A series of 80-V motor drivers for advanced 48-V automotive systems address the need for flexible and reliable solutions in electric vehicles. Allegro’s new suite of fully integrated gate drivers offer optimized architecture and performance directly impacting vehicle weight, battery/fuel efficiency, and driver safety.
The new gate drivers are designed to suit any load configuration from half-bridge with independent high-side and low-side outputs to three-phase brushless dc (BLDC) control. Developed on a high-voltage process node for 48-V systems, these devices offer world-class safety diagnostics and diagnostic verification enabled with a fully compliant ISO 26262 process.
The AMT49100 and AMT49101 are 80-V safety three-phase gate drivers for electric power steering (EPS) and other safety-critical systems.
The AMT49502 is an 80-V safety half-bridge gate driver with actuators and solid-state relays.
The A89503 is an 80-V safety half-bridge gate driver with independent high-side and low-side output loads for floating loads, such as seat heaters and catalytic heaters.
The A89500 is a 100-V high-power half-bridge gate driver in ultra-compact DFN package for distributed systems, 48-V power inverters, golf carts, and e-bikes.
Offered in ultra-small packages, these devices are designed to meet the rigorous demands of the automotive market by increasing functionality while decreasing PCB footprint.
“The advantages for 48V are clear,” says Steve Lutz, Product Line Director at Allegro. “Engineers can now increase efficiency, reduce weight and design size, and achieve a more accurate and higher performance driver experience. As the electric vehicle (EV) market is rapidly expanding, so too is our portfolio of 48V products. Our innovative solutions integrate the right features for the right application—all while being one of the safest and smallest offerings on the market.”
Acknowledging the importance of system and driver safety, Allegro’s new 80-V automotive gate drivers were developed on an ISO 26262 compliant design process and provide the best diagnostic features in the industry. Candidates for safety-critical systems, Allegro’s ASIL Gate Drivers have over 20 diagnostic features included, allowing the customer to diagnose, verify, and act against system faults.
“Engineers and system designers can now rest assured that they are building-in a wide variety of market-leading diagnostic capabilities with the use of Allegro’s 48V motor drivers,” says Vijay Mangtani, Vice President of Power ICs. “At Allegro, we’re passionate about developing intelligent solutions that move the world toward a safer and more sustainable future. The use of these devices ensure achievement of this vision and are giving our customers a competitive edge.”
Allegro MicroSystems, 955 Perimeter Road, Manchester, NH 03103, allegromicro.com/evsolutions