公开(公告)号：US20230198469A1

公开(公告)日：2023-06-22

申请号：US17556181

申请日：2021-12-20

Applicant: Renesas Electronics America Inc.

Inventor： Hussain Hasanali LADHANI ,  Ramanujam SRINIDHI EMBAR

IPC: H03F1/02 ,  H03F3/24 ,  H01P5/16 ,  H04B1/04

CPC classification number: H03F1/0288 ,  H03F3/245 ,  H01P5/16 ,  H04B1/0475 ,  H03F2200/451 ,  H03F2200/372

Abstract: Apparatuses and systems implementing an amplifier module are described. The amplifier module can include a substrate. A driver amplifier die, a splitter network, an output amplifier die, a bias controller, and a combiner network can be coupled to the substrate. The driver amplifier die can be configured to receive an input radio frequency (RF) signal. The splitter network can be configured to split an intermediate RF signal outputted from the driver amplifier die into first and second RF signals. The output amplifier die can be configured to receive the first and second RF signals. The bias controller can be configured to bias the driver amplifier die and the output amplifier die. The combiner network can be configured to combine first and second outputs of the output amplifier die to generate an output RF signal and terminate at least one harmonic of the output amplifier die's output impedance.

公开(公告)号：US11674987B1

公开(公告)日：2023-06-13

申请号：US16685574

申请日：2019-11-15

Applicant: RENESAS ELECTRONICS AMERICA INC.

Inventor： Zhihong Yu

IPC: G01R22/06 ,  H02J9/06

CPC classification number: G01R22/066 ,  H02J9/061 ,  H02J9/068 ,  H02J2310/12

Abstract: One or more embodiments relate to a switch-mode power supply control circuit that can be used to provide power to regular single phase or three phase energy meter, while also offering a simple low cost method to detect a magnetic tampering event that usually occurs on energy meter. In one example, the switch-mode power supply for the energy meter is a flyback type switch mode power supply comprising a power switch, a switching controller, and a slew rate based magnetic field detection circuit which is configured to enable a magnetic tampering detection signal that can be communicated to the switching controller. Upon detection of a magnetic tampering event, the power supply and the supporting circuitry can raise the switching frequency of the power switch in order to provide more power to the output or cutoff power to the consumer's power outlet and even report the tampering event to the power station.

公开(公告)号：US20230136373A1

公开(公告)日：2023-05-04

申请号：US17970161

申请日：2022-10-20

Applicant: Renesas Electronics America Inc.

Inventor： Ruggero LEONCAVALLO

IPC: G01D5/18

Abstract: A method for dynamic error compensation of a position sensor and a position sensor are disclosed. In the method, a calculated speed of a moving target for a current determined position is compared to a calculated running average of the speed of the moving target over a certain number of determined positions and if the calculated speed of the moving target for the current position is within a first window around the calculated running average of the speed of the moving target over the certain number of determined positions the dynamic angle error is not re-calculated for the current determined position, and/or if the calculated speed of the moving target for the current determined position exceeds a second window the previously calculated running average is deleted and the calculation of the running average of the speed of the moving target over a certain number of determined positions is restarted.

公开(公告)号：US11632003B2

公开(公告)日：2023-04-18

申请号：US17835885

申请日：2022-06-08

Applicant: Renesas Electronics America Inc.

Inventor： Gustavo Mehas

IPC: H02J50/80 ,  H02J50/12 ,  H02J50/60

Abstract: A current sensing circuit and a minimum operating frequency for a wireless power transmission system is presented. A method of measuring current through a wireless power transmit coil, includes receiving a signal from a switching circuit into a sampling circuit; filtering the sampled signal from the sampling circuit; biasing the filtered sampled signal, wherein the biasing occurs only when the sampling circuit is active; and amplifying the biased signal to provide a transmit coil current signal. A method of measuring current through a wireless power transmit coil, includes receiving a signal from a switching circuit into a sampling circuit; filtering the sampled signal from the sampling circuit; biasing the filtered sampled signal, wherein the biasing occurs only when the sampling circuit is active; and amplifying the biased signal to provide a transmit coil current signal.

公开(公告)号：US20230116552A1

公开(公告)日：2023-04-13

申请号：US17958707

申请日：2022-10-03

Applicant: Renesas Electronics America Inc.

Inventor： Gentjan Qama ,  Jürgen Peter Kernhof ,  Angel Karachomakov ,  Andreas Leo Buchinger ,  Thomas Oswald

IPC: G01D5/22 ,  G01D18/00

Abstract: A position sensor, wherein the position sensor detects the movement of a target relative to a sine receiver coil and a cosine receiver coil and generates a corresponding sine signal and a corresponding cosine signal, and a method for error detection of a position sensor.

公开(公告)号：US11621635B2

公开(公告)日：2023-04-04

申请号：US17371785

申请日：2021-07-09

Applicant: Renesas Electronics America Inc.

Inventor： Long Yu ,  Jin Yang ,  Jianhua Yang ,  Pengcheng Tang ,  Xiaodong Zhan

IPC: H02M3/157 ,  H02M3/158 ,  H03K19/20 ,  H03K3/017 ,  H02M1/00

Abstract: Methods and apparatuses for regulating a power converter are described. A device comprising a control circuit and a logic circuit can be integrated in a controller coupled to the power converter. The control circuit can generate a constant off-time signal based on a ramp signal and an error signal. The logic circuit can generate a control signal based on the constant off-time signal and a constant on-time signal. The logic circuit can output the control signal to the power converter. In response to an on-time period of the constant off-time signal being less than an on-time period of the constant on-time signal, the control signal can vary according to the constant on-time signal. In response to the on-time period of the constant off-time signal being greater than the on-time period of the constant on-time signal, the control signal can vary according to the constant off-time signal.

公开(公告)号：US20230084847A1

公开(公告)日：2023-03-16

申请号：US17475814

申请日：2021-09-15

Applicant: Renesas Electronics America Inc.

Inventor： Jiangjian Huang ,  Hulong Zeng ,  Gopinath Akkinepally ,  Amit Dharmendra Bavisi

IPC: H04B5/00 ,  H04L27/04 ,  H04L27/06 ,  H04L27/12 ,  H04L27/14 ,  H02J50/80

Abstract: Systems and apparatuses for wireless power transfer system are described. A receiver may send an amplitude shift key (ASK) signal to a transmitter. The transmitter may receive the ASK signal from the receiver. The transmitter may perform a demodulation on the ASK signal. The transmitter may, in response to a failure to demodulate the ASK signal, encode a notification of failure in a frequency shift key (FSK) signal. The transmitter may transmit the FSK signal to the receiver. The receiver may receive the FSK signal. The receiver may perform a function to resolve the failure to demodulate the ASK signal.

公开(公告)号：US20230079818A1

公开(公告)日：2023-03-16

申请号：US17992849

申请日：2022-11-22

Applicant: Renesas Electronics America Inc.

Inventor： Ahmad NASSER ,  Tobias BELITZ

IPC: G06F13/42 ,  H04L9/06

Abstract: According to certain general aspects, the present embodiments relate generally to securing communication between ECUs. Example implementations can include a method of securely transmitting Controller Area Network (CAN) protocol frames via a CAN controller.

公开(公告)号：US11561572B2

公开(公告)日：2023-01-24

申请号：US17136579

申请日：2020-12-29

Applicant: Renesas Electronics America Inc.

Inventor： Leon Goldin ,  Greg Armstrong

IPC: G06F1/04 ,  G06F1/14 ,  G06F1/10

Abstract: Methods and system for clock alignment are described. In an example, a timing device can distribute a clock signal to a line card via a trace of a backplane. The timing device can further send a pulse to the line card at a first time via the trace. The timing device can further receive a return pulse from the line card at a second time via the trace. The timing device can determine a time difference between the first time and the second time. The time difference can indicate a propagation delay associated with the line card and the trace. The timing device can send the time difference to the line card. The line card can adjust a phase delay offset of the line card using the time difference.

公开(公告)号：US20230012015A1

公开(公告)日：2023-01-12

申请号：US17527661

申请日：2021-11-16

Applicant: Renesas Electronics America Inc.

Inventor： Juan Qiao ,  Chenxiao Ren ,  Yue Wang

IPC: H02M1/00 ,  G11C11/4074 ,  H02M3/07

Abstract: In an embodiment, an apparatus is disclosed that includes a power management integrated circuit (PMIC). The PMIC includes a voltage regulator supplied by a first power source and configured to generate a first output and a charge pump supplied by a second power source and configured to generate a second output. A bias voltage output of the power management integrated circuit is generated based at least in part on the first output and the second output. The charge pump is configured to adjust the second output based at least in part on a comparison between the bias voltage output and a reference voltage.