Invention Grant
- Patent Title: Driver circuit and method for controlling a capacitive element
- Patent Title (中): 用于控制电容元件的驱动电路和方法
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Application No.: US13108308Application Date: 2011-05-16
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Publication No.: US09048757B2Publication Date: 2015-06-02
- Inventor: Göran Cewers
- Applicant: Göran Cewers
- Applicant Address: SE Sundbyberg
- Assignee: MINDRAY MEDICAL SWEDEN AB
- Current Assignee: MINDRAY MEDICAL SWEDEN AB
- Current Assignee Address: SE Sundbyberg
- Agency: Stoel Rives LLP
- Agent Kory D. Christensen
- Main IPC: H02N2/00
- IPC: H02N2/00
Abstract:
The disclosure pertains to a method of charging or discharging a capacitive element, such as a piezoelectric crystal. The disclosure also pertains to a device that 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.
Public/Granted literature
- US20110285330A1 DRIVER CIRCUIT AND METHOD FOR CONTROLLING A CAPACITIVE ELEMENT Public/Granted day:2011-11-24
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