3.5

Deployment drivers and diagnostics

•

12 high-side deployment drivers, 12 low side deployment drivers

•

Low-energy actuator (LEA) support available on 2 channels (6 and 7)

•

Common-return (CSRx) connection support available on 2 channel couples (2-3 and 4-5)

•

Independently controlled high-side and low-side FETs

•

User-programmable deployment options

–

Low current: 1.21 A minimum

–

High current: 1.76 A minimum

–

Programmable dwell time in 16 µs increments

–

Automatic dynamic deployment current profile

•

Configurable deployment current monitor feature

•

Deployment interruption in case of high-side short to ground and/or supply overvoltage

•

Squib/LEA resistance measurement

•

High and low-side FET tests

•

Open and shorts diagnostics, including between loop drivers

•

LEA diode presence/integrity diagnostics

3.6

Remote sensor interfaces

•

6 channel receiver, PSI-5 v2.3 compatible with SYNC pulse

•

Dedicated supply input pins for both satellite and SYNC pulse operation

•

Current limit with short circuit protection diagnostics

•

Auto-adjusting current trip points for each channel

•

Satellite data with parity and CRC, 10 bit, 16 bit and 20 bit messages, 125 k or 189 kbps

•

Satellite message error detection

3.7

DC sensor interfaces

•

9 integrated interfaces with current sense capability

•

Compatible with Hall-effect, resistive and switch sensors

•

Capability to perform 2 simultaneous measurements on two different channels (0-1-2-3 and 4-5-6-7-8

grouping)

•

Current limit protected output

•

Capability to inhibit passenger airbag loops via monitoring of 2 DC sensor channels (0 and 1)

3.8

General purpose low-side outputs

•

3 low-side drivers

•

ON-OFF mode and PWM 0-100% fine control

•

Diagnostics for short circuit protection and open load detection

•

Current limit protected

L9690

Deployment drivers and diagnostics

DB4806 - Rev 2

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