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Stmicroelectronics shenzhen R & d Co Ltd patents


Recent patent applications related to Stmicroelectronics shenzhen R & d Co Ltd. Stmicroelectronics shenzhen R & d Co Ltd is listed as an Agent/Assignee. Note: Stmicroelectronics shenzhen R & d Co Ltd may have other listings under different names/spellings. We're not affiliated with Stmicroelectronics shenzhen R & d Co Ltd, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "S" | Stmicroelectronics shenzhen R & d Co Ltd-related inventors


Embedded speaker protection for automotive audio power amplifier

A circuit can be used in a speaker system. The circuit includes an amplifier with an output configured to be coupled to a speaker. An offset comparator has an input coupled the output of the amplifier and is configured to provide an offset control signal. A digital circuit has a... Stmicroelectronics shenzhen R & d Co Ltd

Current limiting circuit

A current limiting circuit includes a current sensing module that is configured to sense an output current of a power transistor and to generate a corresponding sensing current which is proportional to the output current. A first current limiting module coupled to the current sensing module is configured to generate... Stmicroelectronics shenzhen R & d Co Ltd

Two-stage error amplifier with nested-compensation for ldo with sink and source ability

A low dropout amplifier may include an error amplifier having first and second inputs coupled to a reference signal and a feedback signal, respectively. The error amplifier may be configured to generate first and second error signals at first and second outputs, respectively, with the first and second error signals... Stmicroelectronics shenzhen R & d Co Ltd

Switching converter to operate in pulse width modulation mode or pulse skipping mode

An electronic device includes a current comparator to generate an output current based upon a difference between a current flowing in an output branch and a current flowing in an input branch. A pair of transistors is coupled to an output of the current comparator. A first amplifier has inputs... Stmicroelectronics shenzhen R & d Co Ltd

Power on reset (por) circuit

A Schmitt trigger circuit having an input coupled to a current summing junction. A trickle current source generates a trickle current applied to the current summing junction. A bandgap current source generates a bandgap current applied to the current summing junction (wherein the bandgap current is fixed when a supply... Stmicroelectronics shenzhen R & d Co Ltd

Proximity detector device with interconnect layers and related methods

A proximity detector device may include a first interconnect layer including a first dielectric layer, and first electrically conductive traces carried thereby, an IC layer above the first interconnect layer and having an image sensor IC, and a light source IC laterally spaced from the image sensor IC. The proximity... Stmicroelectronics shenzhen R & d Co Ltd

Bidirectional voltage differentiator circuit

A bidirectional voltage differentiator circuit comprises start-up circuitry, sensing circuitry, and output circuitry coupled to logic circuitry. The start-up circuitry acts to start-up the sensing circuitry when the circuit is powered on, and accelerates the response of the sensing circuitry thereafter. The sensing circuitry senses variation in an input voltage... Stmicroelectronics shenzhen R & d Co Ltd

Inverting buck-boost converter drive circuit and method

A driver circuit includes a high-side power transistor having a source-drain path coupled between a first node and a second node and a low-side power transistor having a source-drain path coupled between the second node and a third node. A high-side drive circuit, having an input configured to receive a... Stmicroelectronics shenzhen R & d Co Ltd

Current slope control power driver circuit application

A low side driver includes a first transistor coupled in series with a second transistor at a low side voltage node for a load. A capacitance is configured to store a voltage and a voltage buffer circuit has an input coupled to receive the voltage stored by the capacitance and... Stmicroelectronics shenzhen R & d Co Ltd

Driving a light emitting device and the same

A driving apparatus configured to drive a light emitting device includes a driving current source module operable to supply current to the light emitting device via a node during operation. A protection module coupled to the node and the driving current source module selectively injects current to the node during... Stmicroelectronics shenzhen R & d Co Ltd

Method and measuring average inductor current delivered to a load

Current flowing through an inductor in response to a pulse width modulation (PWM) control signal is sensed to generate a sensed current. The sensed current is processed over one or more PWM cycles of the PWM control signal to generate an output signal indicative of average inductor current. This processing... Stmicroelectronics shenzhen R & d Co Ltd

Negative charge pump with soft start

A charge pump circuit is coupled between a positive supply node and a ground node. The charge pump circuit operates in response to clock signals output from a clock generator to produce a negative voltage at a negative voltage output node. A soft-start circuit for the charge pump circuit includes... Stmicroelectronics shenzhen R & d Co Ltd

Power on reset (por) circuit

A Schmitt trigger circuit having an input coupled to a current summing junction. A trickle current source generates a trickle current applied to the current summing junction. A bandgap current source generates a bandgap current applied to the current summing junction (wherein the bandgap current is fixed when a supply... Stmicroelectronics shenzhen R & d Co Ltd

Methods and circuits to reduce pop noise in an audio device

A class D amplifier receives and amplifies a differential analog signal which is then differentially integrated. Two pulse width modulators generate pulse signals corresponding to the differentially integrated analog signal and two power units generate output pulse signals. The outputs the power units are coupled to input terminals of integrators... Stmicroelectronics shenzhen R & d Co Ltd

Embedded speaker protection for automotive audio power amplifier

A circuit can be used in a speaker system. The circuit includes an amplifier with an output configured to be coupled to a speaker. An offset comparator has an input coupled the output of the amplifier and is configured to provide an offset control signal. A digital circuit has a... Stmicroelectronics shenzhen R & d Co Ltd

Dynamic threshold generator for use in adaptive body biasing of a mos

An electronic device includes a transistor having a body and a body biasing circuit. The body biasing circuit includes a threshold estimator circuit to estimate a threshold voltage of the transistor and a comparison circuit to compare the threshold voltage of the transistor to a reference threshold voltage and to... Stmicroelectronics shenzhen R & d Co Ltd








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