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| Bidirectional auxiliary high voltage converter, 400-900VDC, 28VDC, 125A |
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| Features |
- Bidirectional Operation
- Resonant topology ensures low switching losses and excellent EMC-behavior
- Very high efficiency
- Compact and lightweight
- CAN-controlled
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| Description |
The BSC618-24V is a bidirectional DC/DC-Converter with galvanic isolation between the high voltage and low voltage circuitry. The first stage is a series-resonant operating transformer, which provides galvanic isolation. The second stage is a pair of buck/boost-converters, that are operated interleaved in order to reduce ripple current. Due to the resonant topology of the transformer stage and the AutoCommutation of the buck/boost-converter, not only losses are reduced to a minimum but also an excellent EMC-behaviour is obtained.
Applications
- Electric, hybrid and fuel cell trucks and buses
- power link between high and low voltage power circuits in a vehicle
- provide power on the LV side for loads like headlights, wipers, radio etc.
- provide power on the high voltage side from 24V battery for startup of engines or fuel cells
- substitute alternator / cranking motor / 24V battery, depending on the application
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| Technical Characteristics |
| High voltage side |
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| HV-voltage range |
400 - 900 |
V |
| Low voltage side |
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| LV-voltage nominal |
28.0 |
V |
| LV-voltage range |
18 - 32 |
V |
| Performance |
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LV-continuous current
(@ Tcoolant = 65°C) |
100 |
A |
| LV-maximum current |
125 |
A |
Continuous power
(@ ULV = Unom ) |
2.8 |
kW |
Maximum power
(@ ULV = Unom ) |
3.5 |
kW |
| Efficiency typ. |
>91 |
% |
| Switching frequency buck/boost stage |
40-130 |
kHz |
| Switching frequency transformer stage |
200 |
kHz |
| Control |
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| Control bandwidth (3dB - point) |
~ 1 |
kHz |
| Control accuracy of LV-voltage (buck mode) |
< 0.2 |
V |
| Control accuracy of HV-voltage (boost mode) |
< 1.0 |
% |
| Mechanical and environmental conditions |
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| Cooling system |
Liquid (50% water, 50% ethylene glycol) |
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| Nominal flow rate |
4 |
l/min |
Pressure drop
(@ nominal flow rate) |
< 0.1 |
bar |
| Ambient temperature range (storage) |
-40 - +105 |
°C |
| Ambient temperature range (operation) |
-40 - +85 |
°C |
| Maximum coolant temperature |
65 |
°C |
| Ingress protection class |
IP65 |
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| Dimensions |
300 x 150 x 70 |
mm |
| Weight |
4.7 |
kg |
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Deutsch | English
