LAM Research 810-069751-102 Power Supply Module – 810 Series

LAM Research 810-069751-102 Power Supply Module: Precision DC Regulation for Semiconductor Process Equipment

The LAM Research 810-069751-102 is a dedicated power supply module engineered for deployment within LAM Research semiconductor processing platforms, including Versys, Kiyo, and Flex series etch systems, as well as CVD (Chemical Vapor Deposition) process chambers. Within the control architecture of these tools, the power supply module occupies a foundational position: it conditions raw AC mains input into tightly regulated DC rails that feed RF match networks, electrostatic chuck (ESC) bias controllers, gas flow management boards, and endpoint detection subsystems. Voltage ripple and transient response characteristics of this module directly influence plasma ignition stability and process repeatability at the wafer level. A deviation of even ±50 mV on the ESC bias rail can shift clamping force by several percent, introducing wafer-level non-uniformity in etch depth. The 810-069751-102 is therefore not a peripheral component — it is a deterministic element in the process control loop.

The module carries revision suffix -102, distinguishing it from the -101 and -103 variants in the 810-069751 family. Revision -102 incorporates updated gate-drive circuitry for the primary switching stage, reducing switching losses at elevated ambient temperatures typical of enclosed equipment bays. The thermal derating curve of this revision extends usable output power by approximately 8% compared to -101 at 45 °C ambient, a meaningful margin in high-density rack configurations where airflow is constrained.

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Technical Parameters

Hardware Logical Analysis

The 810-069751-102 employs a phase-shifted full-bridge (PSFB) switching topology operating at a fixed frequency of approximately 100 kHz. Unlike conventional hard-switched half-bridge designs, PSFB achieves zero-voltage switching (ZVS) on the primary-side MOSFETs by exploiting the resonance between transformer leakage inductance and MOSFET output capacitance. This eliminates capacitive discharge losses at turn-on, which in hard-switched designs account for a significant fraction of total switching loss at high input voltages. The practical consequence is a flatter efficiency curve across the 100–240 V AC input range — critical for semiconductor fabs that operate on both 200 V (Japan/Taiwan) and 230 V (Europe/Korea) mains infrastructure.

The output stage uses synchronous rectification with low-Rds(on) MOSFETs in place of Schottky diodes on the +5 V and +12 V rails. At 350 W output, the conduction loss reduction from synchronous rectification versus Schottky diodes is approximately 4–6 W, which translates directly into reduced thermal load on the module’s internal heatsink and extended component life in thermally constrained enclosures.

EMC design follows a two-stage approach. The input filter stage incorporates a common-mode choke with a differential-mode capacitor network (X-capacitors) to suppress conducted emissions on the AC line, meeting EN 55032 Class A limits with margin. A second-stage LC filter on each DC output rail attenuates switching-frequency ripple below 50 mV pk-pk. The PCB layout routes high-current switching loops in tight, low-inductance configurations to minimize radiated emissions from the switching node — a design discipline that becomes especially important in the RF-dense environment of plasma etch chambers where stray emissions can couple into endpoint detection sensors.

The protection architecture is implemented in hardware rather than firmware, ensuring deterministic response times. Over-voltage protection (OVP) uses a dedicated comparator with a 10 µs response time, latching the PWM controller off and requiring a power cycle to reset — a deliberate design choice that prevents automatic restart into a potentially damaged load. Over-current protection (OCP) uses cycle-by-cycle current limiting via a current-sense resistor in the primary switching loop, clamping peak current before transformer saturation can occur. Over-temperature protection (OTP) uses a thermistor bonded to the primary-side heatsink, with a threshold set at 85 °C case temperature.

System Integration Benefits

• Deterministic rail stability under dynamic load: The PSFB topology maintains output voltage within ±2% during 50% load steps with a recovery time under 500 µs, ensuring that RF match network controllers and ESC bias circuits receive stable supply voltage during plasma ignition transients — the highest-stress event in the etch process cycle.
• Universal AC input eliminates site-specific variants: The 100–240 V AC input range allows a single module SKU to operate across North American (120 V), European (230 V), and Asian (200/220 V) fab infrastructure without hardware modification, simplifying global spare parts inventory management.
• Hardware-latching fault protection preserves process integrity: OVP and SCP faults latch the module off rather than auto-restarting, preventing repeated fault cycling that could damage downstream boards. Fault state is visible via a front-panel LED indicator, enabling rapid field diagnosis without instrumentation.
• Low ripple noise floor protects analog signal chains: Sub-50 mV pk-pk ripple on all rails prevents noise coupling into the analog front-ends of endpoint detection systems (OES, interferometry), which operate on signal amplitudes in the millivolt range. This directly supports process endpoint accuracy and reduces false-trigger rates.
• Synchronous rectification reduces thermal load in enclosed bays: Lower internal dissipation (≥88% efficiency) means less heat rejected into the equipment bay, reducing the thermal burden on the tool’s cooling system and extending the service interval of bay-level fans and heat exchangers.
• Keyed backplane connector prevents mis-installation: The proprietary polarized edge connector physically prevents incorrect module orientation or cross-installation with incompatible module types, eliminating a common source of field damage during maintenance operations.
• MTBF >80,000 hours supports predictive maintenance scheduling: The published MTBF figure (MIL-HDBK-217F, 25 °C, full load) provides a quantitative basis for spare parts planning and preventive replacement intervals in high-utilization fab environments where unplanned downtime carries significant cost.
• 12-month warranty with full traceability documentation: Each unit shipped from siemensplc.com is accompanied by a test report, photographic inspection record, and certificate of conformance, satisfying the documentation requirements of ISO 9001-certified fab procurement processes and enabling full lot traceability.

Quality Assurance & Global Logistics

Every 810-069751-102 unit dispatched from our Xiamen, China facility undergoes a structured incoming quality inspection protocol before entering stock. This includes visual inspection for physical damage, connector integrity verification, and a powered functional test confirming output voltage accuracy on all rails within ±1% of nominal. Units sourced from authorized distribution channels carry full manufacturer traceability; secondary-market units are subjected to additional electrical characterization including load regulation measurement and ripple noise quantification.

Packaging follows anti-static and shock-protection standards: each module is placed in a conductive foam-lined anti-static bag, sealed, and packed in a double-wall corrugated carton with foam corner inserts. This packaging configuration is validated to withstand the ISTA 2A drop and vibration test profile, ensuring the module arrives at destination in the same condition it left our facility.

International shipments are dispatched via DHL Express, FedEx International Priority, or UPS Worldwide Express, with typical transit times of 3–5 business days to North America and Europe, and 2–4 business days to Southeast Asia and Japan. Export documentation — including commercial invoice, packing list, and HS code declaration — is prepared in compliance with Chinese customs regulations and destination-country import requirements. For customers in regulated industries requiring additional documentation (Certificate of Origin, CITES, or end-user certificates), our logistics team can coordinate these on request.

In-stock units ship within 24 hours of order confirmation. For bulk orders or long-term supply agreements, contact our sales team to discuss consignment stock arrangements and priority allocation.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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