Product Details

Switching Mode Power Supplies

Power supply is a broad term. The two popular categories of power supplies are switched mode power supply (SMPS) and linear regulated power supply.

Like a linear power supply, the switched mode power supply too converts the available unregulated AC or DC input voltage to a regulated DC output voltage. A single power supply unit may need to output several different voltages. The individual output voltages may have different ratings in terms of output current, voltage regulation and ripple voltages. These outputs may need isolation between them. Often the power supply input is from the standard utility power plug point 230V / 50Hz. Or 220V DC as per the requirement of the plant design.

The advantages of SMPS power supplies are they are compact in size, high efficiency, less dissipation of Heat, can be used to provide high efficiency voltage conversions in voltage step up or ?Boost? applications or step down ?Buck? applications.

RATO has designed, developed and produced many types of Switching Mode Power supplies which work with 230V AC or 220V DC, with different output voltages and current ratings, we could achieve <10mV peak to peak ripple/ noise voltage with <0.1% line and 0.2% load regulations.


  • Input can be either 230V AC or 220V DC or any other desired fixed or variable AC or DC voltages.
  • DC Outputs can be ? 5V, ? 12V, ? 15V, ?24V, +28V, +45V, +48V, 90V or any other voltage or multiple output voltages.
  • Variable output voltages can be 22 to 32V DC or any desired variable voltage.
  • We have supplied units with Current Rating as high as 60 A; can be worked out for any desired value.
  • Very low ripple/Noise <10mV.
  • Excellent Line and Load Regulation <0.2%.
  • Short circuit and Over voltage protections.
  • Power supply failure status indication local/ Remote.
  • Isolation between outputs, input & outputs and Chassis.
  • Digital Display of each individual voltage & current.
  • 0.1% Stability of the Output voltage for 24 hrs or better.
  • Temp. Coefficient of 0.05%/0C or better.
  • Parallel operation and Dynamic load current sharing.
  • Better Line and Load Dynamic Response.
  • Units can be hot swapped.
  • 19? Rack mountable units and standalone types.
  • Climatic Tests Complies with IS9000.
  • EMI/EMC Tests Complies with IEC 61000.
  • SEISMIC Tests complies with IEEE 344.

RATO is prepared to take up development and supply of custom built Power supplies on request.