The Sorensen DLM5-75 is a 375 W programmable DC power supply engineered for high-density rackmount applications demanding precise output control and low noise. Built into a compact 1U × half-rack chassis (44 mm H × 216 mm W × 432 mm D), it delivers 0–5 VDC at 0–75 A with Zero Voltage Switching (ZVS) topology to achieve ripple and noise levels comparable to linear supplies while maintaining high efficiency and fast load transient response. The unit operates from single-phase AC input (90–132 VAC or 180–264 VAC, auto-ranging, 47–63 Hz) and weighs 9.7 lb.
Technical Specifications
• Output: 0–5 VDC, 0–75 ADC, 375 W maximum
• Ripple and Noise: 2.5 mVrms ripple; 15 mV peak-to-peak noise
• Line Regulation: Voltage 0.005% of Vmax + 2 mV; Current 0.01% of Imax + 2 mA
• Load Regulation: Voltage 0.005% of Vmax + 2 mV; Current 0.02% of Imax + 5 mA
• Programming Accuracy (Ethernet): Voltage 0.1% of Vmax; Current 0.25% of Imax
• Programming Accuracy (GPIB): Voltage 0.2% of Vmax; Current 0.5% of Imax
• Overvoltage Protection: 5%–110% of Vmax adjustment range; 0.5% accuracy (Ethernet)
• Output Stability: ±0.05% of maximum voltage or current over 8 hours at fixed line, load, and temperature (after 15-minute warm-up)
• Temperature Coefficient: Voltage 0.02% /°C; Current 0.03% /°C of maximum output
• Remote Sense Drop: <1 V maximum
• AC Input Current: 11 A at 115 VAC; 6 A at 230 VAC
• Operating Temperature: 0–50°C
• Cooling: Internal variable-speed fans with over-temperature protection
– Key Features
• Front-panel 10-turn potentiometers for voltage and current adjustment
• 3.5-digit LED displays for set-point and actual values
• Local and remote control via push buttons
• Selectable analog programming: 0–5 VDC, 0–10 VDC, or 0–5 kΩ
• Optional Ethernet (M130/M131) and GPIB (M9G/M85) interfaces
– Typical Applications
Electronics manufacturing, RF device testing, power conversion research, and bench-top circuit development requiring stable, low-noise DC power in space-constrained environments.
– Compatibility & Integration
Supports analog control and optional network interfaces for system integration. Configurable programming accuracy and remote sensing accommodate diverse test and production workflows.
