公开(公告)号：US20250105646A1

公开(公告)日：2025-03-27

申请号：US18473606

申请日：2023-09-25

Applicant: Renesas Electronics America Inc.

Inventor： Sungkeun LIM ,  Yen-Mo CHEN ,  Chong HAN ,  Dongwoo HAN

IPC: H02J7/00

Abstract: Systems and methods for operating a battery charger are described. A controller can operate a battery charger under a charging mode to use an adapter power to support a system power of the battery charger. The controller can detect the adapter power reaches a maximum, transition the battery charger into a discharging mode to decrease a battery charging current in the battery charger to support the system power and decrease a system voltage at the output of the battery charger. The controller can detect the system voltage is less than a battery voltage of the battery by an offset and transition the battery charger from the discharging mode to a pass-through mode that continues to discharge the battery, where the PTM can cause the battery charger to discharge the battery without performing switching.

公开(公告)号：US20250096183A1

公开(公告)日：2025-03-20

申请号：US18470781

申请日：2023-09-20

Applicant: RENESAS ELECTRONICS AMERICA INC.

Inventor： Martin Ashley VAGUES

IPC: H01L23/00 ,  H01L21/56 ,  H01L25/00 ,  H01L25/18

Abstract: A method includes preparing a substrate; cleaning a chip mounting surface of the substrate; supplying a homogenized die-bonding paste onto the chip mounting surface, and attaching a semiconductor chip on the chip mounting surface via the homogenized die-bonding paste, the semiconductor chip having a front surface, a back surface opposite the front surface, and a first electrode formed on the front surface; curing the homogenized die-bonding paste; electrically connecting the first electrode with a first terminal of the substrate via a first wire; and sealing the semiconductor chip and the first wire with a sealing resin, wherein the homogenized die-bonding paste used in supplying is initially provided as an unstirred die-bonding paste including a plurality of Ag fillers, and wherein, in supplying, the homogenized die-bonding paste is supplied onto the chip mounting surface after the unstirred die-bonding paste along with Ag fillers is stirred for a first predetermined time period.

公开(公告)号：US20250087404A1

公开(公告)日：2025-03-13

申请号：US18043468

申请日：2023-02-03

Applicant: Renesas Electronics America Inc.

Inventor： Sheng Yuan ,  Shangfeng Jiang ,  Weiwei Zhou ,  Jiangjian Huang ,  Bo Tang

IPC: H01F27/28 ,  H01F41/04 ,  H02J50/10

Abstract: Structures, devices, and methods for wireless power transfer systems are described. A structure can include a plurality of strands arranged into a first coil layer and a second coil layer. The plurality of strands can be formed on a parallel path surrounding a center of the structure. The plurality of strands can extend away from the center on the first coil layer. The plurality of strands can extend towards the center on the second coil layer. For every fixed interval along a length of the structure, a first strand among the plurality of strands can be looped from the first coil layer to the second coil layer and a second strand among the plurality of strands can be looped from the second coil layer to the first coil layer.

公开(公告)号：US20250062690A1

公开(公告)日：2025-02-20

申请号：US18447760

申请日：2023-08-10

Applicant: RENESAS ELECTRONICS AMERICA INC.

Inventor： Chi MO ,  Shubing ZHAI ,  Xueqiang DING ,  Xin XUE

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/14

Abstract: An apparatus comprising a controller for a switching converter for receiving an input voltage and for providing an output voltage, the switching converter comprising a first switch and an energy storage element, the controller being configured to provide a first control signal to the first switch, the first control signal having a switching frequency, and control the switching frequency such that the switching frequency is substantially unaffected by variations in one or more of a load current, an equivalent series resistance of the energy storage element, and a turn on resistance of the first switch.

公开(公告)号：US12199610B2

公开(公告)日：2025-01-14

申请号：US18531639

申请日：2023-12-06

Applicant: Renesas Electronics America Inc.

Inventor： Dong-Young Chang ,  Steven Ernest Finn

IPC: H03K3/017 ,  H03K5/156 ,  H03K7/08 ,  H03K17/687

Abstract: In an embodiment, an apparatus is disclosed that includes a duty cycle controller. The duty cycle controller includes a tuning circuit comprising a first field-effect transistor. The first field-effect transistor is configured to implement a capacitor. The duty cycle controller further includes an edge delay circuit. The edge delay circuit includes a second field-effect transistor that, when activated by an input clock signal of the duty cycle controller, is configured to connect a voltage source to an output clock signal of the duty cycle controller. The edge delay circuit further includes a third field-effect transistor that, when activated, is configured to connect the first field-effect transistor of the tuning circuit to the output clock signal.

公开(公告)号：US12176832B2

公开(公告)日：2024-12-24

申请号：US18155288

申请日：2023-01-17

Applicant: Renesas Electronics America Inc.

Inventor： Josef Janisch

IPC: H03M1/12 ,  H02P21/18 ,  H02P29/024

Abstract: A method and position sensor system for detecting an error of a position sensor system are provided. The method and position sensor system implementing the steps of: determining the period length of three previous signal periods of the position signal, comparing the period lengths of the three previous signal periods of the position signal to detect a constant velocity position signal, a constant accelerating or decelerating position signal or position signal with a constant jerk, predicting the period length of the next signal period of the position signal, transferring the predicted period length of the next signal period to a predicted position signal for the next signal period, and comparing the predicted position signal with the actual position signal to detect errors in the position signal of the next signal period.

公开(公告)号：US12136836B2

公开(公告)日：2024-11-05

申请号：US17479214

申请日：2021-09-20

Applicant: Renesas Electronics America Inc.

Inventor： Sungkeun Lim ,  Yen-Mo Chen ,  Keeho Shin

IPC: H02J7/00 ,  H02J7/34

Abstract: Battery charger systems and apparatuses are described. In an example, an apparatus may include a first controller, a first port connected to the first controller, a first charger module connected to the first controller, a second controller, a second port connected to the second controller, and a second charger module connected to the second controller. The first controller may be configured to form a first connection path between the first charger module and the second port via the second controller. The first controller may be further configured to form a second connection path between the second charger module and the first port via the first controller.

公开(公告)号：US20240339848A1

公开(公告)日：2024-10-10

申请号：US18297942

申请日：2023-04-10

Applicant: Renesas Electronics America Inc.

Inventor： Hulong ZENG ,  Eric Tong Lin HUANG ,  Chan Young JEONG

IPC: H02J7/00 ,  H02J50/10

CPC classification number: H02J7/00308 ,  H02J50/10

Abstract: Systems and methods for wireless power transfer systems are described. A controller of a device can detect an overvoltage condition associated with direct current (DC) power being outputted by a rectifier. The controller can, in response to detection of the overvoltage condition, the controller can control a phase of a current of alternating current (AC) power being received by the rectifier to cause the current and a voltage of the AC power to be out of phase.

公开(公告)号：US20240321824A1

公开(公告)日：2024-09-26

申请号：US18187300

申请日：2023-03-21

Applicant: Renesas Electronics America Inc.

Inventor： Tetsuo SATO ,  Jianghong DING ,  Yonggoo EOM

IPC: H01L23/00 ,  H01L27/088 ,  H03K17/687

CPC classification number: H01L24/85 ,  H01L24/45 ,  H01L27/088 ,  H03K17/6871 ,  H03K17/6877 ,  H01L2924/1426 ,  H03K2217/0063

Abstract: Circuits and devices for a motor driver are described. A hybrid integrated circuit (IC) can include a driver IC, a first IC, and a plurality of second ICs. The first IC can include a plurality of high-side metal-oxide-semiconductor field-effect transistors (MOSFETs). The first IC can further include a common drain terminal connected to drains of the plurality of high-side MOSFETs. Each one of the plurality of second ICs can include a respective low-side MOSFET. The hybrid IC can further include a first set of bonding wires connecting the driver IC to the first IC. The hybrid IC can further include a second set of bonding wires connecting the driver IC to the plurality of second ICs. The hybrid IC can further include a third set of bonding wires connecting the first IC to the plurality of second ICs.

公开(公告)号：US12068691B2

公开(公告)日：2024-08-20

申请号：US17546368

申请日：2021-12-09

Applicant: Renesas Electronics America Inc.

Inventor： Steven Ernest Finn ,  Ajinkya Manohar Munge

IPC: H02M3/158 ,  G05F1/575 ,  G11C5/14

CPC classification number: H02M3/1582 ,  G05F1/575 ,  G11C5/14

Abstract: In an embodiment, an apparatus is disclosed that comprises a voltage regulator and a regulator booster. The voltage regulator is supplied by an input and is configured to generate a regulated output. The regulated output has a voltage corresponding to an operating point of the voltage regulator. The regulator booster is connected to the voltage regulator and, when activated, is configured to boost the voltage of the regulated output by a target amount. The target amount is at least a portion of a magnitude of a voltage droop relative to the operating point that is caused by a change in a current load on the regulated output.