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The UMHV Series is a family of ultra-miniature single-output DC to DC converters supplying up to 5kV in 0.125 cubic inches (0.5” x 0.5” x 0.5”). These ultra-compact converters are ideal for applications requiring small size and ease of use. A high impedance programming input makes it very easy to use, eliminating the need for a low impedance adjustable power source voltage.

HVM’s proprietary resonant converter design minimizes quiescent current and operating noise while delivering maximum performance and reliability. A special feature of this power supply is its extremely low input current, typically 1/10th of that of similar devices on the market, making it ideal for battery powered applications.

The devices operate directly from either 5V or 12V input. Output voltage is independent of input power voltage and is proportional to the programming voltage (0 to IN+ produces 0 to full scale output) and features excellent linearity. The output power rating is 0.5W and the input to output isolation is ± 500V. The UMHV Series is very stable over a wide operating temperature range.

The UMHV Series is available with alternate output voltages; consult sales for additional information.


Input Power Voltage (IN+):

5V or 12V ± 10%

UMHV Series

Precision HV DC/DC Converter
  • Ultra-Miniature Case Size (0.5” x 0.5” x 0.5”)

  • High Impedance Programming Input (10kΩ)

  • Extremely Low Quiescent Current (5mA typical)

  • No External Components Required

  • PCB Mountable

  • Low Ripple and EMI/RFI

  • High Input/Output Isolation

  • Wide Operating Temp Range (-55°C to +70°C)

  • Available in positive or negative outputs

Application Schematic
Typical Applications
  • Mass Spectrometers

  • Photomultiplier Tubes (PMT)

  • Electrostatic Detectors

  • High Voltage Biasing

  • Electrostatic Chucks

  • Piezo Devices

  • HV Amplifiers

Programming Voltage (PGM):

0 to 5V IN+ results in 0 to rated output voltage

Programming Input Impedance:



Output Tolerance at No Load:

± 5%

± 500Vdc

Input-Output Isolation:

Load Regulation:

20% (drop from no load to full load)

Output Ripple:

<2% typical at full load; Note: additional external capacitance can be added to reduce ripple

Oscillator Frequency:

45 kHz – 80 kHz


55% typical at full load


4.1 grams typical


Encapsulated in high performance epoxy

Case Materials:

Thermsoset plastic (Diallyl Phthalate); Optional metal shield case available

Operating Temp Range:


-55⁰C to +70⁰C

Storage Temp Range:

-55⁰C to +85⁰C

Innovative High Voltage Products


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