Charged EVs | Allegro MicroSystems expands gate driver portfolio to simplify 800 V SiC energy design

Allegro MicroSystems has launched its AHV85003 and AHV85043 remoted gate driver chipset, increasing its Energy-Through remoted gate driver portfolio. This chipset joins Allegro’s present AHV85311 built-in resolution, forming a product ecosystem for high-voltage silicon carbide (SiC) designs in EVs, information facilities and different methods. Allegro says that this new providing addresses the problem of energy conversion design in 800-volt methods by eliminating the necessity for exterior remoted bias provides for gate drivers, which might scale back the general resolution footprint and invoice of supplies.

The Energy-Through remoted gate drivers combine each sign and energy throughout a single isolation barrier. This structure reduces common-mode capacitance by as much as 15 instances in comparison with conventional remoted gate drivers that use exterior bias DC-DC converters. The corporate says that the gadgets obtain as much as a 20 decibel enchancment in electromagnetic interference (EMI) efficiency in comparison with main competitor options, which might considerably increase system effectivity and scale back noise challenges for design groups.

For EV designers utilizing SiC FETs, the expanded product household helps a multi-source technique with selectable gate-to-source voltages of 15, 18, or 20 volts, together with adjustable regulated adverse voltage. This allows compatibility throughout SiC FETs from totally different distributors, lowering the necessity for board redesigns. The brand new portfolio gives two choices: the AHV85311 built-in resolution consists of the isolation transformer for a streamlined, all-in-one strategy, whereas the brand new AHV85003 and AHV85043 chipset permits engineers to customise exterior transformer choice to satisfy particular isolation necessities and optimize format or value.

“We’re redefining what engineers ought to anticipate from a gate driver,” mentioned Vijay Mangtani, Vice President and GM of Excessive Voltage Energy Merchandise at Allegro MicroSystems. “With Energy-Through, we solved the basic physics downside of noise in high-voltage methods. Now, by providing each a chipset and an built-in resolution, we’re giving our clients a whole toolkit. Whether or not they want the plug-and-play velocity of an built-in resolution or the granular management of a chipset, they get the identical game-changing effectivity and the liberty to make use of the SiC FETs of their selection.”

Supply: Allegro MicroSystems