The Keysight 6641A is a programmable 200 W DC system power supply delivering 0–8 VDC at up to 20 A. Designed for design verification and production test environments, it combines precise voltage and current control with low-noise outputs and fast crowbar protection. Programming accuracy of 0.06% + 5 mV (voltage) and 0.15% + 26 mA (current) supports demanding automated test applications. Voltage ripple measures 300 µV RMS and 3 mV peak-to-peak across 20 Hz–20 MHz.
Technical Specifications
• Output Voltage: 0–8 VDC
• Output Current: 0–20 A at 40°C; 18 A max at 50°C; 17 A max at 55°C
• Maximum Power: 200 W
• Programming Accuracy (25°C ±5°C): Voltage 0.06% + 5 mV; Current 0.15% + 26 mA
• Readback Accuracy (25°C ±5°C): Voltage 0.07% + 6 mV; Positive Current 0.15% + 18 mA; Negative Current 0.35% + 40 mA
• Ripple & Noise (20 Hz–20 MHz): Voltage RMS 300 µV, Peak-to-Peak 3 mV; Current RMS 10 mA
• Input Voltage Options: 87–106 VAC (6641A-100), 104–127 VAC (6641A-120), 191–233 VAC (6641A-220), 209–250 VAC (6641A-240); all at 47–63 Hz
– Key Features
• Fast crowbar and mode crossover protection circuitry for DUT safety
• Cascading protection—multiple units’ protection circuits can be networked to improve production yield
• GPIB (IEEE 488) interface with SCPI command support; up to 16 supplies per GPIB address via serial link
• Analog control inputs for voltage and current—ideal for noisy environments requiring immediate response
• Front panel programming and adjustable fan speed control to reduce acoustic noise
• VXIplug&play drivers for test system integration
– Typical Applications
• Automated test systems and design verification
• Production testing and characterization
• Laboratory bench applications requiring low-noise, programmable DC power
– Compatibility & Integration
SCPI-based remote control and VXIplug&play driver support enable straightforward integration into multi-instrument test racks. Analog control option accommodates legacy systems and environments where digital communication introduces noise.
