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 |
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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. |
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ISSN: | 0034-6748 1089-7623 |
DOI: | 10.1063/1.4969059 |