PiezoDrive PD32 User manual

PD32 - 32 Channel Piezo Driver
Manual and Specifications
PiezoDrivePty.Ltd.
www.piezodrive.com

Contents
1Introduction...........................................................................................................................................3
2Warnings/Notes...................................................................................................................................3
3Specifications.........................................................................................................................................4
4OutputVoltageRange...........................................................................................................................5
4.1Groundloadconfigurations...........................................................................................................5
4.2Floatingloadconfiguration............................................................................................................6
5InputConnectionDiagram....................................................................................................................6
6OutputConnectionDiagram.................................................................................................................7
7OutputCurrent......................................................................................................................................8
8PowerBandwidth..................................................................................................................................8
9SmallSignalBandwidth.......................................................................................................................10
10OverloadProtection.........................................................................................................................11
11Enclosure..........................................................................................................................................11
12SignalAdaptors................................................................................................................................11
13Waranty...........................................................................................................................................11


1 Introduction
ThePD32isahigh‐bandwidth,low‐noiselinearamplifierfordrivingupto32piezoelectricactuators.The
voltagerangeisconfigurablefrom+50Vto+/‐140Vandincludesasymmetricvoltagerangessuchas‐20V
to+120V.ThePD32worksseamlesslywithcommonmulti‐channelDACcardsandprovidesexceptional
easeofuseandcompatibilitywithprogrammingtoolssuchasLabViewandSimulink.Thecompactsizeand
19‐inchrackcompatibilityprovidesacomprehensiveoff‐the‐shelfsolutionfordrivinghundredsor
thousandsofpiezoelectricactuators.
ThePD32isdesignedfordemandingapplicationssuchasAdaptiveOptics,AcousticBeamForming,
MaterialsTesting,Astronomy,Ultrasonics,andVibrationControl.Withanoutputcurrentof150mAper
channel,alargearrayofpiezoelectricactuatorscanbedrivensimultaneouslyathighfrequencies.Positive
andnegativehigh‐voltagebiasoutputsarealsoincludedforcompatibilitywithpiezoelectricbender
actuators.

CompatibleActuators
StackActuators60V,100V,120V,150V
PlatesandTubesupto+/‐140V
TwoWireBendersupto+/‐140V
ThreeWireBenders Upto140V,or+/‐75V

Eachchannelisindividuallyprotectedagainstshortcircuitandthermaloverload.Statusindicatorsonthe
frontpanelprovideindividualmonitoringofallchannels.Adigitalstatussignalandexternalshutdown
commandisalsoaccessiblefromtheinputconnectortoallowremotemonitoringandcontrol.Theinput
andoutputconnectorsareindustrystandard37PinD‐Subconnectorswhicharestraight‐forwardto
assemble.Adaptorsareavailableforindustrystandard32ChannelDACcards.
2 Warnings/Notes
Thisdeviceproduceshazardouspotentialsandshouldbeusedbysuitably
qualifiedpersonnelunderthesupervisionofanobserverwithappropriate
first‐aidtraining.Donotoperatethedevicewhenthereareexposed
conductors.


3 Specifications
UnipolarOutputBipolarOutput
OutputVoltage+50Vto+140V+/‐50Vto+/‐140V
PeakCurrent150mAperchannel 75mAperchannel
RMSCurrent106mAperchannel53mAperchannel
PowerBandwidth50kHz(120Vpp)50kHz(240Vpp)
SignalBandwidth120kHz120kHz
SlewRate19V/us38V/us
Gain15V/V30V/V
InputImpedance53kOhm6.25kOhm
InputOffset5mV5mV
LoadUnlimitedUnlimited
OutputNoise200uVRMS(1uFLoad)300uVRMS(1uFLoad)
ProtectionShort‐circuitandthermaloverload
Inputs32Analoginputs,shutdowncommand
Outputs32HVAnalogoutputs,overloadmonitor
ConnectorsIndustrystandard37PinFemaleD‐Sub
Mechanical
Environment‐40to60C(‐40to140F)
Non‐condensinghumidity
Dimensions212x304.8x88mm
Weight2kg


4 OutputVoltageRange
Theoutputvoltagerangeisconfigurablebetween+50Vand+/‐140Vandtheloadcanbeeithergrounded
orfloating.Forpeak‐to‐peakvoltageslessthan140V,thegroundedloadconfigurationisrecommended
sincethisprovidesgreatercurrent.Thefloatingloadconfigurationisrequiredforthe+/‐100Vand+/‐140V
ranges.Thedesiredconfigurationshouldbespecifiedatthetimeofordering.
4.1 Groundloadconfigurations
Inthegroundedloadconfigurations,theactuatorconnectionsareillustratedbelow.Thenegativeoutputis
internallygrounded.

Thedesiredoutputvoltagerangecanbeselectedfromthefollowingtable.

MinVoltageMaxVoltageOrderCode
0+140PD32‐140
0+120PD32‐120
0+100PD32‐100
0+70PD32‐70
0+50PD32‐50
 
‐20+120PD32‐20/120
‐20+100PD32‐20/100
 
‐72+72PD32‐72/72
‐48+48PD32‐48/48


Threewirebenderactuatorscanbedrivenusingthefollowingconnectiondiagram.TheHV+andHV‐bias
voltagesaretheminimumandmaximumvoltageslistedinthetableaboveandareaccessibleonthe
outputconnector.



15
+
Piezo1
Out1+
In1
Out1‐
15
Piezo1
Out1+
In1
HV+
HV‐

4.2 Floatingloadconfiguration
Thefloatingloadconfigurationisusefulforachievinghigherpeak‐to‐peakvoltageswings.Theconnection
diagramisillustratedbelow.Donotconnecteitherofthesesignalstoground,forexample,anoscilloscope
probe.



Thedesiredoutputvoltagerangecanbeselectedfromthefollowingtable.

MinVoltageMaxVoltageOrderCode
‐140+140PD32‐140/140
‐100+100PD32‐100/100
5 InputConnectionDiagram
ThefrontpanelinputconnectorisanindustrystandardDB37FemaleConnector(TE1658612‐1).AnyMale
DB37cableplugiscompatible.Theconnectiondiagramisillustratedbelow.


SignalsInputConnector Notes
AnalogInputs1to32Pins1to32+/‐10Vmax
DigitaldisablecommandPin363.3Vor5Vlogic
OverloadindicatorPin375Vlogic



30 +
Piezo1
Out1+
In1
Out1‐

6 OutputConnectionDiagram
ThefrontpaneloutputconnectorisanindustrystandardDB37FemaleConnector(TE1658612‐1).Any
MaleDB37cableplugiscompatible.Theconnectiondiagramisillustratedbelow.

SignalsConnector1Notes
Outputs1to16(Positive)Pins1to16
Outputs1to16(Negative)Pins20to35
HV+Pin17and18Fordrivingbenders
HV‐ Pin36and37Fordrivingbenders
SignalsDB37Connector Notes
Outputs17to32(Positive)Pins1to16
Outputs17to32(Negative)Pins20to35
HV+Pin17and18Fordrivingbenders
HV‐ Pin36and37Fordrivingbenders


7 OutputCurrent
Thepeakoutputcurrentis150mAperchannelinthegroundedloadconfigurationor75mAperchannelin
thefloatingloadconfiguration.ThemaximumRMScurrentis106mAinthegroundedconfigurationand53
mAinthefloatingloadconfiguration.
Themaximumsimultaneousoutputcurrentfromallchannelsis1.5A.
8 PowerBandwidth
Thenominalslew‐rateofthePD32inthegroundedloadconfigurationis19V/us.Therefore,theunloaded
maximumfrequencysine‐waveis

 19  10

󰇛󰇜
.
Thatis,thepowerbandwidthfora120Vp‐psine‐waveis50kHz.Inthefloatingloadconfiguration,the
slew‐rateisdoubledto38V/us,therefore,thepowerbandwidthfora240Vp‐psine‐waveis50kHz
Withacapacitiveload,thepowerbandwidthislimitedbytheoutputcurrent.Themaximumfrequency
sinewaveis

 

󰇛󰇜

whereisthepeakcurrentlimit,
󰇛󰇜isthepeak‐to‐peakoutputvoltage,andistheeffectiveload
capacitance.Thepowerbandwidthversusloadcapacitanceislistedbelow.
LoadPeaktoPeakVoltage(Grounded)
Cap.50100140
10nF95kHz47kHz34kHz
30nF31kHz15kHz11kHz
100nF9.5kHz4.7kHz3.4kHz
300nF3.1kHz1.5kHz1.1kHz
1uF950Hz470Hz340Hz
3uF310Hz150Hz114Hz
10uF96Hz48Hz34Hz
30uF32Hz16Hz11Hz
LoadPeaktoPeakVoltage(Floating)
Cap.100200280
10nF23kHz11kHz8.5kHz
30nF7.9kHz3.9kHz2.8kHz
100nF2.3kHz1.1kHz850Hz
300nF790Hz390Hz284Hz
1uF230Hz119Hz85Hz
3uF80Hz40Hz28Hz
10uF24Hz12Hz9Hz
30uF8Hz4Hz3Hz

Table1.PowerBandwidthversusLoadCapacitance(GroundedandFloatingLoadConfiguration)

Inthefollowingfigures,themaximumfrequencyperiodicsignalisplottedagainstthepeak‐to‐peak
voltage.



Figure1.Maximumfrequencyversusvoltageandcapacitance(GroundedLoad)
Figure2.Maximumfrequencyversusvoltageandcapacitance(FloatingLoad)

10
1
10
2
10
3
10
4
0
20
40
60
80
100
120
140
160
Frequency (Hz)
Peak to Peak Voltage (V)
10
1
10
2
10
3
10
4
0
50
100
150
200
250
300
Frequency (Hz)
Peak to Peak Voltage (V)
100nF
300nF
1uF3uF10uF30nF
100nF
300nF
1uF
3uF10nF
30nF

9 SmallSignalBandwidth
Thesmall‐signalbandwidthforarangeofcapacitiveloadsislistedbelow.Thesmall‐signalfrequency
responsesareplottedinFigure3.

Load
Capacitance
Signal
Bandwidth
NoLoad120kHz
10nF90kHz
30nF40kHz
100nF11kHz
300nF3.8kHz
1uF1.0kHz
3uF320Hz
10uF62Hz
30uF 24Hz

Table2.Smallsignalbandwidth(‐3dB)

Figure3.Smallsignalfrequencyresponse

10
2
10
3
10
4
10
5
0
10
20
30
Magnitude (dB)
10
2
10
3
10
4
10
5
-150
-100
-50
0
Phase (deg.)
Frequency (Hz)
100nF
300 nF1uF3uF10uF 30nF 10nF