发明授权
- 专利标题: Load detection for switched-mode power converters
- 专利标题(中): 开关式电源转换器负载检测
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申请号: US13019490申请日: 2011-02-02
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公开(公告)号: US08638088B2公开(公告)日: 2014-01-28
- 发明人: Jun Honda , Jong-Deog Jeong
- 申请人: Jun Honda , Jong-Deog Jeong
- 申请人地址: US CA El Segundo
- 专利权人: International Rectifier Corporation
- 当前专利权人: International Rectifier Corporation
- 当前专利权人地址: US CA El Segundo
- 代理机构: Farjami & Farjami LLP
- 主分类号: G01R25/00
- IPC分类号: G01R25/00
摘要:
In one embodiment, a method for detecting a load in a switched-mode power converter is provided. The switched-mode power converter includes high and low-side power switches which are configured to be driven respectively by high and low-side drive signals to provide a switching voltage. The high and low-side drive signals include a plurality of dead-time periods. The method includes monitoring a waveform of the switching voltage and at least one of the high and low-side drive signals. The monitored waveform of the switching voltage is compared to the monitored waveform of the at least one of the high and low-side drive signals to determine whether the switching voltage is high or low during at least one of the dead-time periods. A current measurement of the load is determined based on whether the switching voltage is high or low during the at least one of the dead-time periods.
公开/授权文献
- US20120194170A1 Load Detection for Switched-Mode Power Converters 公开/授权日:2012-08-02
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