Integrated Device Tech Patent Grants

Wireless power Tx to Tx conflict and protection

Granted: February 20, 2024
Patent Number: 11909220
A wireless power device is presented that avoids transmit conflicts. The device can include a rectifier circuit coupled to a coil; a transmit driver coupled to the rectifier circuit; a transmit detect circuit configured to detect receipt of transmitted wireless power at the coil; and a controller coupled to the transmit driver and the transmit detect circuit, the controller receiving a signal from the transmit detect circuit and providing an alert of the presence of the transmitted…

Wireless power receiver configurable for LDO or buck operation

Granted: October 17, 2023
Patent Number: 11791662
A wireless power receiver according to some embodiments includes an integrated circuit which includes: a full-bridge rectifier coupled to receive wireless power from a receiver coil; a wireless receiver controller coupled to control the full-bridge rectifier; a pass device coupled between the full-bridge rectifier and an output; and a configurable controller coupled to the switch, the configurable controller configurable as a LDO controller or a Buck controller. A second controller can…

Light detection and ranging system and method for operating a light detection and ranging system

Granted: October 10, 2023
Patent Number: 11782143
A light detection and ranging system is presented that includes at least one light source for emitting a light pulse to the surroundings of the light detection and ranging system, at least one monitoring optical sensor for monitoring the emitting of the light pulse by the at least one light source, at least one receiving optical sensor for receiving a light signal from the surroundings of the light detection and ranging system, and at least one signal processing unit for processing the…

Inductive position sensor for electronic throttle control

Granted: June 20, 2023
Patent Number: 11680826
A control that can be a throttle control of a handle-bared vehicle is presented. According to some embodiments, a control can include a plurality of circuit boards, each of the circuit boards including a transmission coil, sensor coils, and control circuitry the drives the transmission coil and receives signals from the sensor coils; and one or more targets mounted on a shaft and configured to rotate over the sensor coils of the plurality of circuit boards as the shaft is rotated,…

Fully redundant position sensor

Granted: June 6, 2023
Patent Number: 11668589
A position sensor according to some embodiments includes a first position sensor board having first sensor coils and a first transmit coil; a second position sensor board having second sensor coils stacked with, and separated from by a distance Z, the first position sensor; and at least one target positioned relative to the stacked first position sensor and second position sensor. A redundant position sensor according to some embodiments includes a plurality of stacked sensor boards,…

Calibration and linearization of position sensor

Granted: March 21, 2023
Patent Number: 11609082
In some embodiments, a position sensor calibration and linearization system for position sensors is provided. A method of calibrating and linearization of a position sensor includes reading Spatial Angle data from a position sensor at a set of positions of a target swept over receive coils in the position sensor; calculating calibration parameters from the Spatial Angle data; determining an initial position values from the Spatial Angle data and the calibration parameters; determining…

Solid-state optical receiver driver system and method for testing a solid-state optical receiver driver system

Granted: February 7, 2023
Patent Number: 11573306
Embodiments of the invention relates to a Solid-state optical receiver driver system, particularly for automotive applications, comprising at least one optical receiver channel, the optical receiver channel being connectable to a respective optical receiver, which is characterized in that the solid-state optical receiver driver system further comprises at least one test signal generation unit, for providing a test signal to the at least one optical receiver channel. The invention further…

Light detection and ranging system and method for operating and testing a light detection and ranging system, particularly for safety relevant applications

Granted: January 17, 2023
Patent Number: 11555905
A light detection and ranging system is disclosed. The system includes a first light source for sending a light signal and a photo detector for receiving a light signal from the surroundings of the system. A signal processing unit receives and processes the light signal to detect objects in the surroundings of the system. A control unit controls, particularly synchronizing, the first light source, the photo detector and/or the signal processing unit. The system further includes a test…

Enhanced foreign object detection with coil current sensing in wireless power transfer systems

Granted: December 13, 2022
Patent Number: 11527920
Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.

Wireless power receiver configurable for LDO or buck operation

Granted: October 25, 2022
Patent Number: 11482889
A wireless power receiver according to some embodiments includes an integrated circuit which includes: a full-bridge rectifier coupled to receive wireless power from a receiver coil; a wireless receiver controller coupled to control the full-bridge rectifier; a pass device coupled between the full-bridge rectifier and an output; and a configurable controller coupled to the switch, the configurable controller configurable as a LDO controller or a Buck controller. A second controller can…

Recovery of modulation amplitude in wireless charger tx demodulation

Granted: April 19, 2022
Patent Number: 11309738
In accordance with aspects of the present invention, a method and apparatus for demodulating an amplitude-modulated wireless power signal is presented. A method of receiving an amplitude modulated component of a wireless power transmission signal according to some embodiments includes receiving an input signal, wherein the input signal is based on an amplitude modulated wireless power signal; and applying an offset to the input signal to receive the amplitude modulated component. A…

Half-half-bridge pulse width modulation low power magnetic secure transmission systems

Granted: April 12, 2022
Patent Number: 11303154
According to some embodiments, a magnetic secured transmission (MST) driver is provided. The MST driver includes a full-bridge switching circuit that includes a first half-bridge coupled to a first node and a second half-bridge coupled to a second node; and a control circuit coupled to drive the first half-bridge according to MST input data and to drive the second half bridge according to a high-frequency pulse width modulation (PWM) signal.

Digital logic compatible inputs in compound semiconductor circuits

Granted: March 8, 2022
Patent Number: 11271566
An apparatus includes a device comprising a semiconductor junction configured to generate a reference voltage, a voltage divider circuit, a comparator circuit, and a first output circuit. The voltage divider circuit may be configured to generate a first predetermined threshold voltage in response to the reference voltage. The comparator circuit may be configured to generate a first intermediate signal in response to a comparison of the first predetermined threshold voltage and an input…

DDR5 client PMIC power up sequence and state transitions

Granted: February 15, 2022
Patent Number: 11249539
An apparatus includes a plurality of registers and a host interface comprising a plurality of pins. One of the plurality of registers may be a power state entry register configured to control entry to a low power state. One of the plurality of pins may be an enable pin. The apparatus may be configured to enter the low power state in response to setting the power state entry register to a first value and providing the enable pin a signal with a first level. The apparatus may be configured…

Control of ionic cooling in wireless charging systems

Granted: February 1, 2022
Patent Number: 11240942
In accordance with some embodiments of the present invention, an ion cooling engine (ICE) controlled by a transmitting or receiving device cools a transmit or receive coil and possibly other parts of a wireless power transmitter or receiver system. In some embodiments, the ICE includes a low-voltage circuit controlled by the transmitting device and coupled to a high voltage circuit that generates the airflow. Other features are also provided.

Calibrated mobile gas sensor

Granted: January 25, 2022
Patent Number: 11231402
A mobile gas monitor is presented. In accordance with some embodiments, a mobile gas monitor includes a gas sensor; a mobile device coupled to the gas sensor, the mobile device executing instructions to: read data from the gas sensor; provide calibration; and provide calibrated concentrations based on the data from the gas sensor.

Temperature sensor module with integrated lid structure for spurious IR-cancellation

Granted: January 18, 2022
Patent Number: 11226237
A temperature sensor module with an integrated lid structure for spurious IR-cancellation is disclosed. An improved temperature sensor module that allows detection of a maximum of the relevant IR-radiation from an object's surface of interest as well as generation of additional information about parasitic or spurious IR-radiation that distort the relevant thermal signal in order to enable a cancellation of interfering thermal signal portions is presented. The temperature sensor module…

Programmable amplifiers

Granted: January 4, 2022
Patent Number: 11218120
A programmable transimpedance amplifier (TIA) includes a plurality of signal paths between an output of a common emitter amplifier and the output of the TIA. The TIA is programmed by selecting one of the signal paths, because the paths have different parameters (e.g. different bandwidth). Thus, the bandwidth or other parameter can be programmed by selecting the appropriate path. The common emitter amplifier's output is coupled to the inputs of common base amplifiers in each path. The…

Directed magnetic field coil design

Granted: January 4, 2022
Patent Number: 11216601
In accordance with aspects of the present invention, a coil arrangement is presented. A coil arrangement according to some embodiments includes at least one coil positioned to provide a magnetic field in a first area and configured to reduce the magnetic field in a second area outside of the first area. In some embodiments, the at least one coil includes a bent solenoid oriented in the X-Y plane, the bent solenoid localizing magnetic field flux at ends of the bent solenoid. In some…

Systems and methods for operation efficiency in wireless power transfer

Granted: December 28, 2021
Patent Number: 11211829
Embodiments described herein a method for controlling operating frequency for a wireless power charging system. Specifically, a transmitter coil at a wireless power transmitter is driven under an operating frequency and an input voltage. Deadtime information at the wireless power receiver is received, from a wireless power receiver having a receiver coil that receives wireless power from the transmitter coil. A microcontroller then determines, based on the received deadtime information…