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:
Apr. 30, 2019
Filed:
Feb. 06, 2018
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Rodrigo Fernandez-Mattos, Solihull, GB;
Priya Kakarla Naga Lakshmi, Bangalore, IN;
Sesh Mohan Rao, Bangalore, IN;
Sridhar Katakam, Bangalore, IN;
Somasekhar Valleru, Bangalore, IN;
Shobhit Agrawal, Bangalore, IN;
HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);
Abstract
Aspects include a hold-up capacitor charging circuit for a power supply. The hold-up capacitor charging circuit includes a voltage boosting charge pump circuit with a hold-up capacitor electrically coupled to a voltage source. The hold-up capacitor charging circuit also includes a fly-back circuit. The fly-back circuit includes a transformer with a primary winding electrically coupled to the voltage source and a secondary winding electrically coupled to a load. A switch is electrically coupled to the primary winding and the voltage boosting charge pump circuit. A controller is operable to open and close the switch to control energy transfer from the primary winding to the secondary winding and charge the hold-up capacitor responsive to voltages of the voltage source, the voltage boosting charge pump circuit, and a reflected voltage of the secondary winding at the primary winding.