• U3_U6_U10 series | High Voltage power supply Module (Chassis Mount) | Matsusada Precision
  • U3_U6_U10 series | High Voltage power supply Module (Chassis Mount) | Matsusada Precision

Input/Output Proportional High Voltage Power Supply

Well-shielded compact module

  • Max Voltage: 0.3kV to 25kV
  • Max Current: 0.1mA to 20mA
  • Ultra-compact
  • Light-weight

Suitable for PMT, MCP, and radiation counter applications

The input/output proportional module is an embedded High Voltage module designed for OEM applications. It is ideal for applications with small load regulation such as photomultiplier tubes (PMTs), MCPs, and radiation detectors. In addition, models below 6 kV featuring the voltage isolation between the primary and secondary sides are available for floating applications. With the output up to 25 kV/10 W, "high performance" as well as "general purpose" depending on the performance of the ripple value, we provide you with the most suitable models in a wide lineup for your needs.

Features

  • Ultra compact, light weight, and Input/Output proportional
  • Low noise
  • High reliability
  • Input/Output isolated (models up to 6 kV)
  • Detachable input connector (Models except for case of C1)
  • Aluminum case (Models except for case of C1)

Applications

Models

U3 series (3 watts)

Reversible polarity
Model Output Minimum Load Ripple I/O Isolation * [Vdc]
Voltage Current
U3-0.3PN +0.02 to +0.3/-0.02 to -0.3 kV 10 mA 0.03 MΩ 0.12 %p-p 2000 V
U3-0.6PN +0.04 to +0.6/-0.04 to -0.6 kV 5 mA 0.12 MΩ
U3-1.1PN +0.1 to +1.1/-0.1 to -1.1 kV 2.75 mA 0.4 MΩ
U3-1.5PN +0.1 to +1.5/-0.1 to -1.5 kV 2 mA 0.75 MΩ
U3A-2PN +0.2 to +2/-0.2 to -2 kV 1.5 mA 1.3 MΩ 2500 V
U3A-3PN +0.2 to +3/-0.2 to -3 kV 1 mA 3 MΩ 3500 V
U3A-6PN +0.4 to +6/-0.4 to -6 kV 0.5 mA 12 MΩ 0.15 %p-p 7000 V
Positive polarity
Model Output Minimum Load Ripple I/O Isolation * [Vdc]
Voltage Current
U3A-10P 0.8 to 10 kV 0.25 mA 40 MΩ 0.05 %p-p -
U3A-15P 1.2 to 15 kV 0.2 mA 75 MΩ
U3A-25P 2 to 25 kV 0.1 mA 250 MΩ
Negative polarity
Model Output Minimum Load Ripple I/O Isolation * [Vdc]
Voltage Current
U3A-10N -0.8 to -10 kV 0.25 mA 40 MΩ 0.05 %p-p -
U3A-15N -1.2 to -15 kV 0.2 mA 75 MΩ
U3A-25N -2 to -25 kV 0.1 mA 250 MΩ

* I/O Isolation: The withstand voltage is the voltage value including the output voltage too.

U6 series (6 watts)

Reversible polarity
Model Output Minimum Load Ripple I/O Isolation * [Vdc]
Voltage Current
U6A-0.3PN +0.03 to +0.3/-0.03 to -0.3 kV 20 mA 0.015 MΩ 0.15 %p-p 2000 V
U6A-0.6PN +0.05 to +0.6/-0.05 to -0.6 kV 10 mA 0.06 MΩ
U6A-1.1PN +0.1 to +1.1/-0.1 to -1.1 kV 5.5 mA 0.2 MΩ
U6A-1.5PN +0.1 to +1.5/-0.1 to -1.5 kV 4 mA 0.38 MΩ
U6A-2PN +0.2 to +2/-0.2 to -2 kV 3 mA 0.65 MΩ 0.2 %p-p 2500 V
U6A-3PN +0.2 to +3/-0.2 to -3 kV 2 mA 1.5 MΩ 3500 V
U6A-6PN +0.3 to +6/-0.3 to -6 kV 1 mA 6 MΩ 7000 V
Positive polarity
Model Output Minimum Load Ripple I/O Isolation * [Vdc]
Voltage Current
U6A-10P 0.5 to 10 kV 0.5 mA 20 MΩ 0.05 %p-p -
U6A-15P 0.8 to 15 kV 0.4 mA 37 MΩ
U6A-25P 1.4 to 25 kV 0.2 mA 125 MΩ
Negative polarity
Model Output Minimum Load Ripple I/O Isolation * [Vdc]
Voltage Current
U6A-10N -0.5 to -10 kV 0.5 mA 20 MΩ 0.05 %p-p -
U6A-15N -0.8 to -15 kV 0.4 mA 37 MΩ
U6A-25N -1.4 to -25 kV 0.2 mA 125 MΩ

* I/O Isolation: The withstand voltage is the voltage value including the output voltage too.

U10 series (10 watts)

Reversible polarity
Model Output Minimum Load Ripple I/O Isolation * [Vdc]
Voltage Current
U10A-0.6PN +0.06 to +0.6/-0.06 to -0.6 kV 15 mA 0.04 MΩ 0.1 %p-p 2000 V
U10A-1.1PN +0.1 to +1.1/-0.1 to -1.1 kV 10 mA 0.11 MΩ 0.15 %p-p
U10A-1.5PN +0.15 to +1.5/-0.15 to -1.5 kV 8 mA 0.19 MΩ
U10A-2PN +0.2 to +2/-0.2 to -2 kV 6 mA 0.33 MΩ 0.2 %p-p 2500 V
U10A-3PN +0.3 to +3/-0.3 to -3 kV 4 mA 0.95 MΩ 0.2 %p-p 3500 V
U10A-6PN +0.6 to +6/-0.6 to -6 kV 2 mA 3 MΩ 0.3 %p-p 7000 V
Positive polarity
Model Output Minimum Load Ripple I/O Isolation * [Vdc]
Voltage Current
U10A-10P 1 to 10 kV 1 mA 10 MΩ 0.2 %p-p -
U10A-15P 0.15 to 15 kV 0.6 mA 25 MΩ 0.08 %p-p
U10A-25P 2.4 to 25 kV 0.33 mA 75 MΩ
Negative polarity
Model Output Minimum Load Ripple I/O Isolation * [Vdc]
Voltage Current
U10A-10N -1 to -10 kV 1 mA 10 MΩ 0.2 %p-p -
U10A-15N -0.15 to -15 kV 0.6 mA 25 MΩ 0.08 %p-p
U10A-25N -2.4 to -25 kV 0.33 mA 75 MΩ

* I/O Isolation: The withstand voltage is the voltage value including the output voltage too.

Specifications

For details, download the datasheet below.

Options

Accessory

CN3U, CU8U: Assembled input connector
Connector 9.6inch (250mm) flying wires
Models with Case C2, C3, and C4: CN3U
Models with Case C5, C6: CN8U

Diagram

Connection Diagram

For details, download the datasheet below.

Dimensions

For details, download the datasheet below.

Others

Application notes

General Use

  • For models 6 kV or less, the case (blue lead wire), input (black lead wire), and output are not connected internally. For safety reasons, always connect the case, input, and output to the ground.
  • For models 10 kV or more, the case (no lead wire) and input (black lead wire) are internally connected. For safety reasons, always connect the input to the ground. The * part in the figure below is not present on models of 10 kV or more.
  • If the output is used as floating, refer to Floating Use with High-voltage.
  • U3: up to 15 V
  • U6, U10: up to 24 V
Normal Operation
Normal Operation
  1. Make sure that the wiring is properly connected to the product as shown in the figure above before operating the product.
  2. Apply the specified input voltage and set the voltage.
  3. Models of U3, 6 kV or less, do not have a discharge resistor built into the output. When using such a model with capacitive loads, etc., install a discharge resistor in the output.
  4. When quitting the operation of the product, turn off the input power.

Monitoring Output Voltage/Current

  • C = 0.1 to 1 µF pass capacitor
  • Instead of using a voltmeter or ammeter, inserting a resistor as shown in the figure and measuring the voltage at both ends of the resistor with a DVM.
Read the voltage value with an ammeter.

Parallel Operation to Increase Output Current

  • Valid only for the same model
  • Do not parallel different models.
Parallel operation

Reducing Output Ripple

  • L = 1 m to 5 mH: A resistor is also available.
  • C = 0.01 µF to 0.1 µF: Pay attention to withstand voltage.
With this circuit the noise on the power supply side will be smaller too

Suppressing Input Ripple to Reduce effect to Input Power Source

Ground at one point.
L = 100 µH or more
C = 100 µF/35 V or more
How to reduce the influence to power supply by suppressing input ripple

Generating Required Input Voltage for Output Voltage

When load regulation is large.

This circuit can also reduce the noise generated on the input power source.

A Zener diode is also usable.
When load regulation is small.

Install a capacitor with approx. 0.01 µF to 0.1 µF on the output side to reduce the ripple on the output voltage.

Pay attention to withstand voltage.

voltage of output ripple noise

Floating Use with High-voltage

  • Models of 6 kV or less are input/output isolated, therefore they can be used with the output floating.
  • For models of 6 kV or less, the case (blue lead wire), input (black lead wire), and output are not connected internally.
  • For safety reasons, always connect the case and input to the ground.
  • U3: up to 15 V
  • U6, U10: up to 24 V
Floating Operation
Floating Operation

The Ef + Eout is less than or equal to the value of "I/O Isolation" shown on the Models.

  1. Make sure that the wiring is properly connected to the product as shown in the figure above before operating the product.
  2. Apply the specified input voltage and set the voltage.
  3. When floating the output, lower the Ef impedance because the common-mode noise may occur.
  4. When quitting the operation of the product, turn off the input power.

NOTE

  • This product is an embedded power supply, which has been designed and produced with full consideration for high-voltage safety. For further safety, ground it according to General Use and Floating Use with High-voltage.
  • Avoid short-circuiting the load for long periods of time.
  • Do not touch the output just after turning the product off, because high voltage may still present at the output. If you need to touch it, check with a voltmeter or similar device that the output voltage has dropped sufficiently, or wait until at least 20 minutes have passed. If the load is an open or capacitive load, the output voltage may not drop for a long time, so if you must touch it, be sure to discharge the output.

INPUT/OUTPUT PROPORTIONAL CHARACTERISTICS

Calculation Formula of Input Voltage to Output Voltage

Calculation example of connecting rated load RL

Calculation Formula of Input Current

Input current is defined by given an output voltage and an output current.
See the calculation at an efficiency of approximately 65%.

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High Voltage power supplies (Chassis mount/PCB mount)