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
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申请号: US13427386申请日: 2012-03-22
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公开(公告)号: US08923019B2公开(公告)日: 2014-12-30
- 发明人: Pei-Qing Hu , Hong-Yuan Jin , Hong-Jian Gan , Jian-Ping Ying
- 申请人: Pei-Qing Hu , Hong-Yuan Jin , 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, wherein 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 driving pulses. The resonant tank provides a first voltage based on the driving pulses for the output circuit. The detection unit detects a signal related to a state of the load. When the state of the load is a light-load or a no-load, the control unit controls the rectangular wave generator in a hiccup mode to reduce a ratio of a work period to a stop period, or makes that number of the driving pulses within the current work period is less than the number of the driving pulses when a duty ratio is 50%.