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Allegro MicroSystems, Inc. announced a strategic expansion of its Power-Thru™ isolated gate driver family with the AHV85003/AHV85043 chipset. Alongside the flagship AHV85311 integrated solution, the broader portfolio forms a complete ecosystem for high-voltage SiC designs in AI data centers, electric vehicles and clean-energy systems. By eliminating external isolated bias supplies for gate drivers, the solution shrinks footprint and BOM—critical for maximizing power density in demanding 800 V platforms.
Power-Thru isolated gate drivers integrate signal and power across a single isolation barrier, reducing common-mode capacitance by up to 15x to mitigate a major noise source. The approach can deliver up to a 20 dB improvement in EMI performance, boosting efficiency and saving engineering time otherwise spent on noise debugging. To reinforce supply chain resilience, both the new AHV85003/AHV85043 chipset and the AHV85311 integrated device support a multi-source SiC strategy. With selectable Vgs options of 15 V, 18 V and 20 V and an adjustable regulated negative voltage, designers can transition among SiC FET vendors without a board redesign.
The expanded portfolio offers two implementation paths. The AHV85311 integrates the isolation transformer for a plug-and-play route that accelerates time-to-market. The AHV85003/AHV85043 chipset gives teams the flexibility to choose an external transformer to optimize cost, layout and isolation requirements while retaining the same efficiency and noise advantages.
“We are redefining what engineers should expect from a gate driver,” said Vijay Mangtani, Vice President and GM of High Voltage Power Products at Allegro MicroSystems. “With Power-Thru, we solved the fundamental physics problem of noise in high-voltage systems. Now, by offering both a chipset and an integrated solution, we are giving our customers a complete toolkit. Whether they need the plug-and-play speed of an integrated solution or the granular control of a chipset, they get the same game-changing efficiency and the freedom to use the SiC FETs of their choice.”
Original – Allegro MicroSystems
