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1EDF5673F General Description
DescriptionCoolGaN™ 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. The widely used RC-coupled gate driver fulfils these requirements, however it suffers from a duty-cycle dependence of switching dynamics and the lack of negative gate drive in specific situations.Infineons 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.Features• Dedicated gate driver ICs for high-voltage GaN power switches (CoolGaN™, GIT technology based products) – low driving impedance (on-resistance 0.85 Ω source, 0.35 Ω sink) – resistor programmable gate current (typ. 10 mA) in steady “on” state – programmable negative gate voltage to completely avoid spurious turn-on• 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/-6 ns)• Galvanic input-to-output isolation based on coreless transformer (CT) technology• Common mode transient immunity (CMTI)> 200 V/ns• 3 package versions – 1EDF5673K: 13-pin LGA (5 x 5 mm, PG-TFLGA-13-1) for functional isolation (1.5 kV) – 1EDF5673F: 16-pin P-DSO (150 mil, PG-DSO-16-11) for functional isolation (1.5 kV) – 1EDS5663H: 16-pin P-DSO (300 mil, PG-DSO-16-30) for reinforced isolation• Fully qualified according to JEDEC for Industrial Applications
|PMIC - Power Management ICs
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