- 专利标题: Power controllers and control methods for PFC converter
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申请号: US16725621申请日: 2019-12-23
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公开(公告)号: US10965210B2公开(公告)日: 2021-03-30
- 发明人: Yao-Tsung Chen , Kuan-Hsien Chou
- 申请人: Leadtrend Technology Corporation
- 申请人地址: TW Zhubei
- 专利权人: Leadtrend Technology Corporation
- 当前专利权人: Leadtrend Technology Corporation
- 当前专利权人地址: TW Zhubei
- 代理机构: McClure, Qualey & Rodack, LLP
- 优先权: TW108105845 20190221
- 主分类号: H02M1/42
- IPC分类号: H02M1/42 ; H02M3/156
摘要:
A power controller for use in a PFC power converter is capable being immune from audible noise during the test of load transient response. A transconductor with a transconductance compares an output voltage of the PFC power converter with a target voltage to provide a compensation current, which builds up a compensation voltage. An ON-time controller is configured to end an ON time of a power switch in response to the compensation voltage. An OFF-time controller is configured to end an OFF time of the power switch. A compensation-voltage designator presets the compensation voltage. A status detector controls the transconductor, the ON-time controller, the OFF-time controller, and the compensation-voltage designator, in response to the output voltage, a top-boundary voltage and a bottom-boundary voltage.
公开/授权文献
- US20200274441A1 POWER CONTROLLERS AND CONTROL METHODS FOR PFC CONVERTER 公开/授权日:2020-08-27