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  • DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision
  • DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision

FOUR-QUADRANT AND HIGH-SPEED BIPOLAR POWER SUPPLY

Built-in Function Generator

  • Voltage range: ±5V to ±300V
  • Current: ±1A to ±120A
  • Power:
    150W to 2000W
  • Frequency bandwidth:
    DC to 30kHz

More user-friendly and convenient.

DOPF series is a four-quadrant and high-speed bipolar amplifier with a built-in function generator, which improves the operations.

Any waveform can be programmed easily on the front panel, and necessary functions are all available in terms of sequence, measurement, memory setting, and protection besides waveform.
Moreover, equipped with the control signal output of parallel operation as standard, the full synchronized operation is achieved even with high speed. DOPF series integrated with the signal generator in four quadrants offers variations in experiments and evaluation tests.

FEATURES AND BENEFITS

  • DOPF series which is a four-quadrant high-speed bipolar power supply is now available with an integrated function generator.
  • Waveform with less distortion by DDS method (DC to 30 kHz sin wave, rectangular wave, and triangular wave)
  • DC and AC output can be programmed individually, which makes the unit user-friendly with its simple operation.
  • External control is available with communication options (USB, LAN, RS-232C, RS-485, and GPIB).
  • LCD display uses high contrast white LED backlight for high visibility.
  • Waveform generation, sequence operation, various measurements on a single power supply
  • All settings and operations are realized only by operation on the front panel
  • Available for expanding to 6kW with master/slave connection

Operation range

Output range

APPLICATIONS

  • Driving capacitive loads (capacitors)
  • Biasing inductive loads (coils, transformers, etc.)
  • Motor testing
  • Solar inverter (PV inverter)
  • Evaluation test for solar panel related devices

Note: This product is not designed for charge and discharge of battery.
For battery charging and discharging applications, please refer to the Battery Cycle Tester product page.

Models

Model Maximum output
Voltage Current Power
DOPF5-30 ±5 V ±30 A 150 W
DOPF5-60 ±60 A 300 W
DOPF6-120 ±6 V ±120 A 720 W
DOPF10-15 ±10 V ±15 A 150 W
DOPF10-30 ±30 A 300 W
DOPF10-60 ±60 A 600 W
DOPF20-7.5 ±20 V ±7.5 A 150 W
DOPF20-15 ±15 A 300 W
DOPF20-30 ±30 A 600 W
DOPF20-60 ±60 A 1200 W
DOPF20-100 ±100 A 2000 W
DOPF25-6 ±25 V ±6 A 150 W
DOPF25-12 ±12 A 300 W
DOPF25-24 ±24 A 600 W
DOPF25-48 ±48 A 1200 W
DOPF25-80 ±80 A 2000 W
DOPF30-40 ±30 A ±40 1200 W
DOPF45-3.3 ±45 V ±3.3 A 150 W
DOPF45-6.6 ±6.6 A 300 W
DOPF45-13.3 ±13.3 A 600 W
DOPF45-16 ±16 A 720 W
DOPF45-26.7 ±26.7 A 1200 W
DOPF45-44.4 ±44.4 A 2000 W
DOPF60-2.5 ±60 V ±2.5 A 150 W
DOPF60-5 ±5 A 300 W
DOPF60-10 ±10 A 600 W
DOPF60-20 ±20 A 1200 W
DOPF60-33.3 ±33.3 A 2000 W
DOPF70-17 ±70 V ±17 A 1200 W
DOPF80-25 ±80 V ±25 A 2000 W
DOPF120-2.5 ±120 V ±2.5 A 300 W
DOPF120-5 ±5 A 600 W
DOPF120-10 ±10 A 1200 W
DOPF150-2 ±150 V ±2 A 300 W
DOPF150-4 ±4 A 600 W
DOPF150-8 ±8 A 1200 W
DOPF200-1.5 ±200 V ±1.5 A 300 W
DOPF200-1.75 ±1.75 A 350 W
DOPF200-3 ±3 A 600 W
DOPF200-3.5 ±3.5 A 700 W
DOPF200-6 ±6 A 1200 W
DOPF300-1 ±300 V ±1 A 300 W
DOPF300-2 ±2 A 600 W
DOPF300-4 ±4 A 1200 W

Functions

Fundamental waveform generated function

The DOPF is equipped with a built-in function generator that produces sine, rectangular, and triangle waves. The frequency range can be set between 0.01 Hz and 20 kHz (30 kHz is available for some models). In addition, the easy adjustments of amplitude, start phase (sine wave), on-phase control (sine wave), and duty cycle (rectangular wave, triangular wave) are possible, making it very convenient for a variety of evaluation tests and applications.

Start phase (90 deg) Initial phase | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision
On-phase control (+90 deg) Switching phase | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision
On-phase control (-180 deg) Cutoff phase | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision

Applications: Power-on test, rush current measurement, wave fluctuation test, etc.

Sequence functions

DOPF is equipped with a sequence function that can program step length, step amplitude, ramp, CV/CC mode, sequence-ending setting, AC superposition, step jump, number of jumps, etc. Any desired waveform can be generated making it useful for various experiments, evaluation, and validation applications.

If amplifier’s output turns off while it is running a sequence program halfway through, the leftover sequence will not run but it is re-activated from the beginning of the original sequence.

  • Step time: 10 ms to 1999 s 999 ms (resolution: 1 ms), Ramp and AC waveform is 50 ms
  • Up to 16 steps per program and setting for 3 programs can saved
  • Can be set CV/CC mode per program
  • Frequency: Infinite, 1 to 999
Program image
Program image | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision

Complicated waveforms such as below can be easily generated just by using the sequence function.

Pulse current variation Pulse current variation | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision
Ripple current superposition Ripple current superposition | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision
AC voltage/frequency variation AC voltage/frequency variation | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision
DC voltage interruption DC voltage interruption | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision

Applications: motor testing, pulse power supplies, or various evaluation equipment, etc.

Measurement functions

DOPF is equipped with measurement functions that measure DC value, AC RMS value, Max value, and Min. value. Thus wide frequency ranges, DC to 20 kHz, can be measured automatically, and it is easy to change the setting depending on application.
Besides, there is no need to choose options, and it is easy to change the setting depending on the application.

(Example) measures AC waveform

Measurement functions1 | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision

(Example) measures DC + AC waveform

Measurement functions2 | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision

Memory function

DOPF is equipped with both preset and set-up memory.
During fundamental wave operation, output voltage (at CV mode), Output current (at CC mode), CV/CC setting, and waveform setting can be saved to 10 set-up memories. Also, sequence programs can be saved in up to 3 programs, which is useful for operations regarding multiple waveforms more often-used or sequence functions. Data changes can be saved and data called out very easily.

DOPF is also equipped with a Protection function, Key-lock function, and CV/CC crossover, as standard.

Specifications

For details, download the datasheet below.

Options

-LD

Interlock

-LEt *

LAN interface port

Enable digital control via LAN

Control items

Output ON/OFF, Voltage/Current setting (AC and DC), Switch of constant voltage/constant current, Frequency setting, Waveform setting (sine wave, square wave, and triangular wave), phase setting (sine wave), Duty setting (square wave and triangular wave)

-LF

Floating ground (withstanding voltage of 200 Vdc)

The negative terminal of the output can be floatable up to 200 V. However, please take note that the external control signal source (such as a function wave generator) and the common measuring device that connects to the amplifier is the monitor terminal will also become floating potential in this case.
-LGob *

Optical interface port

With optical communication, isolation control is performed. As complete isolation is performed by means of optical fiber, this enables advance prevention of erroneous operation involved with transient phenomenon caused by surges, inductive lightning, external noise, etc.
To use the optical interface, you need to prepare an optical interface adapter separately.

[Control items] Output ON/OFF, Voltage/Current setting (AC and DC), Switch of constant voltage/constant current, Frequency setting, Waveform setting (sine wave, square wave, and triangular wave), Phase setting (sine wave), Duty setting (square wave and triangular wave) (The converters are required sold separately. Please contact our sales staff for details.)

  • -LGob: Optical interface port + optical cable 2 meters
  • -LGob(Fc5): Optical interface port + optical cable 5 meters
  • -LGob(Fc10): Optical interface port + optical cable 10 meters
  • -LGob(Fc20): Optical interface port + optical cable 20 meters
  • -LGob(Fc40): Optical interface port + optical cable 40 meters

Select the optional optical interface port (-LGob) when using this DC power supply under the following conditions.

  • Noisy environments such as factries (example: when motors or coils are used nearloads or power sources).
  • If this power supply and your controller (PC or PLC) cannot be installed within 2 meters.
  • When there is a possibility of arcing or output short-circuit.
-LMsm, -LMss

Master/Slave control

"-LMsm" for Master unit, or "-LMss" for slave unit Maximum 2 slave units can be connected to the master unit. As the master and slave units individually adopt the dedicated settings, the switching of the two units is not allowed. When you control the master/slave operation via the USB communication while using the option in combination with -LUs1option, make sure that the master unit should select -LUs1 option only. As for the slave unit, -LUs1 option is unnecessary. On the other hand, however, if you use USB communication to control the slave unit only, -LUs1 option is required in the slave unit.
-LS

External output ON/OFF

-LUs1 *

USB interface port

Digital control via USB
[Control items]
Output ON/OFF, Voltage/Current setting (AC and DC), Switch of constant voltage/constant current, Frequency setting, Waveform setting (sine wave, square wave, and triangular wave), Phase setting (sine wave), Duty setting (square wave and triangular wave)
-L(220V)

Change of input voltage

200 Vac to 240 Vac ±10% single phase, 50/60 Hz input (150 W, 300 W, and 350 W models only)

* These options cannot be selected together.

How to Order

When ordering, add option No. to Model No. (Alphabetical and input voltage order)
Example:
DOPF60-20-LDFMsmSUs1, DOPF20-15-LDFGob(How to order Fc10)MssS(220V)

Accessory

Interface adapters

To use the optical interface, you need to prepare an optical interface adapter separately. The following interface adapters are available according to your controller port.

  • CO-E32: LAN to optical interface adapter
  • USB-OPT: USB to optical interface adapter
  • CO-OPT2-9: RS-232C (9 pin) to optical interface adapter
  • CO-OPT2-25: RS-232C (25 pin) to optical interface adapter
  • CO-OPT4-25: RS-485 (25 pin) to optical interface adapter
  • CO-G32: GPIB to optical interface adapter (Discontinued in December 2028)
Example of communication with optical fiber
Example of communication with optical fiber | DOPF series | Bipolar power supply (Low Voltage Amplifiers) | Matsusada Precision
For details, refer to CO/USB series.

Dimensions

For details, download the datasheet below.

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