365DH-24-SD | Galvanically isolated DC/DC buck-boost converter 48 VDC to 24 VDC, 200 W

DC-Converter 365DH-24-SD

SKU: 365.006
BTO – build to order / manufactured on request
Lifecycle: BTO – Built to order

The 365DH-24-SD by Demke Electronic is a galvanically isolated DC/DC buck-boost converter for a nominal input voltage of 48 VDC. It operates across an input voltage range of 18 to 100 VDC and delivers 24 VDC at up to 8.40 A, equivalent to 200 W of output power. Efficiency reaches up to 92% at nominal input voltage and full load.

CC/CViConstant-current/constant-voltage control, e.g. for charging applications.Parallel operation / active loadsInput and output EMI filterNo power deratingNo-load and short-circuit proof
Input voltage Vin18…100 VDC
Output voltage Vout24 VDC
Output current Iout8.4 A
Output power Pout200 W
Efficiencyup to 92 %

Product Description: DC-Converter 365DH-24-SD

he Demke 365DH-24-SD is a galvanically isolated buck-boost DC/DC converter designed for demanding battery, vehicle and industrial applications. With its exceptionally wide input voltage range of 18 to 100 VDC, the converter provides a regulated 24 VDC output at up to 8.4 A, corresponding to an output power of 200 W.

The ultra-wide input range allows the converter to operate across different battery systems and DC power networks while providing substantial tolerance against voltage variations during operation. This makes the 365DH-24-SD particularly suitable for applications where the supply voltage can change significantly depending on state of charge, load conditions, regenerative operation or other operating states.

The wide input voltage range also allows the same DC/DC converter platform to be used across different system architectures. This can reduce the number of converter variants required and simplify system development, spare-parts management and standardisation across vehicle, machine and equipment platforms.

As a special operating condition, the converter can be operated from input voltages as low as 16 VDC. In this operating range, the converter remains functional, but the output voltage will be below the nominal 24 VDC. This provides additional operational reserve in situations where the supply voltage temporarily drops below the specified nominal input range.

Galvanic isolation between input and output provides electrical separation between different power systems. Combined with CC/CV control, support for active loads and the possibility of parallel operation, the 365DH-24-SD offers a high degree of flexibility for battery systems, charging applications and dynamic electrical loads.

Typical applications include battery and energy storage systems, e-mobility, material-handling vehicles, AGVs, AMRs, intralogistics, robotics, automation and supercapacitor systems. The converter is also well suited for applications with highly variable DC supply voltages and increased requirements for electrical isolation and environmental robustness.

For reliable operation in demanding environments, the power electronics are fully encapsulated in polyurethane. The potting compound protects the electronics against moisture, contamination, vibration and other environmental influences while supporting efficient thermal coupling. The 365DH-24-SD is designed for ambient temperatures from -40 °C to +85 °C and achieves an efficiency of up to 92 %.

With its 18 to 100 VDC input range, galvanic isolation and 200 W output power at 24 VDC, the Demke 365DH-24-SD provides a compact and rugged DC/DC solution for modern battery, vehicle and automation systems.

Technical Data: DC-Converter 365DH-24-SD

Electrical Specifications

Input voltage Vin18…100 VDC
Nominal input voltage48 VDC
Peak input voltage125 VDC
Max. input current12 A
Recommended input fuse15 A
Output voltage Vout24 VDC
Output current Iout8.4 A
Output power Pout200 W
Efficiencyup to 92 %
Output configurationUnipolar
IsolationGalvanically isolated
Insulation strength primary to secondary2100 VDC
Insulation strength primary to case2100 VDC
EMI filterInput and output
Switching frequency135 kHz
Max. capacitive loadUnlimited
Control functionSD – Shutdown
Shutdown voltage-0.2…2.8 VDC

Mechanical Specifications

Dimensions90 × 90 × 26 mm
Weight370 g
MountingWall mounting
Connection typeConnector strip

Standards and Certifications

CEEN 50155EN 55022 < Class AEN 61000-4-2EN 61000-4-3EN 61000-4-4EN 61000-4-5EN 61000-4-6EN 61000-6-2EN 61000-6-4IEC 60068-2-6:2007IEC 60068-2-27:2009REACHRoHS

Product Features

robust and climate-resistant designexcellent thermal characteristicsfull PU potting for demanding environmental conditionscontinuous no-load and short-circuit proofintegrated EMI input and output filterno power deratingCC/CV charging characteristiciConstant-current/constant-voltage control, e.g. for charging applications.for active loads, can be connected in parallelshutdown function via SD pinvery low input ripple and noiseultra-wide input voltage rangefor ambient temperatures from -40 °C to +85 °Cthermal shutdown at +90 °C
We convert power for first-class projects

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