DC/DC-Converters
172-24-SD – DC/DC step-down converter 48 VDC to 24 VDC by Demke Electronic

172-24-SD | DC/DC step-down converter 48 VDC to 24 VDC, 960 W

DC-Converter 172-24-SD

SKU: 172.002
BTO – build to order / manufactured on request
Lifecycle: BTO – Built to order

The 172-24-SD by Demke Electronic is a non-isolated DC/DC step-down converter for a nominal input voltage of 48 VDC. It operates across an input voltage range of 26 to 70 VDC and delivers 24 VDC at up to 40 A, equivalent to 960 W of output power. Efficiency reaches up to 97% 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 Vin26…70 VDC
Output voltage Vout24 VDC
Output current Iout40 A
Output power Pout960 W
Efficiencyup to 97 %
Technical Documentation
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Product Description: DC-Converter 172-24-SD

The Demke 172-24-SD is a powerful, non-isolated DC/DC converter designed to reliably supply high-power 24 V loads from 48 V vehicle electrical systems and industrial DC power supplies.

With an output power of up to 960 W and an output current of 40 A, the converter is particularly suitable for applications with high power requirements. The input is designed for a nominal voltage of 48 V and supports input voltages up to 70 V.

For reliable operation even under demanding environmental conditions, the 172-24-SD is designed for an extended operating temperature range from −40 °C to +85 °C. Integrated EMC filters on the input and output sides, together with short-circuit protection, support stable and robust operation.

Technical Data: DC-Converter 172-24-SD

Electrical Specifications

Input voltage Vin26…70 VDC
Nominal input voltage48 VDC
Peak input voltage75 VDC
Max. input current40 A
Recommended input fuse50 A
Output voltage Vout24 VDC
Output current Iout40 A
Output power Pout960 W
Efficiencyup to 97 %
Output configurationUnipolar
IsolationNon-isolated
Insulation strength primary to case1500 VDC
EMI filterInput and output
Switching frequency110 kHz
Max. capacitive loadUnlimited
Control functionON – Enable
Enable voltage26…70 VDC

Mechanical Specifications

Dimensions130 × 130 × 28 mm
Weight900 g
MountingWall mounting
Connection typeCable
Cable length300 mm

Standards and Certifications

CEEN 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 parallelvery low input ripple and noisewide input voltage rangefor ambient temperatures from -40 °C to +85 °Cthermal shutdown at +90 °C

Applications

Battery-Powered SystemsBattery Chargers & Charging SystemsE-MobilityIntralogistics & Warehouse AutomationMaterial Handling Vehicles

Downloads and Documentation

DatasheetTechnical datasheetSafety instructionsTechnical drawing
We convert power for first-class projects

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