PARIS Freescale Semiconductor announced it has developed two airbag system products for the Peripheral Sensor Interface 5 (PSI5) protocol, including an inertial satellite sensor family and a mixed signal analog IC.
Freescale said its PSI5 airbag system solutions include the MEMS-based MMA5xxxW satellite accelerometer portfolio and the MC33789 Airbag System Basis Chip (SBC).
The company claimed that the MMA5xxxW inertial sensor family enables smaller and more robust front and side airbag satellite solutions, and improved system reliability against parasitic vibrations due to Freescale’s overdamped transducer.
Compatible with the PSI5 rev 1.3 standard protocol, these inertial sensors can be easily integrated as part of an overall PSI5 airbag system, and also include a bus-switch drive enabling very cost effective daisy chain configurations.
The MMA52xxW X-Axis satellite inertial sensor family is available now for a suggested resale starting price of $2.99 in 10,000-piece quantities. The MMA51xxW Z-Axis satellite inertial sensor family is available now, with production quantities planned for third quarter 2010.
In parallel, Freescale explained that its MC33789 SBC is a mixed signal analog IC for airbag safety applications. It can be used to detect seat belt switch input states and communicate with remote crash sensors via PSI5 master interfaces to meet industry standards. The MC33789 SBC is suited for low to high-end airbag safety systems by allowing the designer to scale a design across a wide range of firing loops while providing enhanced safety and system reliability.
Freescale said the MC33789 airbag system basis chip is available now for a suggested resale price of $4.38 in 10,000-piece quantities.