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. 03, 2026
Filed:
Feb. 21, 2024
Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;
Jinxiang Zhan, Shanghai, CN;
Kai Gao, Shanghai, CN;
Juncan Wang, Shanghai, CN;
Yongbing Gao, Shanghai, CN;
Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;
Abstract
A power conversion device includes a positive direct current bus, a negative direct current bus, a first capacitor, a second capacitor, a first inductor, a first discharge unit. The first capacitor is connected between the positive direct current bus and the negative direct current bus. The second capacitor is connected in series to the first inductor and then connected in parallel to the first capacitor, where a capacitance value of the second capacitor is greater than a capacitance value of the first capacitor. The first discharge unit is connected in parallel to the first inductor, and is configured to be in a conducted state when a voltage of the first inductor is greater than a first action voltage threshold. In the embodiments, a case in which a semiconductor device in the power conversion device has a risk of voltage overstress caused by a differential mode lightning strike can be avoided.