Samsung Electro-mechanics Co., Ltd.

Solum Co., Ltd.

Gyu Min Park

Sang Gab Park

Nam Jin Park

Heung Gyoon Choi

Kwang Seung Cho

Hyo Joong An

Han Hee Lee

Embodiments of the invention provide a power supply including a transformer comprising a single output terminal on a secondary side, a first output unit comprising a first capacitor and connected to the single output terminal to output a first output voltage, a second output unit comprising a second capacitor having a larger capacity than the first capacitor and connected to the single output terminal to output a second output voltage, and a controller configured to control the first output voltage to be output until power is applied and charging of the second capacitor is started.

Power supply

The present invention provides a control circuit of an LLC resonant converter including a minimum switching frequency variable circuit of varying a minimum switching frequency corresponding to an AC input voltage of the LLC resonant converter; and a first pulse signal generating unit and a second pulse signal generating unit to generate a first pulse signal and a second pulse signal based on a switching frequency limited by the minimum switching frequency variable circuit.

Control circuit of LLC resonant converter and LLC resonant converter using the same

Growing community of inventors

Suwon-si, South Korea

Gyu Min Park