Non-Isolated DC/DC Buck Converters up to 1200 W
Our 100 series DC/DC buck converters reliably reduce high or fluctuating input voltages to stable output voltages from 3.3 V to 48 V. With an ultra-wide input range, high efficiency, EMC filters, short-circuit protection and full polyurethane encapsulation, they are designed for demanding industrial applications from −40 °C to +85 °C.
Technical features of our DC/DC buck converters
Our non-isolated 100 series DC/DC buck converters deliver maximum power and flexibility in an extremely compact design – up to 1,200 W. With an impressive 1:10 ultra-wide input range, our converters are suitable for a wide variety of requirements while providing outstanding efficiency. Designed for demanding applications, our robust and long-term reliable converters operate dependably even under extreme conditions from −40 °C to +85 °C, without power derating.
With protection against no-load operation and short circuits, as well as integrated EMC filters, our DC/DC converters provide maximum operational reliability while keeping ripple to a minimum. All DC/DC converters meet stringent industrial standards, with selected models also complying with the strict requirements of EN 55022 Class B. The protective polyurethane encapsulation ensures efficient heat dissipation and reliably protects the electronics against harmful environmental conditions.
Discover the versatility of our 100 series and take advantage of the available customisation options to find the right solution for your project.
Product Features
- Wide power range: converters from 5 W to 1200 W available
- Wide input voltage range: 6 V to 170 V for a wide range of applications
- Output voltages for every requirement from 3.3 V to 48 V
- Easy installation with wall or PCB mounting
- Efficient passive cooling through heat dissipation via the base of the housing
- Custom solutions through application-specific modifications
Typical applications
- Renewable Energy
- 12 V power supply in forklifts
- 19 V power supply for mobile IT systems
- 24 V power supply in forklifts
- 24 V power supply for pitch systems (blade pitch control) in wind turbines
- 13.8 V and 27 V backup battery charging converters
- Suitable for a wide range of applications thanks to an ultra-wide 1:10 input range, e.g. 16–160 V and more!
Nothing Suitable? We Offer Custom Solutions
Not every power supply can be solved with a standard product. Different battery voltages, special output voltages, limited installation space, special connectors or high mechanical loads may require an adapted or completely new converter solution.
We develop custom DC/DC converters with single and bipolar output voltages, individual input voltage ranges, CC/CV control, galvanic isolation and project-specific connection options.
Do you already know your requirements, or would you like us to check your application? Get in touch with us – we’ll be happy to help.
FAQs
Have questions? We have answers!
What is a non-isolated DC/DC buck converter?
When is a non-isolated DC/DC buck converter suitable?
Non-isolated DC/DC buck converters are suitable for applications where galvanic isolation between the input and output is not required. Typical applications include onboard power systems, forklifts, mobile systems, pitch systems in wind turbines, as well as battery and backup applications.
What is the advantage of an ultra-wide input range?
An ultra-wide input range allows the DC/DC converter to operate across a particularly wide range of input voltages. An input range of 16 to 160 VDC, for example, corresponds to a ratio of 1:10. This allows a single converter to cover different voltage platforms and widely fluctuating input voltages.
What does “no derating” mean for a DC/DC converter?
No derating means that the converter delivers its full rated power across the entire specified temperature range from −40 °C to +85 °C – without any reduction in power at high or low temperatures. Many standard converters have to be derated at ambient temperatures of around 50–60 °C, which means they need to be oversized. DEMKE converters deliver up to 1,200 W even under extreme conditions, eliminating the need for oversizing.
Can non-isolated DC/DC buck converters be used for battery charging?
Yes. DC/DC converters with a defined CC/CV charging profile can be used for controlled battery charging. The charging current is initially limited, after which the charging voltage is regulated. The required values must be matched to the specific battery and application.
Can the DC/DC buck converters be customised?
Yes. Depending on the project, the input voltage range, output voltage, power, connections or mechanical design can be adapted to the requirements of the application. Get in touch with us if a standard product does not fully meet your requirements.
Any further questions?