Melexis claims the primary automotive-grade surface-mount (SMD) far-infrared (FIR) temperature sensor designed for temperature monitoring of essential elements in electrical car (EV) powertrain purposes. These embrace inverters, motors, and heating, air flow, and air con (HVAC) programs.
The MLX90637 gives a number of benefits over unfavourable temperature coefficient (NTC) thermistors which have historically been utilized in these programs, the place pace and accuracy are essential, Melexis mentioned.
These benefits embrace eliminating the necessity for guide labor related to NTC options because of the SMD packaging, which helps automated PCB meeting and delivers value financial savings. As well as, the FIR temperature sensor with non-contact measurement ensures intrinsic galvanic isolation that helps to reinforce EV security by separating high- and low-voltage circuits, whereas the inherent electromagnetic compatibility (EMC) eliminates typical noise challenges related to NTC wires, the corporate mentioned.
Key options embrace a 50° subject of view, 0.02°C decision, and quick response time, that are fitted to purposes akin to inverter busbar monitoring the place temperature should be rigorously managed. Sleep present is lower than 2.5 μA. and the ambient working temperature vary is -40°C to 125°C.
The MLX90637 additionally simplifies system integration with a 3.3-V provide, manufacturing facility calibration (together with publish calibration), and an I2C interface for communication with a number microcontroller, together with a software-definable I2C handle by way of an exterior pin. The AEC-Q100-qualified sensor is housed in a 3 × 3-mm bundle.
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