The TDK-Lambda EMI TCR20T125 is a 2500W single-output DC power supply delivering 20V at 125A with integrated RFI filtering for EMC compliance. This SCR phase-controlled unit combines low output ripple with tight voltage regulation and thermal stability across demanding industrial and electronic applications.
Technical Specifications
Output Performance:
• Output voltage: 20V DC
• Output current: 125A maximum
• Output power: 2500W
• Load regulation: <0.1% voltage variation (50–100% load); <0.05% below 50% load
• Temperature coefficient (voltage): 0.02%/°C of maximum rating
• Temperature coefficient (current): 0.03%/°C of maximum rating
• Dielectric withstand: 2500 V rms (primary to secondary and chassis)
Input Specifications:
• AC input: 208/220 VAC (190–253V range), 47–63 Hz
• Maximum current draw: 12 A per phase at full load
• Phase-to-phase voltage balance requirement: ±2% for ripple specification compliance
• Soft-start circuitry prevents magnetic inrush during power-on
Filtering & Noise Control:
Internal RFI filter uses ferrite toroidal chokes and VDE-listed "X" and "Y" capacitors to reduce conducted emissions. Output ripple remains low across the operating range.
– Key Features
• Constant voltage or constant current regulation with automatic crossover
• Internal and external control reference capability
• Fan-cooled with horizontal air ducting to minimize thermal coupling between adjacent units
• Thermostat protection on critical circuitry
• Phase rotation not required
– Operational Envelope
• Operating temperature: 0°C to 40°C (continuous duty, specification maintained)
• Derating: 10% current reduction at 50°C operation
• Storage temperature: −40°C to +85°C
– Typical Applications
Industrial power systems, electronic test benches, and processes requiring low-noise DC delivery with tight EMC performance. Suitable for environments demanding both voltage stability and conducted noise suppression.
