CG902 | Integrated airbag system IC

Sophisticated safety concept and extensive diagnostic routines

CG902 is essential to realize a compact, dual-chip airbag control unit only consisting of a microcontroller and system IC.

The IC provides 8 firing loops and two PSI5 sensor interfaces.

CG902 unites all peripheral system functions of an airbag control unit: Power supply for microcontroller, onboard sensors, and energy reserve, digital interfaces for peripheral sensors, safety controller for microcontroller monitoring, airbag deployment firing loops.

Benefits

Supports a wide range of microcontroller families

ISO-compliant design

Chip variants available from for system configurations from entry level to high-end

Target applications

Power supply for microcontroller, onboard sensors, and energy reserve

Digital interfaces for peripheral sensors

Safety controller for microcontroller monitoring

Technical Features


Type	Integrated airbag system IC
Package	TQFP128_ePad
Features	Enhanced and sophisticated safety concept: safety controller; 3 watchdogs; ESP sensor data can be included in safety concept Fully automated diagnosis: Monitoring of voltages (incl. VHx) and overtemperature, SVR diagnosis, built-in sensor test, CER diagnosis, power stage and squib diagnosis, cross-coupling diagnosis, connector capacitor diagnosis, STB and STG diagnosis 2 independent 7-bit firing current counters per channel (max time: 3.2 ms) PWM controlled GPIO
Firing loops	8 × 5 firing modes (incl. 1.2 A, 1.75 A and LEA)
Peripheral sensor interfaces	2 × PSI5 (V1.3)
Analog interfaces	10 x AIN, 2 x AIO
Interfaces	SPI, 32-bit (3.3 V), K-Line/LIN
VDD typ. [V]	3.3
VVAS typ. [V]	6.7
VVZP typ. [V]	14
VVER typ. [V]	23.75 or 33 (programmable)
Tj min [°C]	-40°C
Tj max [°C]	150°C

TQFP128 _ePad (14 × 14 mm)

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