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Active Discharge Circuit for 400 V Systems

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AD-400V-AC05AT

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Active discharge is a known method to discharge the stored energy in a capacitor (or any other energy storing element) in a controlled manner in which the system voltage can reach a safe value within a certain amount of time.

This reference design follows the design steps required to discharge a DC-Link bus voltage of 450 V to 60 V in less than 2 s for a 600 μF DC-Link capacitor.

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Active discharge is a known method to discharge the stored energy in a capacitor (or any other energy storing element) in a controlled manner in which the system voltage can reach a safe value within a certain amount of time.

This reference design follows the design steps required to discharge a DC-Link bus voltage of 450 V to 60 V in less than 2 s for a 600 μF DC-Link capacitor.

Reference Design Files

Reference Board

Datasheet

Selected

AD-400V-AC05AT

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High pulse load surface-mount wirewound resistors, carbon film MELF resistors, and thick film technology resistors

Low part counts isolated gate drive circuit without the need for an external power supply

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