CoolGaN™ and similar GaN switches require a continuous gate current of a few mA in their "on" state. Besides, due to low threshold voltage and extremely fast switching transients, a negative "off" voltage level may be needed. Infineon"s GaN EiceDRIVER™ solves these issues with very low effort. The two output stages shown below enable a zero "off" level to eliminate any duty-cycle dependence. In addition, the differential topology is able to provide negative gate drive without the need for a negative supply voltage. However, it requires a floating supply voltage not compatible with bootstrapping.
● Dedicated gate driver ICs for Infineon"s high voltage GaN power switches (CoolGaN™, X-GaN™)
● Single output supply voltage (typ. 8 V, floating)
● Switching behavior independent of duty-cycle (2"off" voltage levels)
● Differential concept to ensure negative gate drive voltage under any condition
● Fast input-to-output propagation (37 ns) with excellent stability (+7/-6ns)
● Galvanic input-to-output isolation based on coreless transformer (CT) technology
● Common mode transient immunity (CMTI) > 200 V/ns
