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SiC MOSFETs for Bridge topologies in three-phase power conversion - issue 6/2019
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Power Electronics Europe News
 
MOSFETs protect vehicle ECUs against reverse-battery connections

The DMP4015SPSQ MOSFETs allow current to flow when the battery is correctly connected, and blocks it when the battery is accidentally connected in the reverse direction. Driving this device only requires a minimal number of passive components, says Diodes. By comparison N-channel MOSFETs require a charge pump to provide the gate drive voltage. Eliminating the switching topology of a charge pump also avoids issues with EMI emissions.

The MOSFET is 100% unclamped-inductive switch tested to withstand the worst-case ISO7637 energy pulse that would occur if the supply was disconnected while powering an inductive load. The low RDS(on) is less than 11mΩ, to minimise power loss and resulting in lower temperature operation.The parallel configuration of several MOSFETs can further reduce power losses, by a factor of n2, says the company.

The MOSFET is offered in a PowerDI5060 package, TO52 DPAK (the DMP4015SK3Q) and SO-8 package (the DMP4015SSSQ)

 




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