公开(公告)号：US20240313768A1

公开(公告)日：2024-09-19

申请号：US18306378

申请日：2023-04-25

Applicant: Texas Instruments Incorporated

Inventor： Sri Navaneethakrishnan Easwaran ,  Angelo Pereira ,  Yueming Sun ,  Kae Wong ,  Ahmed E Hashim ,  Artur Lewinski

IPC: H03K17/687 ,  H03K17/10 ,  H03K17/567

CPC classification number: H03K17/687 ,  H01L27/02 ,  H03K17/102 ,  H03K17/567

Abstract: Described embodiments include a voltage converter power circuit having a high-voltage rated first transistor with a first current terminal coupled to an input voltage terminal, and a second current terminal. A second transistor, a low-voltage rated transistor, has a second control terminal, a third current terminal coupled to the second current terminal, and a fourth current terminal coupled to a switching terminal. A third transistor, a high-voltage rated transistor, has a fifth current terminal coupled to the switching terminal, a sixth current terminal, and a third control terminal. A fourth transistor, a low-voltage rated transistor, is coupled between the sixth current terminal and a ground terminal. A bleeder circuit is coupled between the seventh and eighth current terminals and is configured to prevent a voltage across the fourth transistor from exceeding a breakdown voltage.

公开(公告)号：US20240258915A1

公开(公告)日：2024-08-01

申请号：US18171846

申请日：2023-02-21

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Daniel Tennant ,  Ahmed E Hashim

IPC: H02M3/157 ,  H02M3/158

CPC classification number: H02M3/157 ,  H02M3/158

Abstract: A voltage converter includes a power stage, a compensator circuit, and a modulator circuit. The power stage circuit has an input voltage terminal, an output voltage terminal, and a pulse width modulation (PWM) control input. The compensator circuit has a voltage input coupled to the output voltage terminal and has a compensation output. The modulator circuit has a compensation voltage input and a PWM control output. The compensation voltage input is coupled to the compensation output, and the PWM control output is coupled to the PWM control input. The modulator circuit includes a slope compensation ramp generator circuit that is configured to generate a slope compensation voltage ramp having a slope that decreases during at least a portion of a switching cycle.