发明公开
- 专利标题： DRIVER CIRCUIT AND METHOD FOR CONTROLLING A CAPACITIVE ELEMENT
- 专利标题（中）： 驱动电路和一种用于控制电容元件
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申请号： EP11721479.1申请日： 2011-05-15
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公开(公告)号： EP2572444A2公开(公告)日： 2013-03-27
- 发明人: CEWERS, Göran
- 申请人： Mindray Medical Sweden AB
- 申请人地址： Rissneleden 136 174 57 Sundbyberg SE
- 专利权人： Mindray Medical Sweden AB
- 当前专利权人： Mindray Medical Sweden AB
- 当前专利权人地址： Rissneleden 136 174 57 Sundbyberg SE
- 代理机构： KIPA AB
- 优先权： US201061345764P 20100518; SE1050485 20100517
- 国际公布： WO2011144542 20111124
- 主分类号： H02M3/335
- IPC分类号： H02M3/335
摘要：
The invention pertains to a method of charging or discharging a capacitive element, preferably a piezoelectric crystal. The invention pertains also to a device which implements charging of a capacitive element according to said method. The device comprises a bipolar buck-boost converter, whereby a capacitive element can be charged with both positive and negative voltages. The discharge of the capacitive element is provided with energy recovery and feedback to the device's power supply.
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