Title:
デューティサイクル制御を備えるＤ級アンプ
Document Type and Number:
Japanese Patent JP7152642
Kind Code:
B2
Abstract:
A class-D amplifier includes an output driver, a pulse width modulator, an integrator, and duty cycle control circuitry. The output driver is configured to drive a loudspeaker. The pulse width modulator is coupled to the output driver. The integrator is coupled to the pulse width modulator. The duty cycle control circuitry is coupled to the integrator. The duty cycle control circuitry is configured to monitor amplitude of output signal of the integrator, and change an average duty cycle of signal at an output of the output driver as a function of the amplitude.
Inventors:
Jianquan Liao
Siuyuan Wang
Siuyuan Wang
Application Number:
JP2020528286A
Publication Date:
October 13, 2022
Filing Date:
November 22, 2017
Export Citation:
Assignee:
Texas Instruments Incorporated
International Classes:
H03F3/217
Domestic Patent References:
| JP254695B2 | ||||
| JP2015216426A | ||||
| JP200817358A | ||||
| JP2015516722A |
Attorney, Agent or Firm:
Hitoshi Sato