Texas Instruments (TI) has introduced what it claims is the world’s most accurate Hall-effect sensors designed for high-voltage systems.
Additionally, the company has rolled out a portfolio of current shunt monitors that eliminate the need for external shunt resistors for non-isolated voltage rails.
Called TMCS1123, the Hall-effect current sensor has a reinforced isolation and accuracy over lifetime and temperature. The sensor offers accurate current measurements in high-voltage systems like electric vehicle (EV) chargers and solar inverters. Features of the TMCS1123 include:
- Reinforced isolation working voltage of 1,100 V DC
- Maximum sensitive error of ±0.75% with 50 ppm/° C drift over temperature
- Low propagation delay of 600 ns and bandwidth of 250 kHz
The high precision over lifetime removes the need to recalibrate equipment that reduces time-consuming and often costly maintenance, TI said.
EZShunt
In non-isolated systems up to 85 V and 75 ARMS, the EZShunt portfolio of devices is designed to simplify and reduce the need for an external shunt resistor. The technology provides a current-sensing solution that fits in a 1206 shunt resistor.
Features of the EZShunt portfolio include:
- Drift as low as 24 ppm/° C
- Reduce size of sensing solution as much as 84%
- High accuracy of 75-A
- Supports common-mode voltages up to 85 V
