公开(公告)号：US11463005B2

公开(公告)日：2022-10-04

申请号：US16859467

申请日：2020-04-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Huijuan Li ,  Ronnie Antone Bean ,  Benjamin McCue ,  Ryan Erik Lind

IPC: H02M3/158 ,  H02M1/00

Abstract: In some examples, a converter circuit can be configured to operate in a buck-boost mode. The converter circuit can include a ramp generator that can be configured to generate first and second ramp signals that at least partially overlap respective portions of a buck-boost region during each intermediate clock cycle between clock cycles of a clock signal. By generating the first and second ramp signals during each intermediate clock cycle, first and second drivers can be provided to toggle switches of a power stage, such that an output voltage provided by the power stage can be averaged out over clock cycles of the clock signal to allow for a gradual transition between buck and boost modes of operation of the converter circuit. In some examples, the converter circuit can be configured to operate in a test mode and can be configured to implement trimming of a ramp signal.

公开(公告)号：US20240259010A1

公开(公告)日：2024-08-01

申请号：US18455656

申请日：2023-08-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Xiaochun Zhao ,  Abidur Rahman ,  Eung Jung Kim ,  Tianhong Yang ,  Huijuan Li

IPC: H03K17/0812

CPC classification number: H03K17/0812

Abstract: A transistor is coupled between a first voltage input and a voltage output in a first current path. First circuitry is coupled to a second voltage input, a control terminal of the transistor, and the voltage output. Second circuitry is coupled between the control terminal and ground in a second current path and between the control terminal and ground in a third current path parallel to the second current path. The second current path includes the control terminal, first and second terminals of the second circuitry, and ground. The third current path includes the control terminal, a second and the third terminal of the second circuitry, and ground. Third circuitry is coupled between the control terminal and the voltage output in a fourth current path. The fourth current path includes the control terminal, first and second terminals of the third circuitry, and the voltage output.