Stmicroelectronics S.r.l.

Stmicroelectronics International N.v.

Invensense, Inc.

Politecnico Di Torino

Universita' Pavia

Edoardo Bonizzoni

Piero Malcovati

Edoardo Botti

Alessandro Nicolosi

Franco Maloberti

Davide Luigi Brambilla

Paolo Pulici

Enrico Mammei

Dario Livornesi

Michele Folz

Francesco Stilgenbauer

Paolo Cacciagrano

Alessio Emanuele Vergani

Francesco Piscitelli

Mojtaba Mohammadi Abdevand

Paolo Stefano Crovetti

Matteo De Ferrari

Raffaele Boi

Antonio Aprile

Daniele Gardino

Alessandra Farina

Arunkumar Salimath

A delta-sigma modulator includes a loop filter circuit having a first input that receives an input signal and a second input that receives a feedback signal. The loop filter circuit generates a filtered signal. A quantizer circuit quantizes the integrated signal to generate an output signal. An anti-windup circuit detects instances where the integrated signal is outside an input signal input of the quantizer circuit and in response thereto generates a dead zone signal having a magnitude and sign corresponding to a difference between the filtered signal and the input signal range. The feedback signal is a sum of the output signal and the dead zone signal.

Delta-sigma modulator with anti-windup circuit

The described technology is generally directed towards an electrical current based temperature sensor and temperature information digitizer, referred to herein as a 'temperature digitizer'. The temperature digitizer can include a sensor core, a digital to analog converter, a current comparator, and a processor. The processor can be configured to perform multiple current comparisons using the sensor core, digital to analog converter, and current comparator, and the processor can generate a digital code that reflects the results of the multiple current comparisons. The digital code represents the temperature.

Electrical current based temperature sensor and temperature information digitizer

A control module, for a resonant switched-capacitor converter with an inductor, includes a controller stage, an input stage generating a control signal indicating a control quantity, a delay stage generating a duration signal indicating a time quantity, and a circuit indicating zero crossings of the inductor current. If the control quantity is variable, the input stage clamps the control quantity to a control threshold. When in normal mode, the controller stage controls the converter to carry out a phase sequence with timings that depend on the zero crossings and the time quantity, so the converter generates an output current that depends on the time quantity and is prevented from dropping below a minimum current. If the output voltage reaches an upper threshold, the controller stage switches into pulse-skipping mode to suspend the phase sequence, and resumes the phase sequence after the output voltage drops to a lower threshold.

Resonant switched capacitor converter control module and method with zero current switching control

A control module, for a resonant switched-capacitor converter having first, second, third and fourth cascaded switches and generating an output voltage, includes a timing circuit generating a clock, a controller generating first and second control signals indicating, respectively, first and second control quantities, the difference between which being a function of the difference between a reference quantity and a feedback quantity depending on the output voltage, first and second delay circuits that generate first and second logic signals and, respectively, third and fourth logic signals, the first and third logic signals being delayed with respect to the clock as a function of, respectively, the first and second control quantities, the second and fourth control signals being respectively the logic negation of the first and third logic signals, and a driver that controls the first, second, third, and fourth switches based on, respectively, the first, second, third, and fourth logic signals.

Control module for a resonant switched-capacitor converter and method for controlling a resonant switched-capacitor converter

According to an embodiment, a circuit includes a biasing and a low-frequency recovery circuit. The biasing circuit includes a voltage digital to analog converter (V-DAC), a differential difference amplifier coupled to the V-DAC, a common-mode feedback (CMFB) amplifier coupled to the differential difference amplifier, and a first pair of transistors arranged as a high-impedance structure and coupled to the differential difference amplifier and the CMFB amplifier. The low-frequency recovery circuit includes a current digital to analog converter (C-DAC), a second pair of transistors arranged as a high-impedance structure and coupled to the first pair of transistors, a pair of resistors having a resistance value equal to half a resistance of the resistive sensor, the pair of resistors arranged between the second pair of transistors and coupled to the C-DAC, and a gain circuit coupled to shared nodes between the second pair of transistors and the pair of resistors.

Circuit for biasing an external resistive sensor

A converter includes a first switch coupled between a first input terminal and a first terminal of an inductor, and a second switch coupled between a second terminal of the inductor and a second input terminal. A third switch is coupled between the second terminal of the inductor and a first output terminal, and a fourth switch is coupled between the first terminal of the inductor and a second output terminal. A capacitor is coupled between the first and second output terminals. A control circuit monitors a regulated voltage between the first and second output terminals. During a charge phase, the first and second switches are closed to charge the inductor. During a discharge phase, the third and fourth switches are closed to charge the capacitor and increase the regulated voltage.

Electronic converter, related audio system, integrated circuit and method of operating an electronic converter

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Pavia, Italy

Edoardo Bonizzoni