SILICON LABS SI8501-C-GM

The Si85xx products are unidirectional AC current sensors with full-scale ranges of 5A, 10A, and 20A. The Si85xx products are ideal upgrades from older current sensing technologies, offering advantages in size, performance, and cost compared to current transformers, Hall-effect devices, DCR circuits, and other methods. The Si85xx features extremely low losses, with a series resistance of less than 1.3mΩ and series inductance of less than 2nH in the sensing path at 25°C. The current sensing terminals are isolated from other package pins, with isolation ratings of up to 5kV_RMS available depending on the safety certification level.

• Single-chip AC current sensor
• Low loss: primary series resistance < 1.3mΩ, inductance < 2nH
• Leading-edge noise suppression — no leading-edge blanking required
• "Ping-pong" output version allows a single Si85xx to replace two current transformers in full-bridge designs
• Available in 5A, 10A, and 20A full-scale versions
• Initial accuracy ±5%
• Input frequency range: 50kHz ~ 1MHz
• FAULT output for operational safety
• Minimum output 2V_PP at full scale
• High-side or low-side current sensing
• Compact 4×4×1mm QFN package (1kV_RMS isolation)
• 20-pin wide-body SOIC package (5kV_RMS isolation)
• Operating temperature range: -40°C ~ 125°C
• UL/VDE/CSA certified

• Power Supply
• Motor Control
• Lighting Equipment
• Industrial Equipment