The Lambda / TDK / EMI EMS55-90-2-D is a switch-mode DC power supply engineered for industrial and laboratory test applications requiring stable, regulated output with integrated protection. It delivers constant voltage/constant current operation with automatic crossover, supported by overvoltage, overcurrent, and short-circuit protection circuitry.
## Technical Specifications
**Input Power**
• Input voltage: 85–265 VAC (47–63 Hz) or 120–330 VDC
• Typical input current: 9.6 A @ 100 VAC, 5.0 A @ 200 VAC
• Inrush current: 20 A @ 100 VAC, 40 A @ 200 VAC
• Power factor: 0.98 typ. @ 100 VAC, 0.95 typ. @ 200 VAC
**Output Regulation**
• Voltage mode: <0.1% deviation across 100% load change
• Current mode: <0.1% deviation across 100% load change (full load to short)
• Line regulation: Maximum 0.01% of rated output voltage + 2 mV
• Ripple and noise: <0.1% of rated output voltage
**Programming & Control**
• Fully programmable via analog interface
• Optional RSTL digital interface for system integration
• Voltage programming: 0–100% (user-selectable 0–5 V or 0–10 V inputs)
• Programming accuracy and linearity: ±0.5% of rated output voltage
## Key Features
• Overvoltage protection (OVP) standard on models up to 300 VDC output
• Constant-current foldback protection for overcurrent events
• Short-circuit protection integrated
• Forced-air cooling with long-life fans for extended operation
• High efficiency design optimized for industrial duty cycles
## Operating Environment
• Operating temperature: 0–70°C (1% derating per degree Celsius above 50°C)
• Storage temperature: -55–85°C
## Typical Applications
• Industrial power distribution and equipment testing
• Laboratory burn-in and characterization workbenches
• Burn-in test systems requiring precise CV/CC control
• OEM integration in test and measurement systems
