FAN3226

FAN3226 / FAN3227 / FAN3228 / FAN3229 — Dual 2A High-Speed, Low-Side Gate Drivers May 2008 FAN3226 / FAN3227 / FAN3228 / FAN3229 Dual 2A High-Speed, Low-Side Gate Drivers Features ƒ ƒ ƒ ƒ ƒ ƒ Industry-Standard Pinouts 4.5 to 18V Operating Range 3A Peak Sink/Source at VDD = 12V 2.4A Sink / 1.6A Source at VOUT = 6V Choice of TTL or CMOS Input Thresholds Four Versions of Dual Independent Drivers: Description The FAN3226-29 family of dual 2A gate drivers is designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications by providing high peak current pulses during the short switching intervals. The driver is available with either TTL or CMOS input thresholds. Internal circuitry provides an under-voltage lockout function by holding the output low until the supply voltage is within the operating range. In addition, the drivers feature matched internal propagation delays between A and B channels for applications requiring dual gate drives with critical timing, such as synchronous rectifiers. This enables connecting two drivers in parallel to effectively double the current capability driving a single MOSFET. The FAN322X drivers incorporate MillerDrive™ architecture for the final output stage. This bipolarMOSFET combination provides high current during the Miller plateau stage of the MOSFET turn-on / turn-off process to minimize switching loss, while providing railto-rail voltage swing and reverse current capability. The FAN3226 offers two inverting drivers ...