EFUSE-48V100A(#1): SPST SSR, 48V, 100A Max with Adjustable Trip

With the steady increase in 48 V eMobility applications, semiconductor-based resettable fuses are quickly replacing mechanical relays and contactors, as well as traditional non-resettable fuses. The eFuse concept is an innovative new trend for protecting both the user and the hardware in high power applications. In a new reference design by Vishay, an eFuse featuring TrenchFET® MOSFETs was designed to handle continuous current up to 100 A. It has been designed to operate continuously at max. current with less than 14 W of losses, without requiring active cooling.

The design features a pre-charge function, continuous current monitoring, and overcurrent protection. The overcurrent protection can stop current flow through the eFuse in under 2 μs.

The Vishay eFuse has been designed to safely connect and disconnect a 48 V power source (typically a high energy battery pack) to any type of vehicle load using TrenchFet® Gen IV power MOSFETs as the primary switches, which can operate at up to 100 A continuously.

In addition to the adjustable current limit, another limit of 160 A has been hardcoded into the eFuse. If the load current exceeds this limit, the eFuse is immediately turned off to protect the power supply.

FEATURES

• Fast disconnect of loads in under 2 μs

• Pre-charge of DC-Link capacitors of power electronics

• Resettable fuse

• Adjustable current limit

APPLICATIONS

• Battery management systems

• EV test environments

• Solar installations

• Industry and home automation

• Industrial and server computing

• Networking, telecom, and base station power supplies

• Solid State Relay