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公开(公告)号：US20230146600A1
公开(公告)日：2023-05-11
申请号：US17883948
申请日：2022-08-09
Applicant: Renesas Electronics America Inc.
Inventor： Chan Young Jeong , Tao Qi , Young Chul Ryu , Kwangmuk Choi , Pooja Agrawal , Krishal Jaswantsinh Solanki , Adnan Dzebic
Abstract: Systems, apparatuses, and methods for detecting a foreign object on a wireless power charging region are described. A circuit can detect an object inductively coupled to a wireless power transmitter. The circuit can further measure an input parameter prior to a power transfer stage, the input parameter can be one of an input current and an input power. The circuit can further compare the measured input parameter with a predetermined value. The circuit can further determine whether the object is a foreign object or the wireless power receiver based on a result of the comparison between the measured input parameter with the predetermined value.
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公开(公告)号：US20230118432A1
公开(公告)日：2023-04-20
申请号：US17502613
申请日：2021-10-15
Applicant: Renesas Electronics America Inc.
Inventor： Shahriar Jalal NIBIR , Yen-Mo CHEN , Sungkeun LIM
IPC: H02J7/00
Abstract: A method, apparatus and non-transitory computer-readable medium of regulating current within a battery charging circuit. The apparatus including a first current sense resistor configured to sense a first current value at a first port, a second current sensor resistor configured to sense a battery discharge current value output from a battery, and a processor configured to, in response to a short circuit or malfunction at the first current sense resistor, use the battery discharge current value to determine an output current limit and to limit the current at the first port according to the output current limit.
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公开(公告)号：US11616493B2
公开(公告)日：2023-03-28
申请号：US16909407
申请日：2020-06-23
Applicant: Renesas Electronics America Inc.
Inventor： Christopher Semanson , James Page , Onkar Raut
Abstract: Various exemplary embodiments are directed to methods including obtaining an input sample magnitude, filtering the obtained input sample magnitude, generating a sample-to-sample difference based on the filtered input sample magnitude, and engaging an actuator in accordance with a determination that the sample-to-sample difference satisfies a rate threshold. In addition, various exemplary embodiments are directed to devices including a processor, a control sensor operatively coupled to the processor and operable to obtain an input sample magnitude, an input filter operatively coupled to the processor and operable to filter the at least one obtained input magnitude sample, a non-transitory computer-readable medium operatively coupled to the processor and including a rate engine operable to generate a sample-to-sample difference based on the filtered input sample magnitude, and to generate a determination that the sample-to-sample difference satisfies a rate threshold, and a control actuator operatively coupled to the processor and operable to engage an operation mechanism in accordance with the determination that the sample-to-sample difference satisfies a rate threshold.
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34.发明授权公开(公告)号：US11581814B2
公开(公告)日：2023-02-14
申请号：US17346919
申请日：2021-06-14
Applicant: Renesas Electronics America Inc.
Inventor： Chun Cheung , Paul Dackow , Brandon Howell , Kunrong Wang , Matthew Harris
Abstract: Methods and apparatuses for controlling an apparatus comprising a controller integrated in a first slave device. In an example, the controller can detect a sensed current of the first slave device. The controller can receive a voltage signal associated with a second slave device connected to the first slave device. The controller can generate a correction current based on the sensed current of the first slave device and the voltage signal. The controller can modulate a pulse width modulation (PWM) signal received by the first slave device using the correction current. The controller can control a power converter using the modulated PWM signal.
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公开(公告)号：US20230027127A1
公开(公告)日：2023-01-26
申请号：US17383870
申请日：2021-07-23
Applicant: Renesas Electronics America Inc.
Inventor： Jiangjian Huang , Hulong Zeng
Abstract: Apparatuses including multiple selectable circuit elements are described. In an example, an apparatus may include a power supply configured to output a voltage. The apparatus may further include a controller connected to the power supply and a transmission unit connected to the controller. The transmission unit may be configured to output power. The transmission unit may include comprising an inverter connected to the power supply. The inverter may include a high-side switching element. The transmission unit may further include a circuit element a circuit connected to the power supply. The circuit may be configured to select the circuit element. The circuit may include a switch connected between the inverter and the circuit element. The switch and the high-side switching element may be configured to be driven by the voltage outputted by power supply. The controller may be configured to control the power being outputted by the transmission unit.
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Patent Agency Ranking
公开(公告)号：US20220291267A1
公开(公告)日：2022-09-15
申请号：US17592934
申请日：2022-02-04
Applicant: Renesas Electronics America Inc.
Inventor： David Mitchell GRICE
Abstract: In an embodiment, an apparatus is disclosed that includes a plurality of resistors arranged as a reverse bridge and configured to convert an input voltage to a scaled output voltage. The scaled output voltage is scaled to a target format based at least in part on a range of the input voltage and a fixed value of the plurality of resistors. The input voltage is generated based at least in part on at least one signal generated by a sensor based at least in part on a measurement of a property of a measurement target.
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公开(公告)号：US11418118B1
公开(公告)日：2022-08-16
申请号：US16785209
申请日：2020-02-07
Applicant: Renesas Electronics America Inc.
Inventor： Michael Jason Houston , Allan Warrington
Abstract: One or more embodiments relate to a regulation loop control circuit for regulation of a parameter such as an input voltage or output voltage for a buck-boost converter. In these and other embodiments, the regulation loop control circuit is configured to select between an input voltage loop for regulation of the input voltage or an output voltage loop for regulation of the output voltage in response to an input voltage error, an output voltage error, and a threshold detector to protect the converter without sacrificing output voltage regulation and transient response.
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公开(公告)号：US20220205816A1
公开(公告)日：2022-06-30
申请号：US17319659
申请日：2021-05-13
Applicant: Renesas Electronics America Inc.
Inventor： Gustavo James MEHAS , Damla ACAR , Ashley DE WOLFE , Pooja AGRAWAL , Nicholaus Wayne SMITH
Abstract: A method and a system may inductively determine a position of a display screen of a computing device. Associated processes may generate a magnetic field by providing an alternating current to a driver coil, and may generate a voltage at a sensor coil in response to the magnetic field. The system and method may additionally include determining a position of the display screen by executing an algorithm at a processor. An input to the algorithm may include voltage data associated with the voltage generated at the sensor coil.
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公开(公告)号：US11362590B1
公开(公告)日：2022-06-14
申请号：US16785198
申请日：2020-02-07
Applicant: Renesas Electronics America Inc.
Inventor： Michael Jason Houston , Allan Warrington
Abstract: One or more embodiments relate to a current limit mode control circuit for a buck-boost converter which can provide a stable switching of the converter by operating the converter in a current limit mode during an overcurrent condition, performing fewer state transitions while in the current limit mode, and/or by clamping (reducing to a lower value) the output of an error amplifier in the current limit mode for controlling a pulse width modulation (PWM) signal that drives the switching transistors.
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公开(公告)号：US20220173744A1
公开(公告)日：2022-06-02
申请号：US17106456
申请日：2020-11-30
Applicant: Renesas Electronics America Inc.
Inventor： Soonseob LEE , Kwang Seok HAN , Jong Chan HA , Ilhyun CHO , Heewon SUH , Hyunbae JIN , You Ho LEEM , Seunghun LEE , Kwang Hoon OH
Abstract: A hybrid comparator includes an analog signal combiner and a dynamic latch. The analog signal combiner is configured to receive an input analog signal and an input reference signal, and generate an analog output signal by combining the input analog signal and the input reference signal. The dynamic latch is configured to receive the analog output signal and a clock signal, and generate a digital output signal.
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