High-Voltage Piezo Amplifier

Ideal for Capacitive Loads of 1 µF to 10 µF
High Output Voltages from -30 V to 150 V
High Peak Currents up to 10 A
For Use with Thorlabs Piezoelectric Devices

BPA100

CA3262

SHV Male to SHV Male Cable
(Not Included)

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Overview
Specs
Front & Back Panels
Pin Diagram
Feedback

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Click for Raw Data
Measured typical load response for the BPA100 Piezo Amplifier. Data was measured using a sinusoidal waveform.

Note: The BPA100 amplifier is recommended for Thorlabs' piezoelectric devices that have an operating voltage range of 0 V to 150 V or -30 V to 150 V. If using a piezo rated for a smaller voltage range than that of the amplifier (-30 V to 150 V), extreme care must be taken when adjusting the external source to ensure that the voltage does not exceed the piezo's rated values. Exceeding these will damage the piezo.

Features

Output Voltage Range: -30 V to 150 V
- Female SHV Connector
- SHV Cable (60") Available Separately
Fixed 15X Voltage Gain
10 A Peak Current, 2.5 A Continuous Current
Single-Channel Input (BNC): -2 V to 10 V
Monitor Output (BNC): -3 V to 15 V
Temperature Sensor for Overheat Protection
Voltage Overload Protection
Compatible with Thorlabs' Piezo Actuators and Adjusters with 150 V Maximum Drive Voltage

Our BPA100 High-Voltage Piezo Amplifier is a benchtop, open-loop amplifier suitable for use with many of Thorlabs' piezoelectric actuators, chips, and stacks. With a voltage gain of 15, this amplifier produces a maximum output voltage of +150 V, a continuous output current of 2.5 A (10 A peak), and low noise. The BPA100 amplifier is ideal for dynamic applications that require high, pulsed currents to rapidly charge and discharge high capacitance loads, such as liquid dispensing and vibration damping. See the graph to the right for details on the load response of this amplifier.

The low voltage input, a female BNC connector, is located on the front panel. This accepts -2 V to 10 V signal waveforms from external signal generators, computer controllers, or feedback networks. A second female BNC connector is provided for monitoring the output voltage and waveform. The monitor has a scaling of 10:1, so an output voltage of 150 V results in a 15 V monitor voltage.

To prevent internal damage during operation, the BPA100 amplifier features protection circuits that activate in the case of voltage overload or device overheating. These errors result in the illumination of the red ERROR and OVERLOAD LEDs on the front panel, respectively. Please see the manual for more information regarding these error conditions.

Connecting a Piezoelectric Device
The amplified voltage is output through a female safe high voltage (SHV) fitting on the rear panel for additional safety. In comparison to BNC connectors, SHV connectors include additional insulation and a recessed conducting pin to prevent accidental contact when unmated. They also feature a reversed gender interface to prevent mating with low voltage connectors; see the Pin Diagrams tab for details.

We recommend using the CA3262 SHV male to SHV male cable to connect the BPA100 amplifier to a piezo. This cable is not included with the unit and must be purchased separately. An SHV female to BNC male electrical adapter is available to support piezos with BNC connectors. Alternatively, we also offer an SHV female interface, which can be used to make an SHV output connection directly to the piezo. Please note that we do not advise using SHV to BNC electrical adapters on the rear panel of the BPA100 amplifier unit.

Specifications
Piezoelectric Output
Voltage Output Range	-30 V to 150 V DC
Voltage Gain	15
Output Current	2.5 A Continuous (AC RMS), 10 A Peak
Voltage Stability	100 ppm Over 24 hours (After 30 minutes Warm-Up Time)
Noise	<0.5 mV RMS (Bandwidth 20 Hz to 100 kHz)
Typical Piezo Capacitance	1 to 10 µF^a
Input
Input Type	Single Ended
Input Impedance	10 kΩ
Input Voltage Range	-2 V to 10 V DC
Input Voltage for Full Range	10 V DC ±2%
Monitor Output (BNC)
Output Voltage Range	-3 V to 15 V
Output Impedance	220 Ω
Minimum Recommended Load Impedance	10 kΩ
Short Circuit/Overload Protection	Yes
Temperature Sensor	Yes
Scaling Factor (HV Monitor)	1/10 (15 V for a Max Piezo Voltage of 150 V)
Input Power Requirements (IEC Connector)
Voltage	85 - 264 VAC
Supply Current	<2 A (Ignoring Power on Transient)
Protection	Internal Fuse, Qty. 2, T3. 15 A H 250 V Anti-Surge Ceramic
General
Dimensions	300.0 mm x 305.0 mm x 154.9 mm (11.81" x 12.01" x 6.10")
Weight	6.0 kg (12.12 lbs)
Operating Temperature Range	5 °C to 40 °C

The unit will drive loads with a capacitance outside the stated range; see the load response graph on the Overview tab for response data. Generally a lower capacitance will result in a flat response at higher frequency. For high capacitance loads, the response starts to fall off at lower frequencies.

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Back Panel

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Front Panel

Back Panel
Callout	Description
1	AC Power Switch
2	Fuse Tray
3	SHV Female Connector (-30 V to 150 V Output)
4	AC Power Cord Connector

Front Panel
Callout	Description
1	On/Off Green LED Indicator
2	Red LED, Error Indicator
3	Red LED, Overload Indicator
4	BNC Female Connector for Input Source, -2 V to 10 V
5	BNC Female Connector for Signal Monitoring, -3 V to 15 V

Input

BNC Female

Input Voltage: -2 V to 10 V

Monitor

BNC Female

Output Voltage: -3 V to 15 V
Scaling: 10:1

Output

SHV Female

Output Voltage: -30 V to 150 V
SHV connectors have reversed gender to BNC. An SHV female connector has the contact pin, which is indicated by the filled in black circle.

Posted Comments:

Likun Wang (posted 2023-10-10 13:32:02.697)

Hi, what is the slew rate of this amplifier?

do'neill (posted 2023-10-30 10:17:57.0)

Response from Daniel at Thorlabs. We do not have a slew rate for these amplifiers as it is dependent on the capacitive load you use. It is possible to calculate the slew rate for a given load as the maximum current of the BPA100 divided by the capacitance. I will reach out to you directly to discuss your application.

changshun xu (posted 2023-01-06 02:49:04.107)

这台设备能不能控制压电梁，这能产生一定频率的电压脉冲信号吗

DJayasuriya (posted 2023-01-20 08:48:12.0)

Thank you for your inquiry. The amplifier is capable of high peak current pulses, in return the high output voltage, can result in very high peak pulse power that can damage your piezo. We will get in touch with you directly to discuss you application.