DC/DC Buck Converter

Demke Electronic's portfolio includes non-isolated DC/DC step-down converters up to 1000W power. Demke DC/DC buck converters are assigned to the 100 series.

Thanks to their universal design and discrete construction, our DC/DC step-down converters with their 1:10 ultra-wide input range stand out from other dc-dc converters and can be used in a variety of applications.

All Demke DC-Transformer have excellent mechanical and electrical characteristics. Our DC/DC converters are extremely robust and long-term stable. With the help of integrated EMC input and output filters, we limit the ripple and noise of current and voltage to a minimum. All DC/DC buck converters comply with common industry standards, some even with residual EMC standard according to EN55022-B.

Obviously Demke DC Transformer of the 100 series normally can be used at ambient temperatures from -40°C to +85°C and are no-load and short-circuit proof over the entire specified temperature range.

The performance record is completed by the high specific power with a very high efficiency.

The polyurethane potting protects the electronic circuit against environmental influences and distributes the generated heat loss during operation homogeneously over the entire DC/DC converter, so that a passive heat sink via the bottom of the housing is sufficient in most cases.

We have listed a selection of galvanically non-isolated DC/DC step-down converters below. If the suitable product is not listed, please have a look at our DC-Master 100 series and configure your DC/DC-converter on your own. You can find a complete product selection here.

Characteristics DC/DC buck converters

  • Power range from 5W to 600W
  • Ultra wide input voltage ranges from 6V to 170V
  • Output voltages from 3.3V to 48V
  • Wall mounting and PCB mounting
  • Passive heat dissipation via housing base
  • Customer-specific adaptations possible

Currently in use

  • 12V DC power supply in forklift trucks
  • 19V DC power supply in mobile computer systems
  • 24V DC power supply in forklift trucks
  • 24V DC power supply in pitch systems (control of blade adjustment)
        in wind power systems
  • 13.8V, 27V and 50.2V as backup battery charging DC/DC converter

Universal applicable thanks to ultra wide range input of 1:10, z.B. 16…160V and more!


Overview DC/DC Buck Converter

non-isolated DC/DC buck converter Typ DC-Transformer 105-3.3 with output voltage 3.3V, 5 watts and input voltage 6V to 36V

105-3.3

Vin: 6 ... 36 VDC
Vout / Max. Current: 3.3 VDC / 1.5 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 105-5.0 with output voltage 5.0V, 6 watts and input voltage 7V to 36V

105-5.0

Vin: 7 ... 36 VDC
Vout / Max. Current: 5.0 VDC / 1.2 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 134WE-12 with output voltage 12.0V, 25 watts and input voltage 16V to 160V

134WE-12

Vin: 16 ... 160 VDC
Vout / Max. Current: 12.0 VDC / 2.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 141-12-SD with output voltage 12.0V, 150 watts and input voltage 16V to 63V

141-12-SD

Vin: 16 ... 63 VDC
Vout / Max. Current: 12.0 VDC / 12.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 141E-13.8-SD with output voltage 13.8V, 200 watts and input voltage 16V to 58V

141E-13.8-SD

Vin: 16 ... 58 VDC
Vout / Max. Current: 13.8 VDC / 15.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 141LE-13.8-On with output voltage 13.8V, 220 watts and input voltage 16V to 36V

141LE-13.8-On

Vin: 16 ... 36 VDC
Vout / Max. Current: 13.8 VDC / 16.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 144-24 with output voltage 24.0V, 170 watts and input voltage 26V to 160V

144-24

Vin: 26 ... 160 VDC
Vout / Max. Current: 24.0 VDC / 7.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 145-12-SD with output voltage 12.0V, 150 watts and input voltage 16V to 100V

145-12-SD

Vin: 16 ... 100 VDC
Vout / Max. Current: 12.0 VDC / 12.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 145-19-SD with output voltage 19.0V, 190 watts and input voltage 21V to 100V

145-19-SD

Vin: 21 ... 100 VDC
Vout / Max. Current: 19.0 VDC / 10.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 145-24 with output voltage 24.0V, 240 watts and input voltage 26V to 100V

145-24

Vin: 26 ... 100 VDC
Vout / Max. Current: 24.0 VDC / 10.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 145E-13.8-SD with output voltage 13.8V, 160 watts and input voltage 16V to 100V

145E-13.8-SD

Vin: 16 ... 100 VDC
Vout / Max. Current: 13.8 VDC / 12.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 145E-27-SD with output voltage 27.0V, 100 watts and input voltage 32V to 100V

145E-27-SD

Vin: 32 ... 100 VDC
Vout / Max. Current: 27.0 VDC / 3.7 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 145E-27.5-On with output voltage 27.5V, 120 watts and input voltage 30V to 100V

145E-27.5-On

Vin: 30 ... 100 VDC
Vout / Max. Current: 27.5 VDC / 4.4 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 145E-29-SD with output voltage 29.0V, 250 watts and input voltage 32V to 100V

145E-29-SD

Vin: 32 ... 100 VDC
Vout / Max. Current: 29.0 VDC / 8.5 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 145E1-27.5-SD with output voltage 27.5V, 220 watts and input voltage 30V to 100V

145E1-27.5-SD

Vin: 30 ... 100 VDC
Vout / Max. Current: 27.5 VDC / 8.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 151DH-13.8-On with output voltage 13.8V, 350 watts and input voltage 17V to 58V

151DH-13.8-On

Vin: 17 ... 58 VDC
Vout / Max. Current: 13.8 VDC / 25.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154-12 with output voltage 12.5V, 190 watts and input voltage 18V to 160V

154-12

Vin: 18 ... 160 VDC
Vout / Max. Current: 12.5 VDC / 15.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154-24 with output voltage 24.0V, 300 watts and input voltage 28V to 160V

154-24

Vin: 28 ... 160 VDC
Vout / Max. Current: 24.0 VDC / 13.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154A1-24-On with output voltage 24.0V, 300 watts and input voltage 28V to 160V

154A1-24-On

Vin: 28 ... 160 VDC
Vout / Max. Current: 24.0 VDC / 13.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154C-24 with output voltage 24.0V, 300 watts and input voltage 28V to 160V

154C-24

Vin: 28 ... 160 VDC
Vout / Max. Current: 24.0 VDC / 13.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154DH-12-ON with output voltage 12.5V, 200 watts and input voltage 16V to 160V

154DH-12-ON

Vin: 16 ... 160 VDC
Vout / Max. Current: 12.5 VDC / 17.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154DH-13.8-ON with output voltage 13.8V, 200 watts and input voltage 16V to 160V

154DH-13.8-ON

Vin: 16 ... 160 VDC
Vout / Max. Current: 13.8 VDC / 15.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154DH-24-ON with output voltage 24.0V, 300 watts and input voltage 28V to 160V

154DH-24-ON

Vin: 28 ... 160 VDC
Vout / Max. Current: 24.0 VDC / 13.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154DH-27-On with output voltage 27.0V, 350 watts and input voltage 29V to 160V

154DH-27-On

Vin: 29 ... 160 VDC
Vout / Max. Current: 27.0 VDC / 13.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154DH-48-On with output voltage 48.0V, 480 watts and input voltage 50V to 160V

154DH-48-On

Vin: 50 ... 160 VDC
Vout / Max. Current: 48.0 VDC / 10.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154H-24-ON with output voltage 24.0V, 300 watts and input voltage 26V to 170V

154H-24-ON

Vin: 26 ... 170 VDC
Vout / Max. Current: 24.0 VDC / 13.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 154H-27-ON with output voltage 27.0V, 350 watts and input voltage 29V to 170V

154H-27-ON

Vin: 29 ... 170 VDC
Vout / Max. Current: 27.0 VDC / 13.0 ADC

non-isolated DC/DC buck converter Typ DC-Transformer 171E-13.8-On with output voltage 13.8V, 600 watts and input voltage 19V to 58V

171E-13.8-On

Vin: 19 ... 58 VDC
Vout / Max. Current: 13.8 VDC / 45.0 ADC