The Lambda TDK-Lambda EMI EMS6-400-2-D is a programmable switch-mode DC power supply engineered for laboratory testing, burn-in operations, and sensitive electronic applications demanding strict electromagnetic compatibility. Operating as a constant voltage/constant current source with automatic crossover, this unit delivers precise regulation across both voltage and current with standard soft-start functionality.
## Technical Specifications
**Electrical Performance**
• Voltage stability: maximum 0.05% deviation over 8 hours under constant line, load, and temperature
• Temperature coefficient (output voltage): 0.02% per 1°C of rated output
• Temperature coefficient (output current): 0.03% per 1°C of rated output
• Transient response: 650 microseconds for 30% load step below 20V; Vmax/20 for units above 20V
• Ripple and noise: RMS ripple approximately 30% of P-P carrier ripple
**Input Configuration**
• Input voltage: 190–250 Vac (single-phase or three-phase, depending on model)
• Phase rotation not critical
• Higher voltage inputs (380 Vac and above) require Wye configuration
• Units with -CE marking: 230 Vac single-phase connection
**Output Specifications**
• Constant voltage and constant current with automatic crossover
• Ripple option: Reduced ripple (40 mV P-P carrier) available up to 40 Vdc with EMS II prefix designation
## Key Features
• Fully programmable via analog interface or optional RSTL digital interface
• Soft-start standard on all models
• Switch-mode topology for high power density
• EMC tested to EN 50081-1 and EN 50081-2 standards (models with -CE suffix)
## Typical Applications
• Laboratory test environments
• Burn-in testing operations
• Sensitive electronic equipment requiring EMC compliance
• Industrial and scientific instrumentation
## Compatibility & Integration
Optional RSTL digital interface enables system integration and remote programming. Analog programming input standard. EMC compliance verified for standard industrial environments; additional shielding recommended in high ambient RF noise conditions.
