patent
1

Patent attributes

Patent Applicant
Analog Devices
Analog Devices
1
Current Assignee
Analog Devices
Analog Devices
1
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
116524151
Patent Inventor Names
Jindong Zhang1
Yingyi Yan1
Ya Liu1
Owen Jong1
Date of Patent
May 16, 2023
1
Patent Application Number
173250001
Date Filed
May 19, 2021
1
Patent Citations
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US Patent 10084381 DCR inductor current-sensing in four-switch buck-boost converters
1
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US Patent 10483847 Power converter calibration method and apparatus
1
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US Patent 10483860 Primary side constant current regulation
1
Patent Citations Received
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US Patent 11979081 Current sensing techniques for power converter circuits
2
Patent Primary Examiner
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Matthew V. Nguyen
1
CPC Code
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H02M 3/156
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H02M 3/158
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H02M 1/14
1
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H02M 1/0009
1
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H02M 1/0003
1
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H02M 1/15
1
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H02M 3/1582
1

A current sensing technique for coupled inductors in switching regulator circuits, where the current sensing technique can provide the current information needed for a power converter design and can be implemented as a real-world solution. The current sensing techniques can provide complete information of the coupled inductor current, such as peak current, valley current, and intermediate ripples. The current sensing techniques can use a simple RC network, such as two resistors and two capacitors for 2-phase operation. The techniques, however, are not limited to two-phase operation. The current sensing techniques of this disclosure can be extended to power stage assembly implementations, e.g., DrMOS modules, with current output in order to increase signal-to-noise ratio, which is significant for reliable control. In addition, the current sensing techniques of this disclosure can be extended to multi-phase operation, such as three or more phases.

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