公开(公告)号：US20250141408A1

公开(公告)日：2025-05-01

申请号：US18498748

申请日：2023-10-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Aditya SUNDAR ,  Sumit DUBEY ,  Anand KANNAN

IPC: H03F1/30 ,  H03F3/217

Abstract: In an example, a system includes a loop filter including one or more integrators. The system includes a ramp generator. The system includes a comparator having a first input coupled to an output of the loop filter, a second input coupled to an output of the ramp generator, and having an output. The system includes a mute loop coupled to an input of the loop filter and the output of the comparator. The system includes a power stage having an input coupled to the output of the comparator, and having an output. The system includes a main loop coupled to the output of the power stage and the input of the loop filter. The system includes an integrated error detector having an input coupled to the loop filter, and having an output. The system includes a dual comparator having an input coupled to the output of the integrated error detector.

公开(公告)号：US20180337644A1

公开(公告)日：2018-11-22

申请号：US15856050

申请日：2017-12-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Aditya SUNDAR ,  Jasjot Singh CHADHA

IPC: H03F3/217 ,  H03F3/183 ,  H03F3/45

CPC classification number: H03F3/2173 ,  H03F1/083 ,  H03F1/34 ,  H03F3/183 ,  H03F3/187 ,  H03F3/45071 ,  H03F3/45475 ,  H03F2200/03 ,  H03F2200/171 ,  H03F2200/264 ,  H03F2200/78 ,  H03F2203/45264 ,  H03F2203/45512 ,  H03F2203/45526 ,  H03F2203/45528 ,  H03F2203/45594

Abstract: In some examples, an amplifier comprises a first integrator to receive a differential input signal, a second integrator coupled to the first integrator, a third integrator coupled to the second integrator, and a comparator to receive outputs of the second and third integrators, to compare each of the outputs to a reference signal that is below a power supply rail voltage supplied to the amplifier, and to produce an error current based on the comparison. The amplifier also comprises a feedback connection between the comparator and inputs to the second integrator. The feedback connection injects the inputs to the second integrator with a current that is determined at least in part by the error current.