Patents Assigned to Integrated Device Technology
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Patent number: 11171501Abstract: Embodiments described herein provides a battery charging circuit that boosts an input current and feeds the boosted input current to a battery for fast charging. Specifically, the battery charging circuit includes a low dropout regulator (LDO) for providing a voltage, a switch mode charger, coupled between the LDO and a battery, and a capacitor divider, coupled between the LDO and the battery, in parallel to the switch mode charger, for dividing the voltage outputted from the LDO by a factor.Type: GrantFiled: March 28, 2019Date of Patent: November 9, 2021Assignee: Integrated Device Technology, Inc.Inventors: Siqiang Fan, Sercan Ipek, Eric Huang, Turev Acar
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Patent number: 11171418Abstract: An apparatus includes a phased array antenna panel and one or more dual-polarization beam former circuits mounted on the phased array antenna panel. The phased array antenna panel generally comprises a plurality of dual-polarization antenna elements. The plurality of dual-polarization antenna elements are generally arranged in one or more groups. Each dual-polarization beam former circuit may be coupled to a respective group of the dual-polarization antenna elements. Each dual-polarization beam former circuit generally comprises a plurality of transceiver channels. Each transceiver channel generally comprises a horizontal channel and a vertical channel. Each dual-polarization beam former circuit provides polarization rotation through bias current control in each of the vertical and horizontal channels.Type: GrantFiled: February 5, 2019Date of Patent: November 9, 2021Assignee: Integrated Device Technology, Inc.Inventors: Samet Zihir, Tumay Kanar
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Patent number: 11128327Abstract: An apparatus includes a transceiver circuit, a series capacitor, and a shunt switch. The transceiver circuit may comprise a transmit chain including an output matching network and a receive chain including an input matching network. An output of the output matching network may be connected directly to an input/output of the transceiver circuit. The series capacitor may be connected between an input of the input matching network and the output of the output matching network. The shunt switch may be connected between the input of the input matching network and a circuit ground potential of the transceiver circuit.Type: GrantFiled: August 31, 2019Date of Patent: September 21, 2021Assignee: Integrated Device Technology, Inc.Inventors: Morteza Abbasi, Tumay Kanar, Naveen Krishna Yanduru
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Patent number: 11126218Abstract: A system that switches between a clock signal from a first line card and a clock signal from a second line card based on information transmitted from the first line card and the second line card on timing signals is presented. Some methods include receiving a first pulse-width modulated clock signal from a first line card, the first pulse-width modulated clock signal including information regarding the status of the first line card; receiving a second pulse-width modulated clock signal from a second line card, the second pulse-width modulated clock signal including information regarding the status of the second line card; producing a clock signal from the first pulse-width modulated clock signal; and switching to producing the clock signal from the second pulse-width modulated clock signal based on the information in the first pulse-width modulated clock signal.Type: GrantFiled: July 24, 2019Date of Patent: September 21, 2021Assignee: Integrated Device Technology, Inc.Inventors: Zaher Baidas, Ernst JG den Broeder, Leonid Goldin
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Patent number: 11112274Abstract: 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, each of the plurality of sensor boards including sensor coils, wherein one of the plurality of stacked sensor boards includes an active transmit coil; and a target positioned over the plurality of stacked sensor boards.Type: GrantFiled: July 31, 2019Date of Patent: September 7, 2021Assignee: Integrated Device Technology, Inc.Inventor: Gentjan Qama
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Patent number: 11108372Abstract: An apparatus comprises a first circuit and a second circuit. The first circuit generally comprises differential symmetric band extension circuitry. The second circuit generally comprises coupled inductor coils configured to convert between differential and single-ended signal formats.Type: GrantFiled: November 4, 2019Date of Patent: August 31, 2021Assignee: Integrated Device Technology, Inc.Inventors: Chuying Mao, Ran Li
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Patent number: 11099036Abstract: An accurate position sensor is presented. The sensor operates over 360-degree motion angular motion and includes a coil structure formed on a substrate and a target mounted to be angularly moved over the coil structure, the target being formed of a conducting material in a shape of a spiral of Archimedes. The coil structure includes coils with an arc sufficient to operate over a 360 degree motion of the target, for example between 120 degrees and 360 degrees. Some embodiments include coils with a 180 degree arc. A method of operating the position sensor includes rotating a target formed of a conducting material in a shape of a spiral of Archimedes over a coil structure and providing a linearized and calibrated response indicating the angular position of the target relative to the coil structure.Type: GrantFiled: July 10, 2019Date of Patent: August 24, 2021Assignee: Integrated Device Technology, Inc.Inventors: Gentjan Qama, Marco Nicolò, L'ubomir Fenic
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Patent number: 11079723Abstract: A time-to-digital converter obtains a Start signal to indicate the start of an event, and a Stop signal whose assertion indicates the stop of the event. The Stop signal can be asserted multiple times due to false indications of the event stop. The TDC continuously monitors the Stop signal to generate a separate digital value for the duration from the event's starting time to each assertion of the Stop signal. The digital values can be analyzed to select the true duration of the event. Other features and embodiments are also provided.Type: GrantFiled: February 6, 2018Date of Patent: August 3, 2021Assignee: Integrated Device Technology, Inc.Inventors: Min Chu, Jagdeep Singh Bal
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Patent number: 11075548Abstract: Embodiments described herein provide a method for wireless power transmission of reconfigurable power levels. A wireless power receiver is used to receive power from a wireless power transmitter according to a negotiated power level. The wireless power receiver determines whether a re-negotiation condition is met at the wireless power receiver. The wireless power receiver then sends, to the wireless power transmitter, a re-negotiation request for an updated power level different from the negotiated power level. The wireless power receiver receives, from the wireless power transmitter, an acknowledgement that acknowledges the updated power level, and then operates to receive power from the wireless power transmitter according to the updated power level.Type: GrantFiled: March 26, 2019Date of Patent: July 27, 2021Assignee: Integrated Device Technology, Inc.Inventor: Detelin Borislavov Martchovsky
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Patent number: 11050305Abstract: Embodiments herein provide a device for calibrating a voltage driven by a PWM signal for a circuit board. The device includes a controller configured to generate the PWM signal according to a PWM duty cycle value, and a voltage regulator configured to generate an output voltage according to the PWM signal. The controller is further configured to calibrate a relationship between the PWM duty cycle value and the output voltage based on a plurality of configured PWM duty cycle values and a plurality of corresponding voltages measured from the voltage regulator, and drive the circuit board by configuring the PWM duty cycle value based on the calibrated relationship.Type: GrantFiled: April 8, 2019Date of Patent: June 29, 2021Assignee: Integrated Device Technology, Inc.Inventors: Nicholaus Smith, Chan Young Jeong
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Patent number: 11043753Abstract: An apparatus includes a phased array antenna panel and one or more beam former circuits mounted on the phased array antenna panel. The phased array antenna panel generally comprises a plurality of antenna elements. The plurality of antenna elements are generally arranged in one or more groups. Each beam former circuit may be coupled to a respective group of the antenna elements. Each beam former circuit generally comprises a plurality of transceiver channels. Each transceiver channel generally comprises a power amplifier circuit configured, when operating in a transmit mode, to drive a respective one of the antenna elements. The power amplifier circuit generally comprises separate bias and voltage supply inputs providing additional power control.Type: GrantFiled: September 17, 2018Date of Patent: June 22, 2021Assignee: Integrated Device Technology, Inc.Inventors: Samet Zihir, Tumay Kanar
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Patent number: 11035902Abstract: In accordance with aspects of the present invention, a method of providing a fuel gauge is provided. The method includes measuring a battery current through and a battery voltage across a battery; determining an equivalent resistance from the current and the voltage using a multiplier K; determining an open circuit voltage based, in part, on the equivalent resistance; determining a state-of-charge based on the open circuit voltage; and adjusting the multiplier K based on the current and the state-of-charge.Type: GrantFiled: October 10, 2018Date of Patent: June 15, 2021Assignee: Integrated Device Technology, Inc.Inventor: Eric Huang
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Patent number: 11005298Abstract: In a wireless power transfer operation, the operating parameters are adjusted to improve efficiency by reducing the transmit and receive coil currents as follows. First, the transmitter causes the receiver to reduce the receive coil current to the lowest value based on the transmitter/receiver communication while still delivering the same amount of power to the load as before the AC current was adjusted to the minimum value. Then the transmitter may change the operating parameters to increase or preserve the power provided to the receiver without decreasing efficiency or with only small decrease in efficiency, or with increasing the efficiency. For example, the transmitter may increase the VBRG voltage (the DC voltage powering the transmit coil) or the operating frequency to maintain or increase output power levels at lower or the same AC and DC current levels. Other features are also provided.Type: GrantFiled: April 18, 2019Date of Patent: May 11, 2021Assignee: Integrated Device Technology, Inc.Inventors: Nicholaus Smith, Rui Liu, Amit D. Bavisi, Jiangjian Huang, Gabriel Aungurencei
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Patent number: 11005306Abstract: Embodiments described herein provide a wireless power transmitter that dynamically adjusts the deadtime to reduce power loss. Specifically, the wireless power transmitter includes a transistor circuit for switching a first voltage at a first node and a second voltage at a second node, and a LC circuit coupled between the first node and the second node. The wireless power transmitter further includes a controller coupled to the transistor circuit. The controller is configured to determine whether either of the first voltage and the second voltage is negative during a deadtime of switching. The controller is configured to increment or decrement the deadtime by an adjustment amount depending on whether negative voltage is detected.Type: GrantFiled: March 28, 2019Date of Patent: May 11, 2021Assignee: Integrated Device Technology, Inc.Inventors: Tao Qi, Gustavo Mehas, Chan Young Jeong, Xinyun Gu, Nicholaus Smith, Amit D. Bavisi, Daryl Sugasawara, Aihua Lee
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Patent number: 10998931Abstract: An apparatus includes a transmit-receive switch circuit and a detector circuit. The transmit-receive switch circuit may be connected between an input port, an output port, and a common port, and configured to switch a transmit radio-frequency signal from the input port to the common port in a transmit mode and a receive radio-frequency signal from the common port to the output port in a receive mode. The detector circuit may be integrated within the transmit-receive switch and may be configured to generate a power detection signal in response to at least one of the transmit radio-frequency signal or the receive radio-frequency signal.Type: GrantFiled: January 8, 2020Date of Patent: May 4, 2021Assignee: Integrated Device Technology, Inc.Inventors: Samet Zihir, Tumay Kanar, Himanshu Khatri
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Patent number: 10972058Abstract: In accordance with aspects of the present invention, embodiments of a photodiode circuit. A photodiode circuit according to some embodiments includes a transimpedance amplifier; a resistor coupled across the transimpedance amplifier; and an amplifier stage coupled to receive an output from the transimpedance amplifier, wherein the photodiode circuit provides dynamic range across a current range of the photodiode circuit. In some embodiments, the transimpedance amplifier includes a receive signal strength indicator that provides a DC current signal to a tail of a first amplifier stage, the tail providing a current that is adaptively related to the DC current. In some embodiments, the resistor is a shielded resistor. In some embodiments, the adaptive current sink includes a plurality of switchable parallel current sinks.Type: GrantFiled: April 26, 2019Date of Patent: April 6, 2021Assignee: Integrated Device Technology, Inc.Inventors: Ulrich Duemler, Bortecene Terlemez
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Patent number: 10963764Abstract: According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first output and the coil. In some embodiments an over-voltage protection circuit is coupled to protect the driver circuit.Type: GrantFiled: July 12, 2019Date of Patent: March 30, 2021Assignee: Integrated Device Technology, Inc.Inventors: Rui Liu, Tao Qi, Lijie Zhao, Gustavo James Mehas, Tae Kwang Park, Zhitong Guo, Siqiang Fan
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Patent number: 10956349Abstract: An apparatus includes a control circuit comprising (i) a first differential data strobe input/output circuit having a first set of driver and termination control inputs and (ii) a second differential data strobe input/output circuit having a second set of driver and termination control inputs. The first and the second sets of driver and termination control inputs are independently programmable. The first and the second differential data strobe input/output circuits operate in a first mode when the first differential data strobe input/output circuit is connected to a first memory device having a first data width and the second differential data strobe input/output circuit is connected to a second memory device having the first data width.Type: GrantFiled: December 16, 2019Date of Patent: March 23, 2021Assignee: Integrated Device Technology, Inc.Inventors: Alejandro F. Gonzalez, Craig DeSimone, Garret Davey, Yue Yu, Roland Knaack, Scott Herrington
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Patent number: 10958154Abstract: In accordance with aspects of the present invention, a wireless power circuit is presented. In some embodiments, the wireless power circuit includes one or more high-side transistors; one or more low-side transistors coupled in series with the one or more high-side transistors, wherein the one or more low-side transistors can be controlled as current sources.Type: GrantFiled: July 2, 2018Date of Patent: March 23, 2021Assignee: Integrated Device Technology, Inc.Inventors: Rui Liu, Gustavo J. Mehas, Lijie Zhao
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Patent number: 10938355Abstract: An apparatus includes an amplifier circuit and a protection circuit. The amplifier circuit may be configured to generate an output signal by amplifying an input signal received at an input port. The input signal may be a radio-frequency signal. The protection circuit may be configured to (i) generate a detection signal by detecting when a level of the input signal exceeds a corresponding threshold, where the level is a power level, a voltage level or both, (ii) route the input signal away from the input port of the amplifier circuit and disable the amplifier circuit both in response to the detection signal being continuously active at least a first time duration and (iii) route the input signal to the input port of the amplifier circuit and enable the amplifier circuit both in response to the detection signal being continuously inactive at least a second time duration.Type: GrantFiled: December 20, 2018Date of Patent: March 2, 2021Assignee: Integrated Device Technology, Inc.Inventors: Victor Korol, Roberto Aparicio Joo