DESCRIPTION

· The TLE4973 is a high-precision, miniature coreless magnetic current sensor designed for AC and DC measurements.
· It features an analog interface and fast over-current detection output.
· The sensor avoids negative effects like saturation and hysteresis, common in open-loop sensors using flux concentration techniques.
· Its differential measurement principle ensures excellent stray field suppression, suitable for harsh environments.
· The device is highly configurable, allowing customization for various applications.
· User-programmable parameters such as OCD thresholds and sensitivity settings are stored in an embedded EEPROM.
· Device configuration can be performed in-situ through a one-wire UART based interface called Digital Control Diagnostic Interface (DCDI).
· The DCDI interface provides read/write access to internal registers, triggers diagnostic mode, and reads temperature, OCD, and safety status.
· It supports auto-addressing and can handle up to 8 slaves on one bus.

FEATURES

· High accuracy, scalable DC & AC current sensing up to ±132 A.
· 5 V supply voltage.
· Configurable differential analog output with ratiometricity option.
· ISO 26262 Safety Element out of Context for safety requirements up to ASIL B.
· Integrated current rail with typical 220 µΩ insertion resistance for ultra-low power loss.
· Smallest form factor, 8x8 mm SMD, for easy integration and board area saving.
· Very low sensitivity error and excellent stability of offset over temperature and lifetime.
· Galvanic functional isolation up to 1150 V VIORM with partial discharge capability of at least 1200 V.
· Differential sensor principle ensures superior magnetic stray field suppression.
· High bandwidth provides fast response time and low phase delay.
· Over-Current Detection with configurable threshold (max detection time < 1.0 µs).
· EEPROM with integrated charge-pump for in-system programming and end-of-line calibration.
· Digital control and diagnostic interface for temperature readout, safety status readout, and access to internal EEPROM.

APPLICATIONS

· General purpose electrical drives.
· Chargers and on-board chargers.
· PV inverters, smart circuit breakers, and Uninterruptible Power Supply (UPS).
· Over-load and over-current detection.
· Current monitoring and power supplies.