How to Select the Optimum Transient Surge Protection for EV On-Board Chargers Application Note
2024-02-21
●The automotive environment is one of the most severe environments for electronics. Today’s vehicle designs proliferate with sensitive electronics, including electronic controls, infotainment systems, sensing systems, battery packs, battery management systems, electric vehicle powertrains, and on-board chargers. In addition to the heat, voltage transients, and electromagnetic interference (EMI) in the automotive environment, the on-board charger must interface with the AC power grid, requiring protection from AC line disturbances for reliable operation.
●Manufacturers of protection components offer multiple components for protecting electronic circuits. Due to the connection to the grid, safeguarding the on-board chargers from voltage surges with unique components is essential.
●Littelfuse solutions focus on advanced overcurrent and overvoltage protection technologies, including MOV (Metal Oxide Varistor), TVS (Transient Voltage Suppressor), GDT (Gas Discharge Tube), and SIDACtor® protection thyristor components. The challenge for the design engineer is optimizing the component selection and determining the best combination of several technologies to reach the best fit in performance and price.
●A unique solution combines a SIDACtor and a Varistor (SMD or THT), reaching a low clamping voltage under a high surge pulse. The SIDACtor plus an MOV (SIDACtor+MOV) combination enables automotive design engineers to optimize the selection and, therefore, the cost of the power semiconductors in the design. These parts are needed to convert the AC voltage into the DC voltage to charge the vehicle’s on-board battery.
●Manufacturers of protection components offer multiple components for protecting electronic circuits. Due to the connection to the grid, safeguarding the on-board chargers from voltage surges with unique components is essential.
●Littelfuse solutions focus on advanced overcurrent and overvoltage protection technologies, including MOV (Metal Oxide Varistor), TVS (Transient Voltage Suppressor), GDT (Gas Discharge Tube), and SIDACtor® protection thyristor components. The challenge for the design engineer is optimizing the component selection and determining the best combination of several technologies to reach the best fit in performance and price.
●A unique solution combines a SIDACtor and a Varistor (SMD or THT), reaching a low clamping voltage under a high surge pulse. The SIDACtor plus an MOV (SIDACtor+MOV) combination enables automotive design engineers to optimize the selection and, therefore, the cost of the power semiconductors in the design. These parts are needed to convert the AC voltage into the DC voltage to charge the vehicle’s on-board battery.
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