The Lambda/TDK EMI EMS30-series is an encapsulated AC-DC power supply engineered for industrial, embedded systems, and laboratory test and burn-in applications. These units accept wide-range AC input with stable DC outputs, integrated overvoltage protection (on models ≤ 300 VDC), adjustable overcurrent limiting, and short-circuit protection. Standard soft-start circuitry minimizes AC inrush current during turn-on and power reapplication. Constant voltage/constant current operation with automatic crossover, remote sensing, and fast transient response make these supplies suitable for precision test benches and embedded integration in space-constrained designs.
## Technical Specifications
**Input**
• Voltage: 85–265 VAC (standard); 105–125 VAC or 190–253 VAC (600 W / 1000 W single-phase); 170–265 VAC (3-phase 208 VAC); 342–460 VAC (3-phase 400 VAC); model-specific ranges up to 374–456 VAC
• Frequency: 47–63 Hz
**Output**
• Power: 30 W to 5000 W (model dependent)
• Voltage: 0–15 VDC to 0–40 VDC (EMS30 range)
• Current: Up to 165 A (model dependent)
• Efficiency: 70–87%
• Line Regulation: 0.1%
• Load Regulation: 0% at 100%
• Ripple & Noise: 75–250 mV peak-to-peak
• Response Time: 650 µs (20 VDC models)
**Protection & Control**
• Overvoltage Protection: Standard (models ≤ 300 VDC output)
• Overcurrent Protection: Adjustable current limit
• Short-Circuit Protection: Yes
• CV/CC Operation: Automatic crossover
• Soft Start: Standard on all EMS models
• Remote Sensing: Standard
## Key Features
• Compact encapsulated design for embedded and OEM integration
• Wide input voltage acceptance across single-phase and three-phase configurations
• Fast transient response (650 µs settling)
• Adjustable output current limiting for custom protection schemes
• Soft-start reduces AC line stress on power-up
## Typical Applications
• Industrial power conditioning and control systems
• Laboratory test and burn-in stations
• Embedded DC supply for distributed architectures
• Precision measurement and instrumentation
## Compatibility & Integration
Remote sensing capability enables compensation for load-side voltage drop. Constant current mode supports battery charging, electroplating, and current-source applications. Wide input ranges accommodate global power standards and generator-backed supplies.
