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:
Mar. 22, 2011
Filed:
Apr. 13, 2009
Prashant Shamarao, Duluth, GA (US);
Prashant Shamarao, Duluth, GA (US);
Netlogic Microsystems, Inc., Santa Clara, CA (US);
Abstract
A substrate biasing circuit may include a first pump control circuit that generates a first control signal in response to a first reference voltage and a voltage of a first substrate portion, and includes a first reference generator coupled between a temperature compensated voltage and a reference power supply voltage that varies the first reference voltage in response to the voltage of the first substrate voltage and the temperature compensated voltage. A first clamp circuit may generate a first clamp signal in response to a first limit voltage and the voltage of the first substrate portion, the first limit voltage being a scaled version of the temperature compensated voltage. A first charge pump may pump the first substrate portion in at least a first voltage direction in response to the first control signal, and is prevented from pumping in the first voltage direction in response to the first clamp signal.