Infineon Technologies TLE4973 XENSIV™ Coreless Current Sensors

Infineon Technologies TLE4973 XENSIV™ Coreless Current Sensors are high-precision, miniature, magnetic current sensors for AC and DC measurements with an analog interface and fast overcurrent detection output. A differential measurement principle allows stray field suppression for operation in harsh environments, and high configurability enables 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 Digital Control Diagnostic Interface (DCDI). The DCDI interface provides read/write access to the device’s internal registers and allows the device to trigger the diagnostic mode and to read temperature, OCD, and safety status. The sensors feature an auto-addressing functionality and can handle up to eight slaves on one bus.

Features

High accurate, scalable, DC and AC current sensing
Full scale up to ±34mT for current measurements above 1000A
5V supply voltage
Analog output
- Configurable differential for TLE4973-xE35x5-S0001 (including a ratiometricity option)
- Ratiometric single-ended for TLE4973-RE35x5-S0010
ISO 26262 safety element out of context for safety requirements up to ASIL B
Small form factor enables high power density
Very low sensitivity error over temperature and lifetime
Excellent stability of offset over temperature and lifetime
Differential sensor principle ensures superior magnetic stray field suppression
High bandwidth provides fast response time and low phase delay

Overcurrent detection with a configurable threshold (maximum detection time of <1.0µs)
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; provides temperature readout, safety status readout, read/write programming access to internal EEPROM, and control of diagnosis mode
Pre-calibrated over temperature with the possibility of in-system end-of-line calibration to compensate for system-level errors
AEC-Q100, Grade 0 qualified
RoHS compliant

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

Infineon Technologies TLE4973 XENSIV™ Coreless Current Sensors

Features

Applications

Block Diagram

Typical Application Schematic

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