Astat Card

The DATX100 is a pulse transformer board used in ABB high-power drives to isolate and transmit gate firing pulses to the drive's power semiconductor devices (IGBTs or thyristors). It takes low-voltage control pulses from the drive's control logic and converts them via pulse transformers into high-isolation gate drive signals, ensuring safe firing of the power devices while protecting the control circuitry. The board supports high-frequency pulse transmission (typically 10 kHz to 100 kHz range) to accommodate fast switching devices. With multiple miniature pulse transformers on board, the DATX100 can drive several gate channels in parallel, maintaining signal integrity through galvanic isolation. It is powered by the drive's internal supply and usually mounts near the power section to minimize propagation delay. The board is engineered for high efficiency and low pulse distortion, using modern high-frequency transformers that reduce size and losses. The DATX100 board significantly contributes to the reliability of the drive by electrically separating the low-voltage control system from the high-voltage inverter output, preventing transients from feeding back while delivering precise timing for device switching.