Demke DC-Transformer

DC/DC converter in Swiss qualitiy and perfection!

Isolated DC/DC converters for PCB mounting, THT

Isolated DC/DC Converters for PCB mount

28. June 2023 News

Demke Electronic - DC/DC Converter - Step Up Converter - Step Down Converter - custom specific

Customer-specific configurable DC/DC converters the DC-master voltage converters

non-isolated DC/DC buck converter Typ DC-Transformer 142E-13.8-SD with output voltage 13.8V, 200 watts and input voltage 16V to 70V

DC-Transformer 142E-13.8-SD

Input: 16 ... 70 VDC Output: 13.8 VDC / 200 Watt

non-isolated DC/DC buck-boost converter Typ DC-Transformer 257LE-24-SD with output voltage 24.0V, 300 watts and input voltage 10V to 35V

DC-Transformer 257LE-24-SD

Input: 10 ... 35 VDC Output: 24.0 VDC / 300 Watt

isolated DC/DC buck-boost converter Typ DC-Transformer 729L-24-SD with output voltage 24.0V, 450 watts and input voltage 9V to 16V

DC-Transformer 729L-24-SD

Input: 9 ... 16 VDC Output: 24.0 VDC / 450 Watt

isolated DC/DC buck-boost converter Typ DC-Transformer 755-24-SD with output voltage 24.0V, 450 watts and input voltage 18V to 110V

DC-Transformer 755-24-SD

Input: 18 ... 110 VDC Output: 24.0 VDC / 450 Watt


Demke Electronic - DC/DC Converter designed in Switzerland

Developed with the latest design tools - manufactured according to ISO 9001-2015 by Elotec Fischer Elektrotechnik GmbH - customizable from the first piece and processed into compact and robust DC/DC converters with ultra wide input range in the power range up to 1000W. Available in three climate-proofed housings with plug-in or THT connection.

  • small: 77x52x19mm, up to 200 watts
  • medium: 90x90x26mm, up to 400 watts
  • large: 130x130x28mm, up to 1000 watts

Demke DC-Converters 700 Series

Galvanically isolated 500W nominal DC/DC converter

The standard DC-DC converter is the 755-24-SD with a nominal input voltage range of 18V…110VDC, 24V output and 19A short circuit current (450W isolated power). It is well suited for all 24V consumers, active and passive loads. DC-Supply grids are common 24VDC, 48VDC, 80VDC and 96VDC.

There are several variants coming out of our universal Demke DC/DC converter with its 24V output.

The 757 version has extended power ratings of up to 800W isolated power, optimized for 24V and 48V supply grids.

767 and 767UH versions: Start up voltage is 30VDC, maximum input voltage is 70V or 110VDC for 767UH-versions

764 version: With extended input voltage range from 30VDC to 160VDC

729 and 739 versions: 10…16VDC alternator or 13.8V battery supplies, output voltages up to 100VDC - for higher output voltages above 100VDC the DC/DC of version 739-113-SD is used.

Please also refer to the DC/DC Master 7xx for any custom specific variant!

Galvanically isolated 500W nominal DC/DC converter – Demke DC-Converters 700 Series

DC/DC buck converter type 154DH-24-ON, output 24V/13A

Rely on our latest development of the 154 family. Longevity and stability in harshest environments, the DC-Transformer 154DH-24-ON is specially developed for extreme customer requirements.

We are continuing the success story. This DC/DC Buck Converter is unbeatable in performance and EMC, in interference immunity and interference emission. With 360g, max. dimensions of 90x90x26mm and the flat plug connections it fits into any application.

Very wide range of applications e.g. in e-mobility, wind power and industrial applications thanks to the ultra-wide input voltage range from 28 to 160 VDC. Also ideal for 48V, 80V, 110V DC networks with output 24VDC. Please contact us for customer-specific adaptations or required standards, we will fulfill them.