公开(公告)号：US20230120432A1

公开(公告)日：2023-04-20

申请号：US17956351

申请日：2022-09-29

Applicant: Texas Instruments Incorporated

Inventor： Austin Womac ,  Ryan Lind ,  Richard Stair

IPC: H02M3/158 ,  H02M1/32 ,  G05F1/59 ,  H03K19/20 ,  H03K17/687 ,  H03K17/081 ,  H02J7/00

Abstract: In a voltage converter, a blocking transistor has a conduction path between a power terminal and a converter terminal. A body diode of the blocking transistor: conducts current from the power terminal to the converter terminal; and blocks current from the converter terminal to the power terminal. A first switching transistor has a conduction path between the converter terminal and a switching terminal. A second switching transistor has a conduction path between the switching terminal and a ground terminal. A first gate driver has an output coupled to a control terminal of the first switching transistor. A second gate driver has an output coupled to a control terminal of the second switching transistor. A driver circuit has an output coupled to a control terminal of the blocking transistor. A bootstrap terminal of the driver circuit is coupled to a bias input of the first gate driver.

公开(公告)号：US20240250613A1

公开(公告)日：2024-07-25

申请号：US18375242

申请日：2023-09-29

Applicant: Texas Instruments Incorporated

Inventor： Benjamin M. McCue ,  Ryan Lind

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/0006 ,  H02M1/0009

Abstract: Systems, apparatus, articles of manufacture, and methods are disclosed to dynamically limit current for power converters. An example switch control circuitry configured to control a plurality of switches based on a loop voltage to control inductor current through a inductor; loop gain circuitry configured to generate the loop voltage based on an input voltage and a reference voltage; and clamping circuitry configured to clamp the loop voltage after the loop voltage exceeds a threshold, the switch control circuitry configured to clamp the inductor current based on the clamping of the loop voltage, wherein the clamping of the inductor current clamps an input current.