Soft starting driver for piezoelectric device
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United States of America Patent
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-
Jul 31, 2012
Grant Date -
Apr 7, 2011
app pub date -
Oct 5, 2009
filing date -
Oct 5, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A driver includes a boost converter, a pulse width modulator controlling the boost converter, and a timer controlling the pulse width modulator. The timer, such as a digital counter, causes the pulse width modulator to produce narrow pulses unless or until the end of a period is reached, at which point the pulse width modulator is not controlled by the timer.
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