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VICHIP DC Converter PI31xx Series

  • Complete isolated DC-DC with Zero Voltage Switching Module
  • 50W / 60W output power
  • Efficiency up to 89% (dependent upon converter model)
  • Output voltage sensing without opto coupler use for higher reliability
  • Three input-voltage ranges for Communication Industrial
  • Rugged/M-Grade Applications
  • Communication Converters have max peak input voltage of 100V / 100ms (non-operating)
  • Surface Mount 0.87 x 0.65 x 0.265in high-density package
  • 900kHz switching frequency; minimizes input filtering and reduces output capacitance
  • On / Off control; positive logic ENABLE
  • Wide trim range +10 / –20% Trim
  • Temperature Monitor (TM) & Overtemperature Protection (OTP)

PI31xx Series

Product Overview


PI31xx Series 

High Density, Isolated, DC-DC, ZVS Converters 

Thermally Enhanced, Surface-Mount Power-System-in-Package (PSiP) for use in Networking, Industrial, Rugged Defense, Isolated, Board-Level Power and Space Constrained System Applications.

The PI31xx series is a family of high density, isolated DC-DC Zero-Voltage Switching (ZVS) converter modules integrating controller, power swites, planer magnetics, and support components all within a high density surface-mount package. This complete sloution utilizes a high performance ZVS topology enabling high switching frequencies and providing best in class power density. The high switching frequency reduces input and output filtering requirements, further decreasing size and cost of the overall solution.

These high density converter modules are offered in three input voltage operating ranges; 48 Vin nominal , 28 Vin nominal for rugger high temperature or M-Grade applications, and 24 Vin nominal for industrial application. All PI31xx Converters offer a similar function and feature set.

Fully equipped with a variety of programmable features, the PI31xx includes output voltages trimming, programmable soft-start capability, and remote on/off ENABLE. There is also a temperature monitor funtion providing an analog output voltage proportional to the internal module temperature.

The PI31xx is self-protected against fault conditiions including; input over-voltage, under-voltage lockout, over-temperature, and output over-voltage protection. A constant current limit threshold is employed to protect against short circuit and overload conditions. All fault conditions have an auto-restart function.


Input Voltage

48 V (36 – 75 V) Comms.

28 V (16 – 50 V) M-Grade

24 V (18 – 36 V) Industrial

Input Voltage


Withstands 100 V / 100 ms
Output Voltage 3.3, 5, 12, 15, 18 V
Output Power 50 W / 60 W (dependent upon converter model)
Efficiency Up to 87%



2,250 V

Output Voltage


Vout +/–10%

22 x 16.5 x 6.7 mm

Selection Table










Communications (–40 to 125°C)
PI3101-00-HVIZ 36 - 75V 3.3V 3.0 – 3.6V 18A
PI3105-00-HVIZ 36 - 75V 12V 9.6 – 13.2V 5A
PI3110-01-HVIZ 41 – 57V 18V 16.2 – 19.8V 3.3A
Industrial (–40 to 125°C)
PI3109-01-HVIZ 18 – 36V 5V 4.0 – 5.5V 10A
PI3106-01-HVIZ 18 – 36V 12V 9.6 – 13.2V 4.2A
M-Grade (–55 to 125°C)
PI3108-00-HVMZ 16 – 50V 3.3V 3.0 – 3.6V 10A
PI3109-00-HVMZ 16 – 50V 5V 4.0 – 5.5V 10A
PI3106-00-HVMZ 16 – 50V 12V 9.6 – 13.2V 4.2A
PI3111-00-HVMZ 16 – 50V 15V 12 – 16.5V 3.3A

Technical Illustration

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