DC-Transformer 257LE1-29
Key figures
- ultrawide input voltage range: 6 ... 28 VDC
- very high efficiency: up to 96%
- peak input voltage: 30 VDC
- output voltage / max. output current: 29.0 VDC / 6.5 ADC
Applications
Short-circuit proof Buck-Boost DC/DC converter or DC charging converter for primary use in supercapacitor powered autonomous systems like automated guided vehicles (AGV) with backup battery on the output side. The very low switch-on threshold of the LEX version is approximately 7V. At 200W power this DC/DC converter boosts up the input voltage to 29V input currents up to 30A and beyond. Even just before the 6V undervoltage logout threshold, a battery connected on the output side can be charged with maximum short-circuit current. Customer-specific adjustments are possible at any time. News article available
Features
- non-isolated DC/DC buck-boost 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 |
|---|---|---|---|
| 256E-24-SD | 15 ... 70 VDC | 24.0 VDC / 6.3 ADC | 150 W |
| 257E-24-SD | 15 ... 35 VDC | 24.0 VDC / 15.0 ADC | 360 W |
| 257E-28-SD | 15 ... 35 VDC | 28.0 VDC / 13.0 ADC | 360 W |
| 257E1-24-SD | 15 ... 35 VDC | 24.0 VDC / 15.0 ADC | 360 W |
| 257LE-24-SD | 10 ... 35 VDC | 24.0 VDC / 12.5 ADC | 300 W |
| 257LE1-29 | 6 ... 28 VDC | 29.0 VDC / 6.5 ADC | 180 W |
| 257LEX-12-SD | 7 ... 35 VDC | 12.0 VDC / 20.0 ADC | 240 W |
| 257LEX-24-SD | 7 ... 35 VDC | 24.0 VDC / 8.0 ADC | 200 W |
| 258E-24 | 15 ... 58 VDC | 24.0 VDC / 13.0 ADC | 300 W |
| 258E-50 | 20 ... 63 VDC | 50.4 VDC / 10.0 ADC | 500 W |
| 258E1-27.5-ON | 15 ... 58 VDC | 27.5 VDC / 8.0 ADC | 220 W |