公开(公告)号：US11218076B2

公开(公告)日：2022-01-04

申请号：US16558079

申请日：2019-08-31

Applicant: Texas Instruments Incorporated

Inventor： Antonio Priego ,  Johann Erich Bayer ,  Gerhard Thiele

IPC: H02M3/158 ,  H02M1/00

Abstract: A switching converter circuit includes a hysteretic comparator with a reference voltage (VREF) node and a feedback node. The switching converter circuit also includes a switchable error amplifier circuit coupled to the feedback node of the hysteretic comparator. The switchable error amplifier circuit includes an error amplifier that is coupled to the feedback node during a power-save mode and that is decoupled from the feedback node during a deep power-save mode initiated in response to a duration of the power-save mode being greater than a time threshold.

公开(公告)号：US10992229B2

公开(公告)日：2021-04-27

申请号：US16655876

申请日：2019-10-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Gerhard Thiele ,  Manuel Wiersch ,  Antonio Priego ,  Johann Erich Bayer ,  Stefan Herzer

IPC: H02M3/156 ,  H02M1/00 ,  H02M3/158

Abstract: An electrical system includes: 1) a buck converter; 2) a battery coupled to an input of the buck converter; and 3) a load coupled to an output of the buck converter. The buck converter includes a high-side switch, a low-side switch, and regulation loop circuitry coupled to the high-side switch and the low-side switch. The regulation loop circuitry includes a comparator with preamplifier gain adjustment circuitry configured to adjust a preamplifier gain of the comparator based on an overdrive voltage.