Isolated DC/DC Buck-Boost Converters up to 800 W
Isolated DC/DC buck-boost converters stabilise variable input voltages and provide a reliable, galvanically isolated output voltage. DEMKE DC/DC converters in the 300 and 700 series deliver up to 800 W of power, ultra-wide input ranges of up to 1:10, high efficiency and reliable operation from −40 °C to +85 °C – for battery systems, AGVs, forklifts and demanding industrial power supply applications.
Technical Features of Our Isolated DC/DC Buck-Boost Converters
Our isolated and predominantly galvanically isolated DC/DC buck-boost converters in the 300 and 700 series deliver up to 800 W of power and combine outstanding efficiency with ultra-wide input ranges of up to 1:10. These robust and long-term reliable DC/DC converters are designed for extreme temperatures from −40 °C to +85 °C, with no power derating, and provide reliable performance even under demanding conditions. They are also protected against no-load operation and short circuits, ensuring maximum safety and long service life.
Integrated EMC filters effectively reduce ripple, ensuring a stable and clean output voltage. Our DC/DC converters meet the highest industry standards, with selected models also complying with the strict requirements of EN 55022 Class B. The protective polyurethane encapsulation provides excellent protection against environmental influences and ensures efficient heat dissipation, further increasing the service life and reliability of the converters.
Discover the wide range of products and customisation options available in our 300 and 700 series to find the perfect solution for your application.
Product Features
- Wide power range: converters up to 800 W available
- Wide input voltage range: 8 V to 160 V for many different applications
- Output voltages from 3.3 V to 200 V for different requirements
- Easy installation with PCB or wall mounting
- Efficient passive cooling through heat dissipation via the base of the housing
- Bipolar output voltages with asymmetrical load distribution, or configured as a voltage doubler
- Voltage doubling
- Excellent CC/CV charging profile
- Custom modifications available
Typical applications
- 12 V power supply for forklifts and AGVs
- 19 V power supply for mobile IT systems
- 24 V power supply for forklifts, AGVs and many other applications
- Suitable for a wide range of applications thanks to an ultra-wide 1:10 input range
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FAQs
Have questions? We have answers!
What is an isolated DC/DC buck-boost converter?
An isolated DC/DC buck-boost converter can both step down and step up a variable DC input voltage while galvanically isolating the input and output. This keeps the desired output voltage stable even when the input voltage is temporarily below or above the output voltage.
When is galvanic isolation useful in a DC/DC converter?
Galvanic isolation is useful when the input and output need to be electrically isolated from each other. It can isolate differences in potential, prevent ground loops and separate sensitive system areas from each other. This is particularly relevant for demanding industrial power supplies and battery systems.
What is the advantage of an ultra-wide input range of up to 1:10?
An ultra-wide input range of up to 1:10 allows a DC/DC converter to operate across a very wide input voltage range. This makes it possible to handle widely fluctuating battery voltages or different voltage platforms with a single converter.
Can isolated DC/DC buck-boost converters be used for battery charging?
Yes. Devices with a defined CC/CV charging profile can be used for controlled battery charging. The charging current and voltage are regulated according to the specific battery and application.
What does “no derating” mean for isolated DC/DC converters?
No derating means that the converter can deliver its full rated power across the specified temperature range from −40 °C to +85 °C without reducing its output power at high or low temperatures.
Can isolated DC/DC converters be customised?
Yes. Depending on the project, parameters such as input voltage range, output voltage, power, galvanic isolation, 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.
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