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:
Sep. 20, 2022
Filed:
Jan. 26, 2021
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
DELTA ELECTRONICS (SHANGHAI) CO., LTD., Shanghai, CN;
Abstract
The disclosure provides a multilevel port under-voltage protection circuit with flying capacitor, comprising: a first circuit unit having first to fourth power switches sequentially connected in series, wherein the first circuit unit is arranged a positive terminal and a negative terminal of a DC input port and each of the switches can tolerate a reverse current; a first flying capacitor having a first terminal connected to the common node of the first power switch and the second power switch in series, and a second terminal connected to the common node of the third power switch and the fourth power switch in series; and a first shunt element connected in antiparallel to the first power switch or the fourth power switch, wherein a pulse peak current tolerated by the first shunt element is greater than the reverse current tolerated by the first power switch or the fourth power switch.