The AHV85111 isolated gate driver is optimized for driving GaN FETs in multiple applications. An isolated dual positive/ negative output bias supply is integrated into the driver device, eliminating external gate drive auxiliary bias supply or high-side bootstrap. The bipolar output rails with adjustable and regulated positive rail improves dv/dt immunity, greatly simplifies the system design, and reduces EMI through reduced total common mode (CM) capacitance. It also allows the driving of a floating switch in any location in a switching power topology.
Power-Thru integrated isolated bias
No high-side bootstrap or external secondary-side bias
Bipolar drive output, with adjustable regulated positive rail
Regulated 3.3 V low power bias output
50 ns propagation delay, with excellent device-to-device
matching of 5 ns
Separate drive output pins: pull-up (2.8 Ω) and pull-down (1.0 Ω)
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.
10 mm × 7.66 mm × 2.53 mm
12-pin low-profile surface mount