Micromechatronics, Inc. (MMech)

www.mmech.com - Ph: 814-861-5688

PDm200 Miniature High Voltage Amplifier

Piezoelectric Drivers

THIS AMPLIFIER IS OUT OF STOCK - SEE PDm200B

Piezodrive_PDm200_medium

pdf-icon_sm PDm200 Specifications

keypad_sm Calculate Power Bandwidth

Specifications:

PDm200 Specifications
 Power Supply +/-12 V to +34 V
 Max. Unipolar Output -30 V to 200 V
 Max. Bipolar Output +/-200 V (+/- 400 V bridge mode)
 Av. Output Current 46 mA (+/-100 V Output)
 Power Bandwidth 63 kHz (3.9 nF load, 100 Vp-p)
 Peak Output Current 300 mA
 Signal Bandwidth 200 kHz (unloaded)
 Slew Rate 20 V/us
  Dimensions 71 x 38 mm
 Weight 50 g
 Gain 20 V/V
 Input Impedance 200 kohm
 Input Offset
+/- 10 mV
 Load 3.9 nF to 100 uF
 Overload Thermal and current overload protection
 Noise < 1 mV RMS (1uF Load)
 Environment -40 to 60 Celsius (-40 to 140 F)
Non-condensing humidity
 Quiescent Current 100 mA (7.5 mA in Shutdown)

Features

The PDm200 is a complete high-performance power supply and linear amplifier module for driving piezoelectric actuators. The output voltage range can be switched between bipolar or unipolar modes with a range of 100V, 150V, or 00V. Up to 400 V can be achieved in the bridged configuration. In the unipolar mode, the negative output range is fixed at -30V for use with stack actuators.

Compatible Actuators

The PDm200 can drive stack actuators; standard piezoelectric actuators; two wire benders; and three-wire piezoelectric benders requiring a 200V bias voltage. The PDm200 is suited to a wide range of applications including: Electro-optics, ultrasound, vibration control, nanopositioning systems, and piezoelectric motors. The PDm200 is protected against current overload and excessive temperature. The PDm200 can be used as a stand-alone module or mounted to a base with four M2.5 threaded spacers. The PCB mounting version (PDm200-PCB) is supplied with headers for direct mounting on a host motherboard.

Compatible Actuators
Stack Actuators 100V, 120V, 150V, 200V
Plates and Tubes
up to +/- 200V
Two Wire Benders
up to +/- 200V
Three Wire Benders
0 to 200V with 200 V bias
+/-100V with +/-100V bias

Configuration

The PDm200 is configurable to suit a wide range of power supply and output voltage ranges. The output voltage range is selected by a two jumpers marked L1 and L2, each of which has four possible positions marked by the letters a to d and e to h. In unipolar output mode, the negative output range is fixed at -30 V and the jumper L2 is always in the ‘E’ position. The correct position for the L1 jumper is listed below for different power supply voltages.

Output Voltage
Power Supply Voltage
Pos.
Neg. +/-12 to +/-14V
+/-15 to +/-17V +24V* to 30V +30V* to 34V
200V -30V
D D
150V -30V
D C D C
120V -30V C B C B
100V -30V
B A B A

*With a single supply, the negative output voltage range is reduced from -30 V to -20 V.

In bipolar output mode, the correct positions for the L1 and L2 jumpers are listed in below in Table 2. In the 200 V mode, a 330 ohm resistor is recommended in series with the output. See the section on “Stability” for more details.

Output Voltage
Power Supply Voltage
Pos. Neg. +/-12 to +/-14V
+/-15 to +/-17V +24V to 30V +30V to 34V
200V -200V
D,H D,H
150V -150V
D,H C,G D,H C,G
100V -100V
B,F A,F B,F A,F

 Application Examples

PDm200_Ex_Application

Output Current

The PDm200 calculator can be used to estimate the maximum input and output current for a given supply voltage and output voltage range. Some common values are tabulated below.

Voltage Range Average Output Current for +/-15V supply
-30V to +150V 53 mA
-30V to +200V
39 mA
-100V to +100V
46 mA
-200V to +200V
18 mA

Stability

In the +/-200 V range, oscillation can occur with some load capacitances when the output voltage is very close to the negative rail ( -190V). This problem can be eliminated by placing a 220 Ohm resistor in series with the load capacitance as shown in the example applications. Alternatively, a 330pF 25V 0603 capacitor can be soldered on top of R14 which reduces the bandwidth to approximately 3 kHz and will avoid oscillation. This capacitor can be installed before delivery if necessary. Note that PDm200 modules produced before July 2014 required a minimum load capacitance of 3.9 nF for stability. After July, 2014, this load capacitance was included on the PCB (C33). However, it can be removed in applications that require maximum performance with load capacitances in the 5 nF to 30 nF range. If the capacitor is removed, the cable length and inductance should be minimized to avoid oscillation.In the +/-200 V range, oscillation can occur with some load capacitances when the output voltage is very close to the negative rail ( -190V). This problem can be eliminated by placing a 220 Ohm resistor in series with the load capacitance as shown in the example applications. Alternatively, a 330pF 25V 0603 capacitor can be soldered on top of R14 which reduces the bandwidth to approximately 3 kHz and will avoid oscillation. This capacitor can be installed before delivery if necessary.

Note that PDm200 modules produced before July 2014 required a minimum load capacitance of 3.9 nF for stability. After July, 2014, this load capacitance was included on the PCB (C33). However, it can be removed in applications that require maximum performance with load capacitances in the 5 nF to 30 nF range. If the capacitor is removed, the cable length and inductance should be minimized to avoid oscillation.

How to order

Request a quote for this product by sending an e-mail through "Request for Quote" referencing the  part number or by calling us at 814-861-5688 (8:30am to 5:30pm EST).

How to order

Request a quote for this product by sending an e-mail through "Request for Quote" referencing the  part number or by calling us at 814-861-5688 (8:30am to 5:30pm EST).

PDm200 Connector Options

The connector options available for the PDm200 are shown below.

Connector Options
Part No. Connector Type
Piezodrive_PDm200_conn_sm2
PDm200
The PDm200 standard unit is supplied with terminal block connectors for the connection of wires.
PDm200-PCB_Top_Sm2
PDm200-PCB
The PDm200-PCB replaces the terminal block connectors with header pins for direct mount onto a PCB.
PDm200-ND_Sm2
PDm200-NC
The PDm200-NC leaves the vias in the PCB open to facilitate customer installation of a connector with 3.5mm pitch.

More Information

200 Innovation Blvd. Suite 155
State College, PA 16803, USA
Ph: (814)-861-5688
Fax: (814)-861-1418
contact@mmech.com
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