Texas Instruments Corporation

Ashish Khandelwal

Nikhil Gupta

Timothy W Fischer

Sreenivasan Kalyani Koduri

Robert Allan Neidorff

Yipeng Su

Joseph Maurice Khayat

Bharath Balaji Kannan

Angelo William Pereira

Sujan Kundapur Manohar

Srinath Hosur

Charles M Branch

Joel Nathan Brassfield

A technique for designing circuits including receiving a data object representing a circuit for a first process technology, the circuit including a first sub-circuit, the first sub-circuit including a first electrical component and a second electrical component arranged in a first topology; identifying the first sub-circuit in the data object by comparing the first topology to a stored topology, the stored topology associated with the first process technology; identifying a first set of physical parameter values associated with first electrical component and the second electrical component of the first sub-circuit; determining a set of performance parameter values for the first sub-circuit based on a first machine learning model of the first sub-circuit and the identified set of physical parameters; converting the identified first sub-circuit to a second sub-circuit for the second process technology based on the determined set of performance parameter values; and outputting the second sub-circuit.

Automated geometry optimization for analog, mixed-signal circuit design

Multi-algorithmic approach to represent highly non-linear high dimensional space

Automated analog and mixed-signal circuit design and validation

Programmatic circuit partitioning and topology identification

Process aware compact representation of integrated circuits

A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for supplying power to the wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling comprises a primary side tank circuit receiving a signal on from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed.

Circuit and architecture for a demodulator for a wireless power transfer system and method therefor

A voltage regulator (such as a low drop-out regulator) includes a pass transistor coupled to an input voltage node and an output voltage node. The voltage regulator also includes a drive transistor coupled to a control input of the pass transistor and a first resistor coupled between a source and a back gate of the drive transistor. The voltage regulator also includes a complementary to absolute temperature (CTAT) current generator circuit coupled to the resistor and configured to generate a CTAT current to bias the first resistor.

Adaptive body bias for voltage regulator

A circuit includes a receiver that includes an input stage to receive a touch signal from a touch system. A noise reduction circuit that samples the touch signal to detect a noise signal in the touch signal. The noise reduction circuit generates a reduction signal based on the noise signal that is fed back to the input stage of the receiver to mitigate noise interference of the noise signal with respect to the touch signal at the receiver.

Interference reduction circuit for touch system

A voltage regulator (e.g., a low drop-out regulator) includes a pass transistor coupled to an input voltage node and an output voltage node. The voltage regulator also includes a drive transistor coupled to a control input of the pass transistor and a first resistor coupled between a source and a back gate of the drive transistor. The voltage regulator also includes a complementary to absolute temperature (CTAT) current generator circuit coupled to the resistor and configured to generate a CTAT current to bias the first resistor.

A transmitter circuit in a wireless power transmission system has a tank circuit, having an inductor and a capacitor, the inductor being couplable to the inductor of a receiver circuit. An oscillator generates an oscillation frequency signal for driving the tank circuit. A first digital-to-analog converter (DAC) provides a first control signal to control the oscillating frequency of the oscillator. A frequency shift keying (FSK) circuit changes a digital signal input to the digital-to-analog converter for shifting the oscillation frequency utilized to drive the tank circuit, the FSK signal transmitting data or commands to the receiver circuit. A method of transmitting FSK signals in a wireless power transmission system is also disclosed.

Control of a tank circuit in a wireless power transmission system providing FSK communication

A primary side wireless power transmitter inductively couplable to a secondary side wireless power receiver for receiving communications from the secondary side wireless power receiver through the inductive coupling having a primary side tank circuit receiving a signal from the secondary side wireless power receiver. A phase delay or time delay circuit generates a fixed delay clock signal from a signal utilized to excite the primary side tank circuit. A sample and hold circuit samples a tank circuit voltage utilizing the fixed phase or time delayed clock signal. A comparator is coupled to an output of the sample and hold circuit for extracting data or commands from the signal stream. A method of operating a primary side wireless transmitter inductively coupled to a secondary side wireless power receiver for supplying power to the wireless power receiver to power a load coupled to the receiver is also disclosed.

A light-emitting diode (LED) driver system includes a control circuit that provides a waveform for driving a power transistor to generate a regulated current through one or more LEDs, and an error amplifier that generates an output compensation signal based on a comparison of a desired regulated current and an actual regulated current through the one or more LEDs. The output compensation signal is used to set an output compensation voltage that sets the duty cycle of the waveform. The LED driver system further comprises a dimming control device configured during a dimming control mode to alternate between dimming-on time periods and dimming-off time periods, and a sample and hold switch having a first state for holding the output compensation voltage fixed during each dimming-off time period, and a second state for restoring the error amplifier to its previous dimming-on operating state upon returning to each subsequent dimming-on time period.

Growing community of inventors

Irving, TX, United States of America

Ashish Khandelwal