DESCRIPTION
The FAN3223−25 family of dual 4 A 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 also 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 bipolar−MOSFET combination provides high current during the Miller plateau stage of the MOSFET turn−on / turn−off process to minimize switching loss, while providing rail−to−rail voltage swing and reverse current capability.
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