Description
TLI4971 is a high precision miniature coreless magnetic current sensor for AC and DC measurements with analog interface and two fast over-current detection outputs.
Infineons well-established and robust monolithic Hall technology enables accurate and highly linear measurement of currents with a full scale up to ±120A. All negative effects (saturation, hysteresis) commonly known from open loop sensors using flux concentration techniques are avoided. The sensor is equipped with internal self-diagnostic feature.
Features & Benefits
● Integrated current rail with typical 225µΩ insertion
resistance enables ultra-low power loss
● Smallest form factor, 8x8mm SMD, for easy
integration and board area saving
● Single supply voltage, 3.1V to 3.5V
● High accurate, scalable, DC & AC current sensing
● Full scale up to ±120A
● Bandwidth greater than 120kHz enables wide range
of applications
● Low phase delay (< 48° at below 120kHz) for easy
closed loop control
● Very low sensitivity error over temperature (< 2.5%)
● Excellent stability of offset over temperature and
lifetime
● Integrated isolator provides high robustness to
voltage slew rates up to 10V/ns
● Galvanic functional isolation up to 1150V peak VIORM
● VISO 2500V RMS agency type-tested for 60 seconds
per UL1577
● Partial discharge capability of at least 1200V
● Differential sensor principle ensures superior
magnetic stray field suppression
● Two independent fast Over-Current Detection (OCD)
pins with configurable thresholds enable protection
mechanisms for power circuitry (typical 0.7µs)
● Ratiometric and non ratiometric analog output
● Fully calibrated
Target Applications
The TLI4971 is suitable for AC as well as DC current measurement applications:
● Electrical drives
● Current monitoring
● Photovoltaic & general purpose inverters
● Overload and over-current detection
● Chargers
● etc.