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:
Jan. 30, 2024
Filed:
Nov. 22, 2021
Hyundai Mobis Co., Ltd., Seoul, KR;
Ji Hoon Park, Suwon-si, KR;
Deok Kwan Choi, Yongin-si, KR;
Won Gon Kim, Yongin-si, KR;
Kang Min Kim, Seoul, KR;
Min Heo, Seongnam-si, KR;
Tae Ho Bang, Seoul, KR;
Du Ho Kim, Yongin-si, KR;
Hyun Woo Shim, Suwon-si, KR;
Soo Min Jeon, Yongin-si, KR;
A Ra Lee, Seongnam-si, KR;
Hyundai Mobis Co., Ltd., Seoul, KR;
Abstract
A low-voltage DC-DC converter (LDC) includes: an N-phase power circuit configured by connection of N DC-DC converters in parallel between a high-voltage (HV) battery and a low-voltage (LV) battery; and one output capacitor commonly connected to an output of each phase DC-DC converter. Each phase of the N-phase power circuit is controlled in an interleaving manner which delays a phase by 360°/N. Here, each N-phase power circuit is controlled by switching at a frequency of [(a frequency at which the parasitic resistance (equivalent series resistance (ESR)) of the output capacitor is minimized)/N]. The parasitic resistance of the output capacitor of the LDC can be minimized. Accordingly, a lifespan of a battery can be improved and efficiency of the DC-DC converter can be increased through the reduction of the equivalent series resistance (ESR) of the output capacitor.