The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 17, 2026

Filed:

May. 14, 2024
Applicant:

Richtek Technology Corp., Hsinchu County, TW;

Inventors:

Ping-Liang Chen, Hsinchu, TW;

Li-Di Lo, Hsinchu, TW;

Chien-Fu Tang, Hsinchu, TW;

Assignee:

RICHTEK TECHNOLOGY CORP., Hsinchu County, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/0812 (2006.01); H03K 17/08 (2006.01);
U.S. Cl.
CPC ...
H03K 17/08122 (2013.01); H03K 2017/0806 (2013.01);
Abstract

A gate drive circuit includes a voltage summer, a driver, a power transistor and a resistor. The voltage summer includes a first input terminal for receiving a reference voltage, a second input terminal for receiving a common source voltage, and an output terminal for generating a summed voltage according to the common source voltage and the reference voltage. The driver includes a first input terminal coupled to the output terminal of the voltage summer, a second input terminal for receiving a pulse width modulation (PWM) signal, and an output terminal for generating a gate voltage according to the summed voltage and the pulse width modulation signal. The power transistor includes a first terminal, a second terminal, and a control terminal coupled to the output terminal of the driver. The resistor is coupled between the second terminal of the power transistor and a ground terminal.


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