# Commission Implementing Decision (EU) 2019/314 of 21 February 2019 on the approval of the technology used in SEG Automotive Germany GmbH High efficient 48V motor generator (BRM) plus 48V/12V DC/DC converter for use in conventional combustion engine and certain hybrid powered passenger cars as an innovative technology for reducing CO2 emissions from passenger cars pursuant to Regulation (EC) No 443/2009 of the European Parliament and of the Council (Text with EEA relevance), Division 3.2: Efficiency of the 48V/12V DC/DC converter

Extent: E+W+S+N.I.

The efficiency of the 48V/12V DC/DC converter shall be determined under the following conditions:
Output voltage of 14,3V
Output current of nominal power of the 48V/12V DC/DC converter divided by 14,3V
The nominal power of the 48V/12V DC/DC converter shall be the continuous output power at the 12V side guaranteed by the manufacturer of the DC/DC converter at the conditions specified in the ISO 8854:2012.
The efficiency of the 48V/12V DC/DC converter shall be measured at least five (5) times consecutively. The average of all the measurements ( η DC ∕ DC – ) shall be calculated and used for the calculations laid down in paragraph 3.3.

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Source: https://www.legislation.gov.uk/eudn/2019/314/annex/division/3/division/3.2 (the official version)
Page: https://openlegislation.uk/eu-decision-2019-314/annex/division-3/division-3.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.