The TDK-Lambda EMI TCR20S90 is a fan-cooled power supply module designed for demanding industrial and commercial applications requiring stable, regulated DC output with integrated electromagnetic interference mitigation. The unit features internal RFI filtering using ferrite toroidal chokes and VDE-listed X and Y capacitors, delivering exceptional line-conducted noise rejection and dielectric isolation.
Technical Specifications
Electrical Performance
• Output Regulation (Constant Voltage): ±0.1% of set voltage (50–100% load); ±0.05% below 50% load
• Temperature Coefficient — Voltage: 0.02%/°C of maximum output voltage rating
• Temperature Coefficient — Current: 0.03%/°C of maximum output current rating
• Operating Temperature: 0°C to 40°C continuous duty
• Storage Temperature: −40°C to +85°C
• Dielectric Withstand (Primary to Secondary and Chassis): 2500 V rms
• Input AC Range: 190–253 V (referenced from TCR series specifications)
• Soft-Start: SCR phase-in limiting to prevent magnetic inrush current
EMI Compliance
• VDE 875 Level N (line-conducted RFI reduction)
• VDE 871 Level A (line-conducted RFI reduction)
• RFI Filter: Ferrite toroidal chokes with VDE X and Y capacitors
Thermal Design
• Cooling Method: Forced-air fan with horizontal ducting to isolate thermal output from adjacent units
– Key Features
• Low output ripple and noise characteristics across operating range
• Master/slave configuration supports series or parallel operation
• Programmable output voltage and current set points
• Protected input, output, and programming terminals
• High efficiency at rated load conditions
– Typical Applications
Industrial power systems, laboratory instrumentation, telecommunications equipment, and precision electronic manufacturing requiring stable, filtered DC power with minimal EMI.
– Compatibility & Integration
The TCR20S90 shares programming architecture with TDK-Lambda three-phase TCR models, EMHP, and HCR series units, enabling standardized control interfaces in multi-unit installations.
