The magnetic current sensor uses the physics principle that current flowing through a conductor creates a magnetic b-field. Based on this principle, the TMCS1123 uses Hall-effect sensors that sense the amount of current that passes through the lead frame of the device and provide a proportional voltage output to an input current. Magnetic current sensors are isolated current-sensing designs – the TMCS1123 can support reinforced working voltages up to 1.1 kVDC and basic working voltages up to 2.0 kVDC. Hall-effect sensors are notorious for drifting across temperature and lifetime, manifesting as an output error. However, with Texas Instruments' signal chain expertise, the TMCS1123 has the best-in-class drift parameters of 0.5% maximum over lifetime and temperature.
What does TMCS1123 provide to a system?
Part Number | Automotive Qualified | Features | Maximum Continuous Current at 25°C | Applications |
---|---|---|---|---|
TMCS1123 | Automotive version in development | 1.1-kVDC reinforced working voltage
isolation, 500-ns overcurrent detection, Alert for device performance |
75 ARMS | Motor control, inverter and H-bridge current measurements, power factor correction, overcurrent protection, DC and AC power monitoring, EV charging stations |
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