Vishay Active Discharge Circuit for 400V Systems

Vishay Active Discharge Circuit for 400V Systems features carbon film MELF resistors, thick film technology resistors, and high pulse load surface-mounted wirewound resistors. This 400V reference design follows the steps needed to discharge a DC-link bus voltage of 450V to 60V in less than 2 seconds for a 600μF DC-link capacitor. This active discharge circuit reference design from Vishay provides a reliable solution for discharging stored energy in 400V capacitors. The design is ideal for automotive applications and ensures the system voltage reaches safe levels within the required timeframes per legal and manufacturer standards.