The TDK-Lambda JFS1500-48 is a 1500W single-output industrial power supply delivering 48V DC at 31.2A for demanding ITE applications. Built for global deployment, it accepts universal AC input from 85–265 VAC (47–63 Hz) and delivers 75% efficiency at 110 VAC with 0.99 power factor. The unit features active current sharing for parallel operation via single-wire connection, remote on/off control, and dual system-status signals (AC Fail and DC Good). Input transient protection meets EN61000-4 standards and handles surge, sag, and spike events. Hold-up time of 16 ms ensures continuity during brief supply interruptions, while transient response recovers within 5 ms for 25% load changes. Overcurrent protection trips at <110% with auto-recovery; overvoltage protection activates at 60V. Remote sense compensates for 0.25V drop per leg. Operating range spans −20°C to +70°C with linear derating above 50°C. The enclosed design incorporates internal fan cooling and meets UL508, UL1950, UL60950, CSA22.2 No.234, CSA22.2 No.60950, EN60950, IEC950, FM3611, and CE Mark approvals.
Technical Specifications
• Output: 48V DC, 31.2A, 1500W
• Input: 85–265 VAC, 47–63 Hz; 20A rms typical at 110 VAC
• Efficiency: 75% typical @ 110 VAC
• Power Factor: 0.99 typical (EN61000-3-2 compliant)
• Overcurrent Protection: <110% auto-recovery
• Overvoltage Protection: 60V auto-recovery
• Hold-up Time: 16 ms typical
• Transient Response: ±5 ms recovery for 25% load step
• Input Transient: EN61000-4 compliant
• Isolation: 2 kVAC input-to-ground, 3 kVAC input-to-output, 500 VDC output-to-ground
• Temperature: −20°C to +70°C operating; −40°C to +85°C storage
• Humidity: 10–90% RH non-condensing
• Weight: 6.0 lbs (net); 7.0 lbs (shipping)
– Key Features
• Single-wire parallel current sharing for N+1 redundancy configurations
• Remote on/off control (Low = OFF, Open = ON)
• AC Fail and DC Good status signals (open-collector, secondary-referenced)
• Remote sense with 0.25V per-leg compensation
• Remote voltage adjust via external resistor or voltage source
• Harmonic correction per EN61000-3-2
– Typical Applications
• Industrial control and automation systems
• Telecommunications infrastructure
• Data center backup and redundancy
• LED and lighting systems
• Mission-critical commercial equipment
– Compatibility & Integration
Parallel-capable via single-wire connection. Open-collector signals integrate with PLC, SCADA, and monitoring systems. Remote sense and adjust features enable precision voltage regulation across distributed load scenarios.
