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
Take away
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 | 180 W |
| 141LE-13.8-On | 16 ... 36 VDC | 13.8 VDC / 16.0 ADC | 220 W |
| 142E-13.8-SD | 16 ... 70 VDC | 13.8 VDC / 15.0 ADC | 200 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 ... 75 VDC | 13.8 VDC / 22.0 ADC | 300 W |
| 171E-13.8-On | 19 ... 58 VDC | 13.8 VDC / 45.0 ADC | 600 W |