The TDK-Lambda GEN 20-500 is a 10kW programmable DC power supply engineered for industrial, laboratory, and automated test equipment applications. Operating from 0 to 20V DC at up to 500A, this 3U rackmount unit delivers stable output with active power factor correction and multiple communication interfaces. Standard RS-232/RS-485 connectivity supports daisy-chain control of up to 31 units, while optional GPIB, LXI Ethernet, USB 2.0, and isolated analog interfaces enable flexible system integration. Advanced protection includes adjustable overvoltage, undervoltage lockout, and current foldback circuits. Non-volatile memory preserves all operational settings without battery backup.
## Technical Specifications
• Output: 0–20V DC, 0–500A DC
• Power: 10kW
• Input voltage: 208–240V single phase; 180–253V (3P208), 360–440V (3P400), 432–528V (3P480) three phase
• Input frequency: 47–63Hz
• Efficiency: 83–85% typical
• Power factor: 0.99 typical (single phase), 0.92–0.94 (three phase)
• Voltage ripple and noise: 8mV RMS, 60mV peak-to-peak (<20MHz), 0.06Vrms (5Hz–1MHz)
• Current ripple: 1Arms, 0.008Arms (5Hz–1MHz)
• Dimensions: 429mm W × 132.5mm H × 564mm D
• Weight: 44kg typical
## Key Features
• Constant voltage/constant current auto-crossover with active current sharing in parallel operation
• Adjustable OVP (up to 105% of rated voltage), UVL, and current foldback protection
• Encoder-based voltage and current adjustment with coarse and fine modes
• Front panel lockout prevents unauthorized adjustments
• Remote ON/OFF and independent enable/disable control
• Safe re-start or auto re-start modes selectable
• Analog programming via user-selectable 0–5V or 0–10V DIP switches
## Interfaces & Integration
• Standard: RS-232/RS-485 with multi-drop daisy-chain capability (up to 31 units)
• Optional: IEEE 488.2 GPIB, LXI compliant Ethernet, USB 2.0
• Optional: 0–5V/0–10V isolated analog programming, 4–20mA isolated interface
• LabVIEW and LabWindows drivers available
## Typical Applications
• Automated test equipment (ATE) systems
• Laboratory research and characterization
• Industrial process control and development
• Multi-unit parallel operation with synchronized current sharing
