Solum Co., Ltd.

Korea Aerospace Research Institute

Sang-kyoo Han

Sang-keun Ji

Heung-gyoon Choi

Dong-kyun Ryu

Cheol-wan Park

Ji Hun Bae

Jae Dong Choi

Ja-Chun Koo

Jung Un Park

Hyun-su Gu

Nayoung Lee

Hyo-hun Kim

Heung-Gyoon Choi

According to the present invention, an output inductor, rather than being composed of a separate inductor element, is magnetically coupled to a third inductor and a fourth inductor constituting a second transformer. Thus, compared to the case in which the output inductor is composed of the separate inductor element independently of the third inductor and the fourth inductor, the cost as well as the volume of the DC-DC conversion device can be reduced.

DC-DC conversion device having coupling inductor

A transformer and an LLC resonant converter are provided. The transformer includes first and second cores configured to include a pair of outer foots and a middle foot positioned between the outer foots, and to induce a magnetic field formation; first and second inductor winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the first core, and to be connected in series with each other; and first and second transformer winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the second core, wherein the pair of outer foots of the first core face the pair of outer foots of the second core, the middle foot of the first core faces the middle foot of the second core, and the first core and the second core are disposed to be spaced apart from each other.

Transformer and LLC resonant converter having the same

An LLC resonant converter and an electronic device are provided. The LLC resonant converter according to the present disclosure includes a multi input transformer, first and second converter units connected to a primary side of the multi input transformer, an input voltage part, a first balance capacitor, and an output part connected to a secondary side of the multi input transformer.

LLC resonant converter and electronic device

Growing community of inventors

Daejeon, South Korea

Sang-kyoo Han