Stmicroelectronics (Rousset) Sas

Stmicroelectronics (Grenoble 2) Sas

Didier Davino

Sebastien Ortet

Cedric Thomas

Michel Cuenca

Remi Collette

One embodiment provides a digital-to-analog converter that includes an output amplifier configured to be powered with a controllable power supply voltage and a ground reference voltage. The output amplifier is configured to generate an analog output signal having a dynamic range centered on a common-mode voltage. The output amplifier includes a common-mode adaptation circuit configured to position a level of the common-mode voltage at a level located in a middle portion of an interval of voltages located between the power supply voltage and the ground reference voltage, according to an effective level of the power supply voltage.

Digital-to-analog converter and corresponding digital-to-analog conversion method

In an embodiment, a voltage converter is configured to operate by a succession of operating cycles, each cycle comprising an energy accumulation phase and an energy restitution phase, wherein the converter is further configured to determine a duration of one of the phases by comparing a voltage ramp and a first reference voltage, and wherein a slope of the voltage ramp depends on a sign of a current in an inductor at an end of a previous operating cycle.

Voltage converter having adjustable phases

An embodiment electronic device includes a first circuit including first and second transistors series-coupled between a node of application of a power supply voltage and a node of application of a reference voltage, the first and second transistors being coupled to each other by a first node, and a second circuit, configured to compare a first voltage on the first node with first and second voltage thresholds.

Voltage comparator and method

An electronic device includes a switched-mode power supply having a first operating phase during which the output node of the switched-mode power supply is coupled by an on switch to a source of a first reference voltage. The first operating phase is followed by a second operation phase during which the output node of the switched-mode power supply is in a high impedance state. While in the second operating phase, a capacitor connected to the output node of the switched-mode power supply at least partially discharges into a load.

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Pourrieres, France

Didier Davino