KP204

Overview

XENSIV™ - KP204 pressure sensor for Side Crash and Pedestrian Impact Detection

The Infineon XENSIV KP204 is a pressure sensor for the detection of side crashes in passenger cars. In this application the pressure sensor is assembled in a door module located within the car’s side door. When the door is compressed due to a side impact, the KP204 provides a signal pulse which is proportional to the pressure change inside the door (Δp/p0). 

During the normal operation mode there is a continuous internal range check.

Summary of Features

  • Two-wire interface with on-chip current modulator for PSI5 communication
  • Fully PSI5 compliant with support for multiple modes
  • Synchronous or asynchronous data transmission
  • EEPROM for unique ID number, calibration and mode selection
  • Serial service interface for EEPROM programming
  • On-chip voltage regulator
  • Reverse polarity protection
  • Fully AK-LV29 and AK-LV38 compliant
  • Patented online diagnosis for pressure cells and circuitry
  • PRO-SIL™ support in line with IEC 61508 and ISO26262
  • Green SMD package
  • KP201 qualified for higher operating temperatures up to 125°C
  • KP204 with 4-hole lid supporting insect intrusion protection

Potential Applications

  • The KP204 is used to detect the pressure change inside a door during a side crash
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