公开(公告)号：US10298127B2

公开(公告)日：2019-05-21

申请号：US15432327

申请日：2017-02-14

Applicant: Texas Instruments Incorporated

Inventor： Gerhard Thiele ,  Erich Bayer

IPC: H02M3/158 ,  H02M3/156 ,  H02M1/08 ,  H02M3/06 ,  H02M1/36

Abstract: A DCDC converter includes a transconductance amplifier, a comparator, a current driving component, an output impedance, a switch, a clamp resistor and a p-channel FET. The transconductance amplifier outputs a transconductance current and a switch control signal. The comparator has a two n-channel FET inputs forming a differential pair and outputs a compared signal. The current driving component generates an output current based on the compared signal. The output impedance component generates an output DC voltage based on the output current. The switch is between the two n-channel FETs and can open and close based on the switch control signal. The clamp resistor is arranged in series with the switch. The p-channel FET is in series with the clamp resistor and is controlled by the output DC voltage.

公开(公告)号：US12132402B2

公开(公告)日：2024-10-29

申请号：US18480074

申请日：2023-10-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/0032 ,  H02M1/0048

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: 1) a main comparator; 2) a bias current source coupled to the main comparator and configured to provide a bias current to the main comparator; and 3) a dynamic biasing circuit coupled to the main comparator and configured to add a supplemental bias current to the bias current in 100% mode of the buck converter. The supplemental bias current varies depending on an input voltage (VIN) and an output voltage (VOUT) of the buck converter.

公开(公告)号：US11881780B2

公开(公告)日：2024-01-23

申请号：US18173859

申请日：2023-02-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/0032 ,  H02M1/0048

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: 1) a main comparator; 2) a bias current source coupled to the main comparator and configured to provide a bias current to the main comparator; and 3) a dynamic biasing circuit coupled to the main comparator and configured to add a supplemental bias current to the bias current in 100% mode of the buck converter. The supplemental bias current varies depending on an input voltage (VIN) and an output voltage (VOUT) of the buck converter.

公开(公告)号：US11646666B2

公开(公告)日：2023-05-09

申请号：US17317101

申请日：2021-05-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Erich-Johann Bayer ,  Gerhard Thiele ,  Antonio Priego

IPC: H02M3/158 ,  H02M1/00 ,  H03K5/24

CPC classification number: H02M3/1586 ,  H02M1/0025 ,  H02M1/0043 ,  H02M1/0074 ,  H03K5/24

Abstract: A circuit includes a first power converter having a first voltage input and a first output. The circuit also includes a second power converter having a second voltage input coupled to the first voltage input, a clock input, and a second output. A phase shifter is coupled between the first output and the clock input of the second power converter.

公开(公告)号：US11101727B1

公开(公告)日：2021-08-24

申请号：US16790218

申请日：2020-02-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Anmol Sharma ,  Thomas Keller ,  Gerhard Thiele

IPC: H02M1/08 ,  H02M3/158 ,  H02M3/156

Abstract: A power converter includes a watchdog circuit having an input adapted to be coupled to a pause signal of a switching power supply. The watchdog circuit is configured to provide a start signal at an output thereof based on the pause signal indicating that the power converter has stopped switching for a threshold duration that is less than an audible range. A pulse generator circuit has an input coupled to the output of the watchdog circuit and is configured to generate at least one pulse based on the start signal. A switch circuit has an input terminal adapted to be coupled to an input voltage and at least one other terminal adapted to be coupled to an inductor. The switch circuit is configured to provide negative current from an output of the power converter through the at least one other terminal based on the at least one pulse.