公开(公告)号：US20240017300A1

公开(公告)日：2024-01-18

申请号：US17866329

申请日：2022-07-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： David Magee ,  James Griffin

IPC: B08B7/02 ,  B06B1/02 ,  B06B1/06 ,  G02B27/00

CPC classification number: B08B7/028 ,  B06B1/0276 ,  B06B1/0644 ,  G02B27/0006

Abstract: In one example, an apparatus comprises: a transducer, a driver circuit coupled to the transducer, a memory, and a controller. The memory is configured to store a power profile, the power profile including a mapping between power metrics and oscillation frequencies of the transducer, the power metrics being indicative of a power delivered to the transducer. The controller is coupled to the memory and the driver circuit, the controller configured to: obtain the power profile from the memory; determine a frequency of a driver signal based on the power profile; and provide the driver signal having the frequency to the driver circuit.

公开(公告)号：US20240017292A1

公开(公告)日：2024-01-18

申请号：US17865710

申请日：2022-07-15

Applicant: Texas Instruments Incorporated

Inventor： David Magee ,  James Griffin ,  Felipe Garza, III

IPC: B06B1/02 ,  G02B27/00 ,  B08B7/02 ,  B08B13/00

CPC classification number: B06B1/0215 ,  G02B27/0006 ,  B08B7/028 ,  B08B13/00 ,  B06B2201/70

Abstract: An example apparatus operable to provide power to a transducer via a regulator output, the power regulator comprising: filter circuitry including a filter input and a filter output, the filter output coupled to the regulator output; amplifier circuitry including an amplifier input and an amplifier output, the amplifier output coupled to the filter input; sensing circuitry including a sensing input and a sensing output, the sensing input coupled to the filter output and the regulator output; and a controller including a controller input coupled to the sensing output and including a controller output coupled to the amplifier input, the controller configured to: supply an excitation signal to the amplifier circuitry to cause the amplifier circuitry to supply the power based on the excitation signal; estimate a magnitude of the power based on measurements of current and voltage at the filter output.