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.
Patent No.:
Date of Patent:
Sep. 29, 2020
Filed:
May. 10, 2019
Qorvo Us, Inc., Greensboro, NC (US);
Michael J. Murphy, Statesville, NC (US);
Michael R. Kay, Summerfield, NC (US);
Nadim Khlat, Cugnaux, FR;
Qorvo US, Inc., Greensboro, NC (US);
Abstract
A power switch with a bootstrap driver for continuous time operation is disclosed. In an exemplary aspect, the power switch selectively connects power management circuitry to one or more power amplifier stages in a radio frequency (RF) front end. The bootstrap driver provides a constant gate to source voltage during an enabled state of the power switch such that a switching element can remain closed with near-constant closed switch resistance in the presence of varying signals (e.g., varying power signals) passing through the power switch. The bootstrap driver can use a variable clock frequency to quickly close the power switch and resistor-capacitor (RC) filtering to reduce noise contribution to the signal path through the power switch. In some examples, a constant voltage reference provides battery independent voltage control of the gate to source voltage of the power switch.