公开(公告)号：US20240341194A1

公开(公告)日：2024-10-10

申请号：US18232953

申请日：2023-08-11

Applicant: Microchip Technology Incorporated

Inventor： Razvan Costache ,  Miguel Angel Salcedo

IPC: H10N30/00 ,  G01L1/16 ,  H10N30/80

CPC classification number: H10N30/101 ,  G01L1/16 ,  H10N30/802

Abstract: A device includes a high-voltage amplifier to amplify a bursted signal and may couple to a driver circuit to drive a piezoelectric actuator. During the on-time of the bursted signal, a feedback circuit may compensate for non-idealities in the system and may equalize the signal at the actuator and the output of the high-voltage amplifier. During the off-time of the bursted signal, a signal conditioning circuit may sense a difference signal between the signal at the actuator and the signal at the high-voltage amplifier output and may interpret this difference signal as pressure applied to the piezoelectric actuator.

公开(公告)号：US20250125779A1

公开(公告)日：2025-04-17

申请号：US18631132

申请日：2024-04-10

Applicant: Microchip Technology Incorporated

Inventor： Razvan Costache

IPC: H03F3/217 ,  H10N30/20

Abstract: An input signal may be converted into a first PWM signal and a second PWM signal at a PWM controller circuit. The first PWM signal and second signal output may drive a driver circuit. The driver circuit may receive a high-voltage supply from a boost converter or other power circuit. The driver circuit may include a high-side device and a low-side device. The output of the driver circuit may drive a filter circuit, the filter circuit comprising a filter capacitor, an inductor and a haptic actuator. The haptic actuator may produce a desired haptic response at the haptic actuator.

公开(公告)号：US20240184369A1

公开(公告)日：2024-06-06

申请号：US18369912

申请日：2023-09-19

Applicant: Microchip Technology Incorporated

Inventor： Razvan Costache

IPC: G06F3/01 ,  G08B6/00

CPC classification number: G06F3/016 ,  G08B6/00

Abstract: A device includes a receiver to receive an input audio signal and output a received audio signal, and signal conversion circuitry to apply a frequency-dependent adjustment to the received audio signal to convert the received audio signal to a haptic signal for use by a haptic actuator.