公开(公告)号：US20170230020A1

公开(公告)日：2017-08-10

申请号：US15497313

申请日：2017-04-26

Applicant: STMicroelectronics S.r.I.

Inventor： Marco Raimondi ,  Edoardo Botti

IPC: H03F3/45 ,  H03F3/217 ,  H03F3/185

CPC classification number: H03F3/45932 ,  H03F1/0205 ,  H03F3/183 ,  H03F3/185 ,  H03F3/211 ,  H03F3/217 ,  H03F3/2173 ,  H03F2200/03 ,  H03F2200/129 ,  H03F2200/171 ,  H03F2200/258 ,  H03F2200/351 ,  H03F2200/78 ,  H03F2203/21106

Abstract: A switching amplifier includes a first half-bridge PWM modulator, a second half-bridge PWM modulator, and at least one amplifier stage configured to receive input signals. The switching amplifier also includes a PWM control stage configured to control switching of the first PWM modulator and of the second PWM modulator as a function of the input signals, by respective first PWM control signals and second PWM control signals. The amplifier stage and the PWM control stage have a fully differential structure.