BSC624: 250 A, 220-450 V, 12 V

Technical data

Voltage range HV 220-450 V
Nominal voltage LV 14.0 V
Voltage range LV 8-16 V
Continuous current LV 200 A
Max. current LV 250 A
Continuous power buck mode 2.8 kW
Max. power buck mode 3.5 kW
Efficiency 94.4 %
Ambient temperature range in operation -40 to +85 °C
Cooling system Liquid cooled
IP-protection IP65
Weight 4.8 kg

The BSC624-12 V is a bidirectional DC/DC converter with galvanic isolation between the high voltage and the low voltage circuit. It is particularly suitable for use in electric, hybrid and fuel cell vehicles. In buck mode the 12 V wiring system is supplied from the HV side with a current up to 250 A. Due to the bidirectionality and its versatile configuration options, the BSC624-12 V has a wide range of applications.

The BSC624-12 V is at the prequalified B-sample stage.


  • Bidirectional operation
  • Fully galvanic isolation between HV- and LV-circuit
  • Resonant topology ensures very low switching losses and excellent EMC behavior
  • Very high efficiency (94.4 %)
  • Very compact and light design
  • PARAM tool offers comprehensive configuration options and diagnostic function
  • CAN-bus controlled by default
  • Optional operation without CAN (CAN-less mode)
The device is based on a transformer stage working in a serial resonant manner, by means of which the galvanic isolation is realised. Furthermore, by means of two buck/boost converters working in a geared mode for the purpose of ripple reduction, the desired voltage can be set in the respective operating mode. With the resonant topology of the transformer stage and the auto commutation of the buck/boost converter, losses can be limited to a minimum and excellent EMC properties can be achieved. During the development of the device, a compact, vibration-resistant and light-weight construction was prioritised in order to enable the usage in almost all applications and installation Locations.

Are you interested? Please email us at: