ASML 130-127 PCB Artic (Articulation Control Board)

The ASML 130-127 is a printed circuit board dedicated to articulation control, commonly referred to as the "Artic" board. This board manages the fine positioning and tilt adjustments of reticle stages or wafer stages in ASML steppers, enabling precise alignment and leveling for optimal exposure results.

Technical Specifications

• Part Number: 130-127

• Type: Articulation control PCB

• Compatible Systems: ASML PAS 5000/2500 and earlier models

• Control Axes: Up to 3 axes (tip, tilt, and piston)

• Actuator Drivers: 3 x linear piezo drivers, ±150 V, 10 mA

• Feedback: Capacitive sensors (digital interface)

• Update Rate: 5 kHz per axis

• Communication: VME bus and dedicated serial link

• Power Supply: +5 V, ±15 V, +150 V (from separate supply)

• Temperature Range: 15°C–35°C

Functional Description

The board generates the high-voltage drive signals required for piezo actuators, which control the orientation of the stage. It reads the capacitive sensor outputs to determine the current position and applies a PID control algorithm to minimize error. The board also includes a self-calibration routine that compensates for sensor drift and actuator hysteresis.

Installation and Setup

Mount the board in a designated VME slot, ensuring that the high-voltage connectors are properly insulated. Connect the cable bundle from the stage sensors and actuators to the front panel. After physical installation, load the board’s configuration parameters (gains, offsets, and limits) from the system database. Perform a manual test of each axis using the service software.

Calibration and Tuning

Calibration involves applying known tilt angles and recording the sensor outputs to create a linearization curve. The tuning process uses a frequency sweep to determine the optimal PID coefficients. The ASML Artic Tuning Tool provides automated assistance. The calibration data is stored in EEPROM and backed up to the host computer.

Diagnostics and Maintenance

The board features diagnostic LEDs for each axis (green – in range, red – out of range). It also logs overvoltage and overcurrent events. Routine maintenance includes checking cable connections and verifying the high-voltage supply. The MTBF is estimated at 60,000 hours.

Integration with Stepper Control

The 130-127 works in conjunction with the main motion control board (e.g., 12456) to provide coordinated multi-axis motion. It receives setpoint updates from the main processor and reports actual positions. The board is essential for dynamic focus and leveling during scanning.

Environmental and Safety

This board is designed for cleanroom use and complies with RoHS. The high-voltage outputs are protected against short circuits. Proper grounding is mandatory to avoid electrical noise.

Technical Support and Documentation

ASML provides detailed installation, calibration, and troubleshooting guides. Spare connectors and actuator cables are available. Field engineers are trained in high-voltage safety procedures.

Conclusion

The ASML 130-127 PCB Artic is a critical component for achieving nanometer-level stage positioning. Its robust drive capabilities and precise feedback control ensure superior overlay accuracy.