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:
Jan. 13, 2026
Filed:
Aug. 23, 2022
Psemi Corporation, San Diego, CA (US);
Shota Ishihara, San Diego, CA (US);
PSEMI CORPORATION, San Diego, CA (US);
Abstract
Various methods and circuital arrangements for protection of a power amplifier from over temperature are presented. According to one aspect, a protection circuit coupled to a temperature sensor controls a biasing current or voltage to the power amplifier to limit a power dissipation through, and therefore a temperature of, the power amplifier when a high limit temperature is sensed. When the high limit temperature is sensed, the biasing current or voltage decreases as a linear function of the sensed temperature while allowing the power amplifier to operate. A slope of the linear function and a value of the high limit temperature can be made programmable. Programmability of the slope and the high limit temperature can be used to control biasing currents or voltages to a plurality of power amplifiers operating at different times and having different thermal requirements.