ECOMALBusiness Development, in collaboration with Vishay, has developed a reference design for a 400V (40kW)
circuit breaker. It is a SiC solution with high performance SiC semiconductor switches from UnitedSiC/Qorvo.
The goal is to provide a high-voltage alternative to mechanical relays
in order to safely isolate the high-voltage side from the rest of the
vehicle’s electrical system to prevent further damage.
Additional added value is the integrated current measurement,
double preload functionality, adjustable shutdown thresholds
and various monitoring functions in the event of a fault.
A digital device with I2C is available for configuration and data
transmission. The optional Vishay-ECOMAL MessWEB module supports direct
WEB access (CAN optional).
TOP SPECS OF THE REFERENCE DESIGN
Nominal input voltage: 400VDC
70% of the BOM are Vishay components for highest performance and
E-FUSE 400VDC loads up to 40kW, using UnitedSiC/Qorvo 750V SiC
TVS Diode for power line protection
Output and Input transient protection
Current sensing: 1% (bi-directional), Over current for up to 300μsec
Double Pre-Charge Function
Limitation of maximum load current
FR4 layer power stage board with passive cooling, at room
Power supply by 400VDC or separate 12VD
Full Application description for R&D
Full reference design documentation (BOM, Gerber, Schematic)
Optional Vishay-ECOMAL MessWEB Modul with WEB access
We will gladly send you the gerberfiles
(production data). Please do not hesitate to contact us in this regard.