发明申请
US20100059023A1 Circuit Arrangement and Method for Operating an Inductive Load
审中-公开
用于操作感性负载的电路布置和方法
- 专利标题: Circuit Arrangement and Method for Operating an Inductive Load
- 专利标题(中): 用于操作感性负载的电路布置和方法
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申请号: US12522551申请日: 2008-01-02
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公开(公告)号: US20100059023A1公开(公告)日: 2010-03-11
- 发明人: Harald Schmauss , Walter Schrod
- 申请人: Harald Schmauss , Walter Schrod
- 申请人地址: DE Hanover
- 专利权人: CONTINENTAL AUTOMOTIVE GMBH
- 当前专利权人: CONTINENTAL AUTOMOTIVE GMBH
- 当前专利权人地址: DE Hanover
- 优先权: DE102007001414.9 20070109
- 国际申请: PCT/EP08/50009 WO 20080102
- 主分类号: F02M51/00
- IPC分类号: F02M51/00 ; H01H47/00
摘要:
A circuit arrangement for operating at least one inductive load, for example a solenoid of a fuel injection valve, is configured to feed back electrical energy into a storage capacitor in a freewheeling phase after driving the load. In order to avoid an unwanted voltage increase on the capacitor, the circuit arrangement includes a DC/DC converter with the output-side storage capacitor to provide an operating voltage for the load. A drivable circuit arrangement optionally connects the load to the capacitor, and a freewheeling diode arrangement feeds back electrical energy into the capacitor after the circuit arrangement has been switched off. A protection circuit, which is connected in parallel with the capacitor, provides a current path for limiting the charging voltage on the capacitor in the event of an excessively high voltage on the capacitor.
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