The AHV85003K20ESTR from Allegro MicroSystems is an Automotive-Grade Self-Powered Isolated SiC Driver Chipset that is optimised for driving discrete SiC FETs in applications such as automotive on-board chargers (OBC), solar inverters, industrial robotics, data center power shelves, and general power supply applications. This gate driver requires an input voltage of 10.5-13.2 V. It transmits both PWM signal and gate bias power through the external transformer, eliminating the need for any external auxiliary bias supply or high-side bootstrap. This gate driver features bipolar output rails with a selectable regulated positive rail and adjustable negative off-state rail for improved dv/dt immunity. It is configured with the VSECP setting for a primary output of 20 V.
This gate driver allows the driving of a floating switch in any location in a switching power topology, making it ideal for half-bridge, multilevel topologies, and any topology with a floating or high-side switch. It also features fast propagation delay and high peak source/sink capability to efficiently drive SiC FETs in high-frequency designs. This AEC-Q100 Grade 1 qualified gate driver provides integrated protection circuits, including UVLO on primary and secondary bias rails, secondary bias rail over-voltage, fast-response enable input, and overtemperature shutdown. It is available in a surface-mount package that measures 4.0 x 4.0 x 0.75 mm.
