Trimming procedure and code reuse for highly precise DC-DC converters

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12267084
APP PUB NO 20240154515A1
SERIAL NO

17980188

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Abstract

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A converter system includes a reference buffer buffering a reference input to produce a DAC reference, operating from a reference feedback voltage generated by a reference divider. A tail buffer generates a tail voltage from an input voltage generated from the DAC reference by a tail divider. An R-2R type DAC utilizes an R-2R ladder to generate a DAC output from a code. This ladder has a tail resistor coupled to the tail voltage. A feedback buffer buffers the DAC output to produce a converter reference. A DC-DC converter generates a DC output from a DC input, based upon a converter feedback voltage. A feedback divider coupled between the DC output and the converter reference generates the converter feedback voltage. Control circuitry selectively taps the reference divider to produce the reference feedback voltage (performing gain trimming) and selectively taps the tail divider to produce the input voltage (performing offset trimming).

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Patent Owner(s)

  • STMICROELECTRONICS S.R.L.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Attanasio, Marco Olbia-Tempio, IT 5 23
Ramorini, Stefano Milan, IT 45 211

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