The Sorensen XPH 20-20 is a programmable benchtop DC power supply delivering 0–20V at 0–20A (400W maximum). It combines switch-mode pre-regulation with linear post-regulation to achieve low-noise performance equivalent to all-linear designs while maintaining high efficiency. The unit operates in constant voltage (CV) and constant current (CC) modes with automatic crossover and real-time mode indication.
Technical Specifications
• Output: 0–20V, 0–20A, 400W maximum
• Input: 110–120 VAC or 220–240 VAC ±10%, 50/60 Hz (factory-selectable)
• Consumption: 800 VA
• Line Regulation: <0.01% for 10% line voltage change
• Load Regulation: <0.01% for 90% load change
• Ripple and Noise (20 MHz bandwidth): Typically <2 mVrms, <10 mVpp
• Output Impedance: 10 kΩ (CC mode)
• Cooling: Fan-assisted convection
• Voltage Display Accuracy: 0.3% ± 1 digit; Current: 0.6% ± 1 digit
• Display Update: 4 Hz refresh rate
– Key Features
• Separate 14 mm LED voltage and current meters with near-instantaneous response
• Coarse and fine voltage controls with logarithmic current adjustment for precision low-current operation
• Switchable remote sense capability
• Analog and digital remote control interfaces
• Automatic CV/CC mode crossover with status lamps (Output ON, Constant Current, UNREG)
• Preset voltage/current display with output disabled
• Individual output ON/OFF switch
– Typical Applications
Research and development, automated test environments, component characterization, and circuit validation requiring stable, low-noise DC power with programmable control and remote operation capability.
– Compatibility & Integration
Analog and digital remote control options enable integration into automated test systems and multi-instrument setups. Switchable remote sense supports compensation for voltage drops in load distribution networks.
