Texas Instruments has released DRV3255-Q1, a highly integrated Grade 0 brushless DC (BLDC) motor driver for 48-V high-power motor control systems like traction inverters and starter generators in mild hybrid electric vehicles (MHEVs). This new motor driver integrates active short-circuit logic and dynamic fault response. It enables designers to simplify their designs and shrink their motor system size by as much as 30%.
With this new device, the designers can supply as much as 30 kW of motor power, while reducing board space and bill-of-materials cost in 48-V motor-drive systems. The DRV3255-Q1 motor driver is designed according to TI’s TUV SUD-certified functional safety development process and meets the most stringent safety requirements, hence enabling up to Automotive Safety Integrity Level (ASIL) D.
The TI Functional Safety-Compliant DRV3255-Q1 comes with an active short-circuit logic feature that gives system designers the flexibility to arrange metal-oxide-semiconductor field-effect transistor (MOSFET) connections based on system needs and helps prevent catastrophic system failures due to overvoltage. Additionally, the dynamic fault response automatically switches the motor driver to active short-circuit mode in overvoltage conditions, thereby protecting the motor and electrical components of a vehicle from overvoltage stress while optimizing system performance.
Features of DRV3255-Q1 Motor Driver
- Reduce board space by as much as 30%
- Improve response times while protecting 48-V motor-drive systems from harsh conditions
- Streamline ISO 26262 compliance up to ASIL D
- AEC-Q100 Test Guidance for automotive applications
- Functional Safety-Compliant targeted
- Three N-Channel half-bridge gate driver
- Device configurations options
- Integrated configurable Active Short Circuit (ASC) function
- Serial peripheral interface (SPI) with CRC
- Supports 3.3-V and 5-V logic inputs
- Advanced protection features
The DRV3255-Q1 is available from TI in a 64-pin quad flat package and the price range starts at US$3.99 in 1,000-unit quantities.