AC & DC Power Management Expertise
Precision Power Distribution & System Control Architecture
Astrodyne TDI is a global leader in designing and manufacturing custom Power Distribution Units (PDUs) tailored for mission-critical medical equipment, semiconductor fabs, industrial automation, and military applications.
With over six decades of power engineering expertise, we integrate high-efficiency AC/DC and DC/DC power supplies, high-attenuation EMI/EMC filters, and custom isolation transformers into compact, fully turn-key PDU platforms. From sub-kilowatt rackmount assemblies to multi-hundred-kilowatt cabinet installations, our PDUs ensure precise output regulation, system safety, and seamless remote communication.
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Platform Configurations
Engineered PDU Lineups for Global OEMs
Select from robust single-phase, three-phase, space-saving rackmount, or heavy-duty cabinet-style configurations engineered to deliver clean, protected electrical power directly to your critical loads.
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Single-Phase PDUs
Engineered for safe, flexible power management in clinical, laboratory, and high-reliability industrial systems. Features custom outlet configurations, transient surge protection, EMO emergency stop, and real-time remote monitoring.
Three-Phase PDUs
High-capacity power delivery systems engineered for Delta and WYE architectures. Designed for heavy industrial loads, military installations, and semiconductor fabs requiring active load balancing and low-impedance grounding.
Rackmount PDUs
Space-optimized 1U to 4U rackmount platforms equipped with specialized connector options (MIL-spec, Bus Bars, Molex, IEC). Integrates onboard circuit protection, line filtering, and smart telemetry.
Cabinet-Style Systems
Scalable high-power enclosures housing modular systems such as LiquaBlade™, MercuryFlex™, and Kodiak™ modules. Combines liquid or forced-air cooling with master power control panels.
Engineering Superiority
Integrated Value-Add Technical Capabilities
By standardizing on an Astrodyne TDI custom PDU, OEMs eliminate multi-vendor friction, reduce assembly labor, and guarantee system-level compliance upfront.
Power Conditioning & EMI Hardening
Our custom PDUs incorporate internal high-performance EMI filters and transient voltage surge suppressors (TVSS). This shields sensitive downstream electronics from power sags, line spikes, and high-frequency interference, ensuring full compliance with CISPR, FCC, and MIL-STD-461 EMC limits.
Voltage Transformation & Galvanic Isolation
Integrated AC/AC toroidal isolation transformers, AC/DC rectifiers, and DC/DC converters enable seamless power conversion. Low-leakage medical isolation designs comply with IEC 60601-1 3rd Edition (2×MOPP) safety standards for patient-connected environments.
Smart Power Monitoring & Telemetry
Advanced digital microcontrollers and sensors monitor voltage, current, total harmonic distortion (THD), and thermal conditions in real time. Systems support Modbus, CANbus, and Ethernet/SNMP protocols for automated alert thresholds and continuous uptime assurance.
Automated Control & System Safety Logic
Custom PDUs feature programmable relay logic, solid-state switches, breaker trip indicators, and Emergency Off (EMO) control interface logic to automatically disconnect power during system fault conditions or emergency shutdown sequences.
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OEM Supply Chain Acceleration
Why Global Procurement Leaders Choose Our Custom PDUs
Sourcing individual components—power supplies, noise filters, breakers, contactors, and harnesses—creates logistical complexity and increases failure risks during final system compliance testing. Astrodyne TDI delivers a fully tested, turn-key power distribution enclosure under one part number.
- Turn-Key Integration: Internal power conversion, EMI filtering, isolation magnetics, and harness wiring designed as a single module.
- SEMI F47 Compliance: Qualified ride-through capability for semiconductor processing equipment during grid line sags.
- Comprehensive In-House Testing: 100% automated functional testing, dielectric hi-pot safety testing, and thermal burn-in prior to delivery.
- Lifecycle Stability: Strict revision control and long-term component availability to protect decade-long equipment builds.
Certified Manufacturing Excellence
Strict Quality Control & International Standards
Our global design and manufacturing facilities adhere to rigorous international quality management systems, guaranteeing consistent unit-to-unit reliability.
ISO 9001:2015
General Quality Management
Full process control, traceability, and continuous process improvement across all engineering and production lines.
AS9100D
Aerospace Quality Standard
Stringent quality and safety verification protocols for defense, aviation, and mission-critical high-reliability applications.
ISO 13485:2016
Medical Device Quality
Dedicated quality framework for medical system components, ensuring compliance with global healthcare regulations.
Engineering FAQ
Power Distribution Unit Selection Guidance
Key technical considerations evaluated by our applications engineers when developing custom PDU solutions for OEM programs.
Astrodyne TDI provides end-to-end custom PDU engineering. We integrate AC/DC and DC/DC power modules, custom toroidal and isolation transformers, high-performance EMI filters, automated power switching relays, dynamic telemetry monitoring, emergency power off (EMO) safety circuits, and customized sheet metal or rackmount enclosures built to fit your mechanical envelope.
Our PDU designs are engineered for compliance with global standards, including IEC/EN/UL 62368-1 for industrial and IT equipment, IEC 60601-1 3rd Edition (2×MOPP) for medical patient environments, SEMI F47 for semiconductor sag ride-through, and MIL-STD-810G / MIL-STD-461 for defense systems.
We accommodate diverse input power configurations including single-phase AC (100V-240V), three-phase Delta (3-wire) and WYE (4-wire) inputs up to 480VAC, high-voltage DC bus inputs, Uninterruptible Power Supply (UPS) feeds, and dual-redundant power source switching systems.
Embedding high-attenuation EMI filtering directly at the main PDU entry point attenuates conducted emissions before noise can radiate throughout internal system cabling. This simplifies EMC compliance testing (CISPR 11/32, FCC Class A/B) and eliminates the need for external filter modules.
Need a Custom PDU Solution for Your Project?
Talk directly with our senior application engineers to review your electrical, thermal, and compliance requirements.