DC-Transformer 145E-27-SD

Converter can be used in various applications

Key figures

  • ultrawide input voltage range: 32 ... 100 VDC
  • very high efficiency: up to 95%
  • peak input voltage: 125 VDC
  • output voltage / max. output current: 27.0 VDC / 3.7 ADC

Applications

CCCV battery charging converter with 27VDC, 3.7A output and integrated output side reverse polarity protection diode to prevent battery reverse discharge for active and passive loads. The Demke DC Transformer 145E-27-SD, the DC/DC converter with 27V output is optimized for 27V battery systems for e.g. two 13.8V modules connected in series. Custom DC/DC converter configurations: The DC battery charge current can be easily changed in hardware.The startup time can be extended by hardware in a wide range, so that countless BMS (battery management systems) can be operated. The potted DC/DC converter with the small and compact design makes applications in space critical and harsh environments easily possible.

Features

  • non-isolated DC/DC buck converter
  • robust and climate proof design
  • excellent thermal characteristics
  • permanently no-load and short-circuit proof
  • integrated EMI input and output filter
  • no power derating
  • for ambient temperatures between -40°C / +85°C
  • thermal shutdown at +90°C
  • CC/CV charging characteristic

Product Family

DC-Transformer Input Output Power
105-3.3 6 ... 36 VDC 3.3 VDC / 1.5 ADC 5 W
105-5.0 7 ... 36 VDC 5.0 VDC / 1.2 ADC 6 W
134WE-12 16 ... 160 VDC 12.0 VDC / 2.0 ADC 25 W
141-12-SD 16 ... 58 VDC 12.0 VDC / 15.0 ADC 180 W
141E-13.8-SD 16 ... 58 VDC 13.8 VDC / 15.0 ADC 200 W
141LE-13.8-On 16 ... 36 VDC 13.8 VDC / 16.0 ADC 220 W
144-24 26 ... 160 VDC 24.0 VDC / 7.0 ADC 170 W
145-12-SD 16 ... 100 VDC 12.0 VDC / 12.0 ADC 150 W
145-19-SD 21 ... 100 VDC 19.0 VDC / 10.0 ADC 190 W
145-24 26 ... 100 VDC 24.0 VDC / 10.0 ADC 240 W
145E-13.8-SD 16 ... 100 VDC 13.8 VDC / 12.0 ADC 160 W
145E-27-SD 32 ... 100 VDC 27.0 VDC / 3.7 ADC 100 W
145E-27.5-On 30 ... 100 VDC 27.5 VDC / 4.4 ADC 120 W
145E-29-SD 32 ... 100 VDC 29.0 VDC / 8.5 ADC 250 W
145E1-27.5-SD 30 ... 100 VDC 27.5 VDC / 8.0 ADC 220 W
151DH-13.8-On 17 ... 58 VDC 13.8 VDC / 20.0 ADC 280 W
154-12 18 ... 160 VDC 12.5 VDC / 15.0 ADC 190 W
154-24 28 ... 160 VDC 24.0 VDC / 13.0 ADC 300 W
154A1-24-On 28 ... 160 VDC 24.0 VDC / 13.0 ADC 300 W
154C-24 28 ... 160 VDC 24.0 VDC / 13.0 ADC 300 W
154DH-12-ON 16 ... 160 VDC 12.5 VDC / 17.0 ADC 200 W
154DH-13.8-ON 16 ... 160 VDC 13.8 VDC / 15.0 ADC 200 W
154DH-24-ON 28 ... 160 VDC 24.0 VDC / 13.0 ADC 300 W
154DH-27-On 29 ... 160 VDC 27.0 VDC / 13.0 ADC 350 W
154DH-48-On 50 ... 160 VDC 48.0 VDC / 10.0 ADC 480 W
154H-24-ON 26 ... 170 VDC 24.0 VDC / 13.0 ADC 300 W
154H-27-ON 29 ... 170 VDC 27.0 VDC / 13.0 ADC 350 W
162E-13.8-On 16 ... 80 VDC 13.8 VDC / 20.0 ADC 280 W
171E-13.8-On 19 ... 58 VDC 13.8 VDC / 45.0 ADC 600 W