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:
Feb. 21, 2023
Filed:
May. 06, 2021
Pegatron Corporation, Taipei, TW;
Hsiao-Wei Sung, Taipei, TW;
Chun-Wei Ko, Taipei, TW;
Yu-Kai Shen, Taipei, TW;
Chih-Wei Huang, Taipei, TW;
PEGATRON CORPORATION, Taipei, TW;
Abstract
The application discloses a power supply circuit and a power supply device. A drain of a first N-type metal-oxide-semiconductor field-effect transistor (MOSFET) receives a first input voltage. A filter is coupled to a source of the first N-type MOSFET and is configured to output an output voltage. A non-inverting input terminal of an operational amplifier is coupled to a ground terminal through a first capacitor. A control circuit is coupled to an inverting input terminal of the operational amplifier. One terminal of a switch is coupled to a gate of the first N-type MOSFET, and the other terminal is switchably coupled to the control circuit or an output terminal of the operational amplifier, so that the gate of the first N-type MOSFET is switched to be coupled to the control circuit or the output terminal of the operational amplifier.