757-27-SDB4 – isolated DC/DC converter 48 VDC to 27 VDC by Demke Electronic

757-27-SDB4 | Galvanically isolated DC/DC buck-boost converter 48 VDC to 27 VDC, 600 W

Name: DC-Converter 757-27-SDB4
Brand: Demke Electronic
SKU: 757.006

DC-Converter 757-27-SDB4

SKU: 757.006

Lifecycle: BTO – Built to order

The 757-27-SDB4 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 19 to 70 VDC and delivers 27 VDC at up to 22 A, equivalent to 600 W of output power. Efficiency reaches up to95% at nominal input voltage and full load.

CC/CViParallel operation / active loadsInput and output EMI filterNo power deratingNo-load and short-circuit proof

Input voltage Vin19…70 VDC

Output voltage Vout27 VDC

Output current Iout22 A

Output power Pout600 W

Efficiencyup to 95 %

Product Description: DC-Converter 757-27-SDB4

The DC/DC converter with 27VDC or 29VDC output voltage at 22A rated current is ideally suited for 24/7 supercapacitor operated AGVs or shuttles.The constant short-circuit current of approx. 22A and the wide input range of 19 to 70VDC give this galvanically isolated DC/DC step-up and step-down converter ideal properties in harsh applications. Due to the polyurethane potting and the integrated cable connections, the unit has excellent climate-proof properties.Adjustments to the open-circuit voltage and thus the final charging voltage are very simple and possible at any time. We are looking forward to your enquiry!

Technical Data: DC-Converter 757-27-SDB4

Electrical Specifications

Input voltage Vin	19…70 VDC
Nominal input voltage	48 VDC
Peak input voltage	75 VDC
Max. input current	35 A
Recommended input fuse	50 A
Output voltage Vout	27 VDC
Output current Iout	22 A
Output power Pout	600 W
Efficiency	up to 95 %
Output configuration	Unipolar
Isolation	Galvanically isolated
Insulation strength primary to secondary	2100 VDC
Insulation strength primary to case	2100 VDC
EMI filter	Input and output
Switching frequency	130 kHz
Max. capacitive load	Unlimited
Control function	SD & SH
Shutdown voltage	-0.2…2.8 VDC
Switch-high voltage	-0.2…0.2 VDC

Mechanical Specifications

Dimensions	130 × 130 × 27 mm
Weight	900 g
Mounting	Wall mounting
Connection type	Cable
Cable length	300 mm

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 60068-2-27:2009ISO 20653:2013 – IP6KXISO 20653:2013 – IPX9KREACHRoHS

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 characteristicifor 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 VehiclesWind Energy

Downloads and Documentation

Datasheet Technical datasheet Safety instructions Technical drawing Characteristic curves

We convert power for first-class projects

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