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:
Jul. 24, 2012
Filed:
Jul. 08, 2009
Achim Stellberger, Kronau, DE;
Frank Schwiderski, Heidelberg, DE;
Achim Stellberger, Kronau, DE;
Frank Schwiderski, Heidelberg, DE;
Dialog Semiconductor GmbH, Kirchheim/Teck-Nabern, DE;
Abstract
Systems and methods to achieve a startup circuit of bandgap voltage reference generator circuits monitoring a current flow in the bandgap voltage reference generator circuit have been achieved. The startup circuit can operate at supply voltages of about one threshold voltage and is therefore appropriate for low voltage applications. The monitoring of a current through an electrical component inside the bandgap voltage reference generator circuit by replication the component branch in a scaled version saves power and does not disturb the normal operation of the current-mode bandgap voltage reference generator. The startup circuit invented can be applied for current-mode bandgap voltage reference generator circuits as well as for voltage-mode bandgap voltage reference generator circuits.