Melexis Expands Pressure Sensor Family
Melexis has expanded its Triphibian pressure sensor family, with three new low-pressure variants that support configurable measurement as low as 2 bar. The MLX90830, MLX90833, and MLX90834 pressure sensors measure both gas and liquid pressures, targeting the thermal management loop for electric vehicles (EVs) and AI data center liquid cooling.
The existing Triphibian pressure sensor family supports pressure measurement up to 70 bar for demanding applications including refrigeration loops and oil measurement. The new low-pressure devices now extend the portfolio to media such as coolants, thanks to their excellent glycol compatibility, according to Melexis.
These automotive-grade pressure sensors offer protection against overvoltage up to 40 V and reverse voltage down to -40 V, and provide down to +/-0.5% full scale lifetime accuracy. The devices have been developed as a Safety Element out of Context (SEooC) under ISO 26262, supporting up to ASIL B system integration.
Adding reliable pressure sensing in low-pressure environments remains challenging with integration challenges and module-level calibration requirements when using conventional MEMS or ceramic sensing, Melexis said, particularly for measurements across gas, liquid, and frozen media in EV battery thermal management and liquid cooling in data centers.
To address these challenges, the low-pressure Triphibian variants bring gas, liquid, and frozen media pressure sensing technology to applications with a 2 or 4 bar operating range. The devices combine a unique suspended-cantilever MEMS pressure sensing element with signal processing, conditioning, and an output driver in a factory-calibrated SOIC16 wide-body package. Each sensor is calibrated across multiple pressure and temperature points. This simplifies the integration of pressure sensing into compact low-pressure system designs.
The package-level integration enables the devices to be used in standalone pressure modules or directly integrated into larger system assemblies like pumps or coolant distribution units, allowing pressure to be measured closer to the point where it matters, Melexis said. Other benefits included reduced calibration and mechanical integration complexity.
The new devices provide analog, SENT, and LIN options with the digital version supporting on-chip temperature information and the option to connect an external NTC where pressure and temperature data are required. The devices include the MLX90830 (analog), MLX90833 (LIN), and MLX90834 (SENT). Options for SPI and I²C are expected in 2027.
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