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Electronic Circuit Breaker with Pre-Charge Based on 1200 V SiC MOSFETs

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This power board is capable of handling voltages up to 950 V and 20 A current. The circuit can be easily scaled up for high current ratings. In addition to the eFuse functionality, the circuit benefits from a pre-charge circuit connected in parallel with the main eFuse switch, which avoids inrush currents into external uncharged capacitors.

The power circuit is fully equipped with all the required feedback signals, including circuit current - which is measured by a Vishay low TCR shunt resistor - and the circuit voltage, which is measured by a low tracking error voltage divider.

Reference Design Files

Reference Board

Datasheet

This power board is capable of handling voltages up to 950 V and 20 A current. The circuit can be easily scaled up for high current ratings. In addition to the eFuse functionality, the circuit benefits from a pre-charge circuit connected in parallel with the main eFuse switch, which avoids inrush currents into external uncharged capacitors.

The power circuit is fully equipped with all the required feedback signals, including circuit current - which is measured by a Vishay low TCR shunt resistor - and the circuit voltage, which is measured by a low tracking error voltage divider.

Reference Design Files

Reference Board

Datasheet

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Reference

Functional Block Diagram

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Features

Low TCR shunt for precise current measurement

Low tracking error voltage divider

Robust I/O port providing ESD protection and freewheel capabilities

Fast switching speed

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All reference designs provided by Vishay Intertechnology, Inc. and its affiliates (collectively “Vishay”) are provided "as is". Vishay makes no warranties or representations with regard to the reference designs or use of the reference designs, express, implied or statutory, including accuracy or completeness. Vishay disclaims any warranty of title and any implied warranties of merchantability, fitness for a particular purpose, quiet enjoyment, quiet possession, and non-infringement of any third-party intellectual property rights with regard to Vishay’s reference designs or use thereof. Vishay shall not be liable for and shall not defend or indemnify buyers against any third-party infringement claim that relates to or is based on a combination of components provided in a Vishay reference design. In no event shall Vishay be liable for any actual, special, incidental, consequential or indirect damages, however caused, on any theory of liability and whether or not Vishay has been advised of the possibility of such damages, arising in any way out of Vishay reference designs or buyer’s use of Vishay reference designs.

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