An ultra-low noise, high-voltage piezo-driver

We present an ultra-low noise, high-voltage driver suited for use with piezoelectric actuators and other low-current applications. The architecture uses a flyback switching regulator to generate up to 250 V in our current design, with an output of 1 kV or more possible with small modifications. A hi...

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Veröffentlicht in:Review of scientific instruments 2016-12, Vol.87 (12), p.124702-124702
Hauptverfasser: Pisenti, N. C., Restelli, A., Reschovsky, B. J., Barker, D. S., Campbell, G. K.
Format: Artikel
Sprache:eng
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Zusammenfassung:We present an ultra-low noise, high-voltage driver suited for use with piezoelectric actuators and other low-current applications. The architecture uses a flyback switching regulator to generate up to 250 V in our current design, with an output of 1 kV or more possible with small modifications. A high slew-rate op-amp suppresses the residual switching noise, yielding a total root-mean-square noise of ≈100 μV (1 Hz–100 kHz). A low-voltage (±10 V), high bandwidth signal can be summed with unity gain directly onto the output, making the driver well-suited for closed-loop feedback applications. Digital control enables both repeatable setpoints and sophisticated control logic, and the circuit consumes less than 150 mA at ±15 V.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4969059