Automotive qualified high-speed, low-side driver family boosts efficiency, simplifies design

August 20, 2013 // By Paul Buckley
Fairchild Semiconductor has introduced the FAN31xx_F085 and FAN32xx_F085 series of high-speed, low-side automotive qualified gate drivers which offer flexibility for power supply and other high-efficiency MOSFET switching applications.

The devices provide a wide selection of feature and performance combinations to create compact, efficient and reliable designs.

The AEC-Q100 qualified drivers are available in an SO8 package with a choice of TTL or CMOS input thresholds. This ensures the best possible design compatibility. The drivers have two inputs for each channel (either Dual-input (+ and – logic), Inverting and Enable, or Non-inverting and Enable) offering design flexibility.

The devices, which feature a Compound MillerDrive architecture for strong gate drive, deliver short and well-controlled time delays (<20 ns propagation delays for >1 MHz switching) to allow paralleling drivers, and optimizing drive timing to maximize efficiency.

The gate drivers have a ambient operating temperature range of -40 to +125 degrees C and feature fail-safe inputs where the output is held low if no input signal is present.

Availability and Pricing

Samples of the FAN3216_F085, FAN3227_F085 and FAN3122_F085 power MOSFETs are available upon request. The FAN3216_F085 is priced at $0.98 in 1,000 quantity pieces.  The FAN3227_F085 is priced at $1.10 in 1,000 quantity pieces.  The FAN3122_F085 is priced at $1.33 in 1,000 quantity pieces.

More information about the FAN3216_F085, FAN3227_F085 and FAN3122_F085 gate drivers at