Control/Driver IC Offers Flexibility For Engine Control

Jul 9, 2008 5:25 PM

Allegro MicroSystems’ A3942 control/driver IC is designed to drive four n-channel MOSFETs in a high-side configuration with gate-drive outputs that use a current-source topology. This device contains the necessary blocks required to provide an efficient interface between the system controller and various high-current loads typically found in automotive engine control systems.

Device type: quad high-side gate driver for automotive applications
Input voltage range: 4.5 V to 60 V
Quiescent current: less than 10 μA in sleep mode
Features: eliminates the need for bootstrap capacitors; the four outputs can be controlled with either four parallel-input lines or through an integrated serial peripheral interface; interface allows software control of channel specific blanking times for short-to-ground detection and is used to output a wide range of diagnostics to the controller via a serial-data-out pin
Operating temperature range: -40C° to +125°C (ambient)
Packaging: 38-pin TSSOP
RoHS compliant? lead-free
Target applications: 12-V and 24-V engine control systems
Pricing: $1.87 in quantities of 1000
Availability: available now
Data sheet? yes www.allegromicro.com/en/Products/Part_Numbers/3942/3942.pdf