A Digital Isolated High Voltage Probe for Measurements in Power Electronics

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review


For the development and optimization of highly efficient power electronic systems, it is essential to precisely measure voltage signals of fast-switching high voltage semiconductors. Due to various reasons off-the shelf high voltage differential probes are not suitable for those measurements. In this paper a digital isolated high voltage probe, especially designed for measurements in power electronics, is presented. The analog to digital conversion of the input signal is already done at the probe, the galvanic isolation is done on the digital lines. In the paper a detailed explanation about the development is given as well as an extensive characterization of a built prototype. The prototype withstands a permanent isolation voltage of 1500 V. It continuously streams 18 bit ADC data at a sampling rate of 5 MS/s. Special care is taken to reach a flat frequency response and a superb linearity up to the maximum differential input voltage of 1500 V.

Original languageEnglish
Title of host publicationProceedings - 2018 IEEE 27th International Symposium on Industrial Electronics, ISIE 2018
PublisherIEEE Xplore
Number of pages6
ISBN (Print)9781538637050
Publication statusPublished - 10 Aug 2018
Event27th IEEE International Symposium on Industrial Electronics: ISIE 2018 - Cairns, Australia
Duration: 13 Jun 201815 Jun 2018


Conference27th IEEE International Symposium on Industrial Electronics
Abbreviated titleISIE 2018
Internet address


  • Automotive electronics
  • in-struments-probes
  • power electronics
  • power measurement
  • voltage measurement

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

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