发明申请
- 专利标题： DETERMINING OUTPUT VOLTAGE OR CURRENT IN AN SMPS
- 专利标题（中）： 确定SMPS中的输出电压或电流
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申请号： US12373962申请日： 2007-07-12
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公开(公告)号： US20090309573A1公开(公告)日： 2009-12-17
- 发明人: Peter Lurkens , Christian Hattrup , Thomas Scheel
- 申请人： Peter Lurkens , Christian Hattrup , Thomas Scheel
- 申请人地址： NL Eindhoven
- 专利权人： KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人： KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人地址： NL Eindhoven
- 优先权： EP06117640.0 20060721; EP07111926.7 20070706
- 国际申请： PCT/IB07/52779 WO 20070712
- 主分类号： G01R19/00
- IPC分类号： G01R19/00
摘要：
An apparatus and method for determining an output voltage or output current in an SMPS circuit 10 are described. The SMPS circuit comprises a switching element 18 which in operation is switched according to consecutive switching cycles. An electrical value IL within the SMPS circuit 10 is compared to a reference value Iref. The electrical value IL varies within the switching cycle such that is equal to the reference value at least once during each cycle. The comparator signal comp is evaluated to determine timing information t of an instant of change in the signal. The timing information t is used for determining the output voltage Vout,Av or output current Iout,Av.
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