Lambda / TDK / EMI CS250EI

The TDK-Lambda EMI CS250EI is a 250 W modular switch-mode power supply engineered for industrial and commercial systems requiring multiple regulated outputs. It combines universal AC input (85–264 VAC, 47–440 Hz) with power factor correction compliant to EN61000-3-2, delivering up to six fully independent outputs with configurable voltage levels. The design integrates comprehensive protection—short-circuit recovery, overvoltage shutdown, and thermal safeguards—alongside remote sense capability on selected outputs. Forced-air cooling and conformal design support operation across 0 °C to +50 °C at full load, with derating from 50 °C to 70 °C.

## Technical Specifications

**Input**
• AC Input: 85–264 VAC, 47–440 Hz
• DC Input: 120–340 VDC
• Maximum Input Current: 5 A
• Inrush Current: 5 V outputs)
• Ripple and Noise: 1% peak-to-peak (>5 V); 50 mV peak-to-peak (≤5 V); 70% typical at 230 VAC, full load

## Key Features

• All outputs short-circuit protected with auto-recovery
• Overvoltage protection with automatic shutdown and restart
• Over-temperature protection on converter and regulators
• Remote sense on main board outputs 1 & 2 and output modules
• Leakage current: <800 μA at 264 VAC, 50 Hz

## Typical Applications

Industrial process control, test and measurement systems, distributed power architectures requiring isolated multi-voltage rails.

## Compatibility & Integration

Complies with EN55022 (Class B conducted, Class A radiated), FCC Class B/A, UL E135494, CSA LR91780-96, IEC/EN 60950-1, and CE Mark (73/23/EEC). Modular architecture permits custom output module selection. Cooling options include end-mounted or top-mounted fans; customer air versions available.