SCHROFF MPS022 13100-203

Core Technical Specifications

• Input Range: Universal AC 90–264 VAC (50/60 Hz); DC backup 130–350 VDC
• Rated Total Output Power: 224 W
• Output Channels:
  • Primary: +5 VDC / 28 A
  • Auxiliary 1: +12 VDC
  • Auxiliary 2: -12 VDC
• Conversion Efficiency: ≥80% full load
• Output Ripple Noise: <10 mVpp on +5V main rail
• Form Factor: 6U height, 3HP width, 19-inch Eurocard plug-in
• Operating Temperature: 0 °C ~ +50 °C (natural convection cooling)
• Protection Circuits: Overvoltage (OVP), Overcurrent (OCP), Short-Circuit Foldback, Over Temperature Thermal Shutdown
• Communication & Parallel Function: Passive current-sharing bus for N+1 redundant parallel operation; Power OK / Fault LED status indicators
• EMC Compliance: EN 61000-6-2 industrial immunity standard

Function & Performance Features

1. Integrated Active Power Factor Correction (PFC) to minimize grid harmonic distortion, improve power utilization efficiency
2. Hot-swap pluggable design, allows module replacement without full system power cut
3. Low electromagnetic interference, no signal distortion to adjacent VME backplane boards
4. Automatic load balancing when multiple modules work in parallel, equal power distribution to extend service life
5. Built-in fault latch function: power failure state remains locked until manual power reset for easy fault diagnosis
6. Wide input voltage tolerance, adapts to unstable factory power grids and mobile industrial equipment power supplies

Working Principle

1. AC input passes EMI filter and active PFC circuit to rectify stable high-voltage DC bus
2. High-frequency forward switching topology converts high-voltage DC to isolated multi-channel low-voltage DC
3. Independent closed-loop voltage feedback for each output rail to maintain constant voltage under dynamic load fluctuation
4. Current-sharing bus signal synchronizes switching phase of parallel modules to eliminate output current imbalance
5. Real-time temperature, voltage and current monitoring chips trigger protective shutdown when parameters exceed threshold

Material Composition & Structural Characteristics

• Outer Chassis: Cold-rolled steel sheet with matte black anti-corrosion powder coating, shock-resistant
• Heat Dissipation Component: Large-area extruded aluminum fin radiator integrated on rear side for passive heat dissipation
• Internal PCB: High-temperature FR4 flame-retardant circuit board with tin-plated copper traces
• Connector Interface: Industrial-grade H15 VME standard gold-plated backplane connector, anti-oxidation and vibration-resistant
• Mechanical Frame: Standard Eurocard aluminum guide rail frame, matched with SCHROFF 6U series subracks

Installation Requirements

1. Must be installed inside standard 19-inch 6U SCHROFF VME subrack, fixed via front panel locking screws
2. Maintain minimum 20 mm vertical clearance above and below module for natural air convection; no external fan blocking radiator fins
3. Backplane wiring must strictly separate power cable and signal cable to avoid cross-interference
4. Parallel redundant installation requires unified current-sharing bus wiring between all power modules
5. Ground wire must connect module ground terminal to rack protective earth for surge protection

Application Scenarios

• Military embedded VME control cabinets
• Industrial automated test equipment (ATE)
• Railway vehicle on-board control systems
• Medical imaging equipment rack power supply
• Aerospace ground test simulation platforms
• Factory process monitoring VME industrial computers

Usage Precautions

1. Do not operate beyond 50 °C ambient temperature; high temperature will drastically shorten electrolytic capacitor lifespan
2. Strictly prohibit reverse connection of AC/DC input terminals, will cause permanent internal circuit burnout
3. When replacing hot-swap modules, wait 30 seconds after pulling out for internal residual charge discharge
4. Regularly clean aluminum radiator dust every 3–6 months in dusty workshop environments
5. Avoid installation near strong electromagnetic equipment such as high-power inverters and welding machines
6. N+1 redundant parallel groups cannot exceed 8 units simultaneously to prevent current-sharing bus overload