发明授权
- 专利标题: DC/DC converter, power converter and control method thereof
- 专利标题(中): DC / DC转换器,功率转换器及其控制方法
-
申请号: US13427450申请日: 2012-03-22
-
公开(公告)号: US09236807B2公开(公告)日: 2016-01-12
- 发明人: Hong-Yuan Jin , Pei-Qing Hu , Hong-Jian Gan , Jian-Ping Ying
- 申请人: Hong-Yuan Jin , Pei-Qing Hu , Hong-Jian Gan , Jian-Ping Ying
- 申请人地址: CN Shanghai
- 专利权人: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- 当前专利权人: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
- 当前专利权人地址: CN Shanghai
- 代理机构: CKC & Partners Co., Ltd.
- 主分类号: H02M3/335
- IPC分类号: H02M3/335 ; H02M1/00
摘要:
A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into at least one rectangular wave. The resonant tank provides a first voltage based on the rectangular wave for the output circuit. The detection unit detects a signal related to a state of the load. When the state of the load is light-load or a no-load, the control unit controls a working frequency or a duty ratio of the rectangular wave, so that the duty ratio of the rectangular wave is within a predetermined range, in which a voltage gain of the DC/DC converter is greater than another voltage gain under the condition of 50% duty ratio.