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SMHV Series

The SMHV Series is a family of sub-miniature singleoutput, fully regulated DC to DC converters supplying up to 10kV @1W in 0.434 cubic inches (0.85” x 0.85” x 0.6”). These ultra-compact converters are ideal for applications requiring small size, high performance, and ease of use. HVM’s proprietary, ultra-compact resonant converter design minimizes quiescent current and operating noise while delivering maximum performance and reliability. The devices operate directly from 5VDC ± 0.5VDC input. Output voltage is independent of input power voltage and is proportional to the programming voltage (0 to 5V produces 0 to full scale output) and features excellent linearity. Voltage and current monitor outputs provide the user with operational information for maximum control. The SMHV Series has additional features such as voltage and current monitor outputs, and current limit control input. The SMHV Series is very stable over a wide operating temperature range. Available with alternate output voltages, consult sales for additional information.


Input Power Voltage (IN+):

5V ± 10%

Programming Voltage (PGM):

0 to 5VDC results in 0 to full scale output

Programming Input Impedance:


Current Limit (ILIM):

0 to 1VDC on ILIM input results in output current limiting from 0 to 100%. NOTE: to disable current limit, connect ILIM pin to 5V.

SMHV Series

Precision Regulated HV DC/DC Converter
  • Models up to 10kV @1W

  • Sub-Miniature Case Size (.85”x.85”x.6”)

  • 5V Operation

  • Adjustable Output Proportional to 0 - 5V Programming Input

  • Tight Output Regulation

  • Very Low Quiescent Current 

  • Output Current Limiting

  • Output Voltage and Current Monitors

  • Wide Operating Temp (-55⁰C to +70⁰C)

Application Schematic
SMHV Schematics
Typical Applications
  • Mass Spectrometers

  • Photomultiplier Tubes (PMT)

  • Electrostatic Detectors

  • High Voltage Biasing

  • Electrostatic Chucks

  • Piezo Devices

  • HV Amplifiers

± 5%

Output Tolerance at No Load:

Output Voltage Monitor (VMON):

0 to 1VDC output, corresponding to 0 to 100% of rated output; output impedance: 1kΩ

Output Current Monitor (IMON):

0 to 1VDC output, corresponding to 0 to 100% of rated current; output impedance: 1kΩ

Input-Output Isolation:

Not isolated, HVRTN internally connected to GND

Load Regulation:

<0.2% (over entire load range)

Output Ripple:

< 0.01%

Oscillator Frequency:

45 kHz - 80 kHz


60% Typical at full load


15 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

SMHV Dimensions
SMHV Models
Innovative High Voltage Products


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