DESCRIPTION

· TLE4973 is a high precision miniature coreless magnetic current sensor for AC and DC measurements with analog interface and fast over-current detection output.

· It avoids negative effects like saturation and hysteresis known from open loop sensors using flux concentration techniques.

· The differential measurement principle ensures superior stray field suppression for operation in harsh environments.

· High configurability allows customization for various applications, with user-programmable parameters 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).

FEATURES

· High accurate, scalable, DC & AC current sensing with full scale up to ±34 mT for current measurements above 1000 A.

· 5 V supply voltage with configurable differential analog output (including ratiometricity option).

· ISO 26262 Safety Element out of Context for safety requirements up to ASIL B.

· Small form factor enables high power density with very low sensitivity error over temperature and lifetime.

· Excellent stability of offset over temperature and lifetime with differential sensor principle ensuring superior magnetic stray field suppression.

· High bandwidth provides fast response time and low phase delay with Over-Current Detection featuring configurable threshold (max detection time < 1.0 µs).

· EEPROM with integrated charge-pump for in-system programming and end-of-line calibration without additional circuitry.

· Different package solutions for optimal system integration in different wiring schemes.

· Digital control and diagnostic interface providing temperature readout, safety status readout, read/write programming access to internal EEPROM, and control of diagnosis mode.

· Pre-calibrated over temperature with possibility of in-system end-of-line calibration to compensate system-level errors.

APPLICATIONS

· Main and auxiliary electrical drives.

· Over-load and over-current detection.

· Battery main switch.

· Smart circuit breakers.

· PV inverters.

· Current monitoring and power supplies.