Infineon Technologies XENSIV™ TLE4978 High-Bandwidth Current Sensor
Infineon Technologies XENSIV™ TLE4978 High-Bandwidth Current Sensor, based on Hall-effect and coil sensing elements, with user-configurable overcurrent detection (OCD) and zero-crossing detection (ZCD). Infineon's well-established and robust magnetic sensing technology enables accurate and highly linear measurement of currents with a full-scale current up to ±67.5A. These sensors avoid all negative effects commonly observed with open-loop sensors using flux-concentration techniques, such as saturation and hysteresis. It provides a fast and accurate solution for measuring high-frequency currents in DC-DC converters and other switch-mode power supply applications.
These features make TLE4978 ideally suited for current transformer and shunt replacement in high-voltage, basic applications. The low-profile, surface-mount DSO-16 wide-body package of TLE4978 allows easy implementation in a high-voltage environment. The fully integrated package with an internal copper conductive path has a typical resistance of 0.55mΩ, providing low power loss. The current flowing through the copper conduction path generates a magnetic field; the IC senses this field and converts it to a proportional voltage. The differential current measurement principle enables stray-field suppression for operation in harsh environments.
Features
- High bandwidth of 9MHz
- Current measurement range ±56Apk
- Supply voltage of 5V
- 100ns response overcurrent detection
- 80ns delay zero-crossing detection
- -40°C to 150°C operating range (Grade 0)
- ASIL-B-classified
- DSO-16 300mil package
- Offers both basic and reinforced isolation
- Extremely high bandwidth for versatile use
- Separated output for better performance
- Fast zero-current crossing detection
- High accuracy over temperature/lifetime
- Extremely low noise for improved accuracy
- Easy integration into various designs
- Protects SiC, GaN, MOSFET, and IGBT switches
- Programmable OCD and ZCD thresholds
Applications
- Server power supply units (PSU)
- DC-DC converter high-voltage
- On-board charging (OBC)
- General-purpose motor drive
- Photovoltaic
Additional Resources
Functional Block Diagram
