Infineon Technologies XENSIV™ KP497 Smart Barometric Pressure Sensor
Infineon Technologies XENSIV™ KP497 Smart Barometric Pressure Sensor measure the pressure of air and gases across various industries and applications. This sensor combines sensing functions and conversion into an electrical signal in one integrated silicon device. The KP497 pressure sensor supports a typical BMS pressure range of 20kPa to 250kPa. This sensor provides a z-axis acceleration sensor and atemperature sensor. The KP497 pressure sensor features a multi-phase, low-power autonomous state in which the sensor regularly performs pressure and/or acceleration measurements and evaluates user-defined thresholds.
The KP497 pressure sensor is operated as a digital sensor via the I²C or 3-wire SPI interface. This sensor offers 3kB of flash memory for storage and high-accuracy pressure sensing. The KP497 pressure sensor is AEC-Q100, Grade 1 qualified, and is RoHS compliant. Typical applications include Automotive Battery Management Systems (BMS), industrial control, weather stations, and altimeters.
Features
- Pressure sensor with:
- 20kPa to 250kPa measurement range
- ±2kPa accuracy for absolute pressure measurement
- ±1kPa accuracy for measurement of pressure differences
- Integrated z-axis accelerometer with:
- -100g to 100g measurement range
- ±2g accuracy
- Highly flexible autonomous state providing wake-up for the host on threshold violation with:
- <10ms to >10min wide range of measurement intervals
- Threshold detection for absolute value, overall change, and rate of change for both pressure and acceleration
- Multi-stage pressure or acceleration monitoring or both
- Reconfiguration in the field
- Z-axis shock detection
- Supply current in autonomous state:
- 44μA at 50ms intervals
- 5.1μA at 300ms intervals
- 3kB non-volatile memory for storing customer data
- I2C and 3-pin SPI slave interface
- High accuracy pressure sensing
- High-quality solution
- Integrated pressure and 1-axis acceleration sensor
- Shock detection for battery damage estimation and driving vibrations
- ISO 26262-compliant (ASIL A)
Applications
- Automotive Battery Management System (BMS):
- Thermal runaway detection
- Battery shock monitoring as part of the economic evaluation of battery health
- Supports high security requirements in battery management systems
- Storage of battery passport data without additional external memory
- Simplified logistics through storage of configurations for multiple platforms at once
- Industrial control
- Weather stations
- Altimeters
Block Diagram
Dimension Diagram
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