Barometric (BAP) & Manifold (MAP) sensors Absolute pressure sensors (MAP and BAP) - highest accuracy and precision on the smallest footprint and energy bill
Infineon absolute pressure sensors offer high pressure accuracy, functionality, and automotive qualification for applications in the automotive industry.
Automotive Barometric Absolute Pressure sensors (BAP sensors) and intake Manifold Absolute Pressure sensors (MAP sensors) are two types of sensors used within a range of operational applications and safety features in vehicles today. Manifold Absolute Pressure sensors detect the pressure of the intake air to the combustion engine for optimized operation. They are available as pressure-only devices or with an optional external temperature sensor. Barometric pressure sensors are used for engine control unit (ECU) management, seat comfort, and battery pressure sensing. Infineon’s range of sensors provide an accuracy of 1.0 kPa over a large temperature range alongside the ratiometric analog voltage output proportional to the applied pressure.
Bars in MAP Sensors
MAP (Manifold Air Pressure) sensors are commonly used in a wide range of automotive applications within diesel, gasoline, and 2-wheeler (motorcycle) engines, providing information to the engine’s electronic control unit (ECU). The purpose of a manifold absolute pressure sensor is to measure the range of pressure within an engine to optimize fuel injection. The normal pressure range of a MAP sensor is between 1 and 4 bar. 2-wheeler applications or non-turbo car engines typically have a pressure range of 1-2 bar, whereas a pressure range of up to 4 bar is used for turbo-charged engines.
Analog and digital MAP sensors
MAP automotive sensors are available in both digital and analog designs for different applications. Analog MAP sensors produce a ratiometric analog voltage output proportional to the applied pressure, while digital MAP sensors use a digital communication protocol. Our range of analog MAP sensors offers excellent accuracy of up to 1.0 kPa over a large temperature span. These features, among others, ensure our manifold absolute pressure sensors (MAP) function accurately with fast response times in any automotive application.
Infineon’s range of digital MAP sensors provides cutting edge self-diagnosis and power-down features for optimal power consumption and problem identification. Alongside integrated temperature sensors and real 10-bit temperature resolution, these features ensure superb functionality in automotive vehicles.
Turbo MAP sensors
Turbo MAP sensors (also known as turbo boost MAP sensors) are primarily used in diesel or gasoline turbo engines. The function of this type of manifold absolute pressure sensor is to measure the pressure of the turbocharging system in the engine. Infineon’s range of digital turbo MAP sensors can achieve very high accuracy over a pressure range of 10 kPa to 400 kPa and provide the fast measurement and communication of possible malfunctions or leakages in the engine.
Digital turbo MAP sensors use the single edge nibble transmission (SENT) protocol for communication and offer the use of an external temperature sensor directly connected to the turbo MAP sensor (with a negative temperature coefficient or NTC).
BAP sensors (Barometric Absolute Pressure sensors) are commonly used within automotive applications as ECU management and seat comfort. Additionally, the battery pressure sensor is an emerging application for these types of sensors, as the pressure inside the electrical vehicle battery is required to be monitored for fast and robust detections of battery failure and danger for the occupants and the environment.
BAP automotive sensors are available in both digital and analog designs for different applications. Analog BAP sensors produce a ratiometric analog voltage output proportional to the applied pressure, while digital BAP sensors use the digital SPI communication protocol. Our range of analog and digital BAP sensors offers excellent accuracy of up to 1.0 kPa over a large temperature span and an available pressure range from 40kPa to 200kPa. Moreover, our digital BAP sensors provide sensor temperature information and offer advanced power modes and sensor diagnosis features. These features, among others, ensure our barometric absolute pressure sensors function accurately with fast response times in any automotive application.
In addition to automotive applications, manifold and barometric pressure sensors provide extreme value to both industrial and consumer applications.