Invention Grant
- Patent Title: Switched-mode DC/DC converter having a bootstrapped high-side driver
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Application No.: US16265478Application Date: 2019-02-01
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Publication No.: US10784764B2Publication Date: 2020-09-22
- Inventor: Eduardas Jodka , Julian Becker , Carsten Stoerk
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Lawrence J. Bassuk; Charles A. Brill; Frank D. Cimino
- Main IPC: H03K99/00
- IPC: H03K99/00 ; H02M1/08 ; H02M3/155 ; H03K17/687 ; H02M1/00

Abstract:
A gate driver for a high-side NMOS power transistor in a DC/DC boost converter includes first and second switches coupled in series between an output pin and the gate of the high-side transistor. A third switch is coupled between the gate and a switch-node between the high-side and low-side transistors, the switch node also being coupled to an input pin. Fourth and fifth switches are coupled in series between the output pin and a clamp pin. Sixth and seventh switch are coupled in series between the output pin and a ground pin. First and second bootstrap capacitors have respective first terminals coupled to a first node between the first and second switches. The first capacitor has a second terminal coupled to a node between the fourth and fifth switches; the second capacitor has a second terminal coupled to a node between the sixth and seventh switches.
Public/Granted literature
- US20200251976A1 SWITCHED-MODE DC/DC CONVERTER HAVING A BOOTSTRAPPED HIGH-SIDE DRIVER Public/Granted day:2020-08-06
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