公开(公告)号：US11152855B2

公开(公告)日：2021-10-19

申请号：US16779175

申请日：2020-01-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sang Yong Lee ,  Paul David Curtis

IPC: H02M3/156 ,  H02M1/44 ,  H04B1/69

Abstract: At least some aspects of the present disclosure provide for a system. In some examples, the system includes a pulse width modulation (PWM) generator configured to generate a PWM signal. The PWM generator generates the PWM signal by generating a first signal having a first dithering profile and a first frequency bandwidth, generating a second signal having a second dithering profile and a second frequency bandwidth greater than the first frequency bandwidth, modulating the second signal with the first signal to generate a dual random spread spectrum signal, and generating the pulse width modulation signal according to the dual random spread spectrum signal.

公开(公告)号：US11799422B2

公开(公告)日：2023-10-24

申请号：US17681945

申请日：2022-02-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Muawiya Ali Al-Khalidi ,  Angelo William Pereira ,  Pinar Korkmaz ,  Paul David Curtis

IPC: H03B5/04 ,  H03K3/03 ,  H03K5/24

CPC classification number: H03B5/04 ,  H03K3/0315 ,  H03K5/24

Abstract: An oscillator circuit includes a comparator having first and second inputs, the first input configured to be coupled to a reference voltage. The oscillator circuit also includes a capacitor and a first current source. The capacitor is coupled between the second input and ground. The first current source is coupled between a supply voltage terminal and the capacitor. The first current source is configured to generate a current to the capacitor that is proportional to absolute temperature.

公开(公告)号：US12051973B2

公开(公告)日：2024-07-30

申请号：US17459928

申请日：2021-08-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sang Yong Lee ,  Paul David Curtis

IPC: H02M3/156 ,  H02M1/44 ,  H04B1/69

CPC classification number: H02M3/156 ,  H02M1/44 ,  H04B1/69

Abstract: At least some aspects of the present disclosure provide for a system. In some examples, the system includes a pulse width modulation (PWM) generator configured to generate a PWM signal. The PWM generator generates the PWM signal by generating a first signal having a first dithering profile and a first frequency bandwidth, generating a second signal having a second dithering profile and a second frequency bandwidth greater than the first frequency bandwidth, modulating the second signal with the first signal to generate a dual random spread spectrum signal, and generating the pulse width modulation signal according to the dual random spread spectrum signal.