发明名称 |
Power factor correction circuit |
摘要 |
There is provided a power factor correction circuit including: a power conversion circuit unit controlling an inductor current according to a switching signal applied to a main switch to convert an external input voltage into an output voltage having a predetermined range; an imbalance detection circuit outputting an imbalance state signal when the external input voltage is in an unbalanced state by using the inductor current; and a soft start circuit unit performing soft starting by adjusting the switching signal when the imbalance state signal is output by the imbalance detection circuit unit. |
申请公布号 |
US9225235(B2) |
申请公布日期 |
2015.12.29 |
申请号 |
US201313892013 |
申请日期 |
2013.05.10 |
申请人 |
SAMSUNG ELECTRO-MECHANICS CO., LTD.;UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION |
发明人 |
Jang Yu Jin;Cho Hwan;Roh Yong Seong;Moon Young Jin;Park Jeong Pyo;Yoo Chang Sik;Yang Jeong Mo;Choi Joong Ho |
分类号 |
H02M1/36;H02M1/42;H02M1/00 |
主分类号 |
H02M1/36 |
代理机构 |
McDermott Will & Emery LLP |
代理人 |
McDermott Will & Emery LLP |
主权项 |
1. A power factor correction circuit comprising:
a power conversion circuit unit controlling an inductor current according to a switching signal applied to a main switch to convert an external input voltage into an output voltage having a predetermined range; an imbalance detection circuit outputting an imbalance state signal when the external input voltage is in an unbalanced state by using the inductor current, wherein when a level of the inductor current is equal to or lower than a pre-set level and an ON time of the switching signal is equal to or longer than a pre-set duration, the imbalance detection circuit unit determines that the external input voltage is in the unbalanced state; and a soft start circuit unit performing soft starting by adjusting the switching signal when the imbalance state signal is output by the imbalance detection circuit unit. |
地址 |
Suwon-Si, Gyeonggi-Do KR |