Integrated Grade 0 BLDC motor driver shrinks 48-V motor-drive systems as much as 30% in mild hybrid electric vehicles

04/09/2021

Texas Instruments (TI) introduced a highly integrated Grade 0 brushless DC (BLDC) motor driver for 48-V high-power motor control systems, such as traction inverters and starter generators in mild hybrid electric vehicles (MHEVs). The DRV3255-Q1 can help designers shrink their motor system size by as much as 30%, while providing the industry’s highest gate-drive current for increased protection and output power. Meeting the most stringent safety requirements, the new motor driver was designed according to TI’s TÜV SÜD-certified functional safety development process, helping enable up to Automotive Safety Integrity Level (ASIL) D.

To help decrease greenhouse gas emissions globally, automobile manufacturers are increasing the production of MHEVs, which use 48-V motor-drive systems to help reduce emissions from a vehicle’s internal combustion engine. The TI Functional Safety-Compliant DRV3255-Q1 allows manufacturers to design a motor-drive system to help enable MHEV systems up to ASIL D, supplying as much as 30 kW of motor power which can improve the response time of a 48-V motor-drive system in heavy vehicles.

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