The Sorensen DLM40-15 is a 600 W programmable DC power supply delivering 0–40 VDC at 0–15 ADC with exceptional output stability and low noise. Dual-mode operation (CV/CC with automatic crossover) accommodates both voltage and current regulation requirements. Zero Voltage Switching (ZVS) technology minimizes ripple to 2.5 mVrms and 15 mVp-p, critical for precision test and measurement applications.
Line regulation holds voltage to 0.005% of Vmax + 2 mV and current to 0.01% of Imax + 2 mA. Load regulation tightens further: voltage at 0.005% of Vmax + 2 mV, current at 0.02% of Imax + 5 mA. Long-term stability maintains ±0.05% maximum rating over 8 hours following a 15-minute warm-up. Temperature coefficients of 0.02%/°C (voltage) and 0.03%/°C (current) ensure predictable performance across the 0–50°C operating range.
Transient response recovers to rated voltage within 1 ms for 100%–70% or 70%–100% step load changes. Front-panel 10-turn potentiometers enable precise voltage and current setting, while dual 3½-digit LED displays show set-point or actual values. Standard analog programming accepts 0–5 VDC, 0–10 VDC, or 0–5 kΩ inputs; optional LXI-compliant Ethernet, RS-232C, or IEEE-488.2 interfaces support remote operation.
The 1U-high, half-rack-wide (8.5 inches) chassis accommodates high-density rackmount installations with zero top/bottom clearance requirement. Single-phase AC input ranges 90–132 VAC or 180–264 VAC (auto-ranging), 47–63 Hz, with typical 0.6 power factor at full load. Internal variable-speed cooling with over-temperature protection maintains safe operation in demanding test environments.
Technical Specifications
• Output: 0–40 VDC, 0–15 ADC (600 W max)
• Ripple & Noise: 2.5 mVrms; 15 mVp-p
• Line Regulation: Voltage 0.005% Vmax + 2 mV; Current 0.01% Imax + 2 mA
• Load Regulation: Voltage 0.005% Vmax + 2 mV; Current 0.02% Imax + 5 mA
• Stability: ±0.05% over 8 hours (after 15-min warm-up)
• Temperature Coefficient: 0.02%/°C (V); 0.03%/°C (I)
• Transient Response: 1 ms recovery for 100%–70% step load change
• AC Input: 90–132 VAC or 180–264 VAC (auto-range), 47–63 Hz, single-phase
• Dimensions: 1.75 in H × 8.5 in W × 17 in D (1U, half-rack)
• Weight: 9.7 lb (4.4 kg)
• Operating Temperature: 0–50°C (no derating)
– Key Features
• Constant voltage/constant current modes with automatic crossover
• Zero Voltage Switching for minimal noise and ripple
• Standard analog control (0–5 VDC, 0–10 VDC, 0–5 kΩ)
• Optional LXI Ethernet, RS-232C, or IEEE-488.2 remote interfaces
• Compact 1U rackmount form factor, no clearance spacing required
• Variable-speed fan cooling with over-temperature shutdown
– Typical Applications
• Precision DC test and characterization systems
• Component burn-in and stress testing
• Laboratory benchtop power sourcing
• High-density automated test equipment racks
– Compatibility & Integration
Multiple units support series operation up to 300 Vpk between output terminals and chassis. Parallel configurations (up to 4 units) employ active current sharing control for load distribution. Analog or digital interfaces integrate into existing ATE systems and remote monitoring architectures.
