PC software tests switching power supplies

November 30, 2014 // By Christoph Hammerschmidt
Standard measurements on switching power supplies can be carried out with a new PC software from Rigol. In combination with the series DS/MSO2000A, DS4000 or DS6000 oscilloscopes from the same vendor, the software enables users to set up small test systems for switching power supply developers.

Switching power supplies are commonly used in both the electronics and consumer industry. They can be found in a broad range of applications from TV sets to computers and halogen illuminations as well as in many other consumer devices. Various parameters of these power supplies have to be measured and compared with limits during the development and also during the production phase. All built-in switching power supplies must be tested and have to be compliant with the European standard IEC61000-3-2.

Similar to the EMI testing (CISPR standard), different requirements apply to pre-compliance test (mostly during the development phase) und compliance test (certification).

Rigol Technologies EU now offers a competitive pre-compliance test solution for the EMI field as well as a solution for the “power analysis” area. The test system consists of a PC software, an oscilloscope, as well as a current probe and a voltage probe for connection with the test object.

The software is designed to support engineers in three areas of measurement:

1. Measurements at the input

  • Power Quality
  • Harmonics (IEC61000-3-2)
  • In-rush Current

2. Measurements at the switching circuitry

  • Switch Loss
  • Save Operating Area
  • Modulation

3. Measurements at the output

  • Output Analysis of the Switching Power Supply.

Today also end customers of consumer electronics begin to question and critically analyse these parameters during the purchasing procedure. Therefore well prepared and complete data sheets could be an ideal tool for manufacturers to promote the product.

Similar to the EMC pre-compliance testing during the design phase, the costs for certification and the time to market can be reduced with Rigol's new test solution. With this, Rigol also helps to improve the product quality.

Further information: www.rigol.eu