DRV3255-Q1, providing 30kW motor power
Easy to manage ADAS and HVAC system power
600A motor 1,000nC MOSFET direct drive


Texas Instruments (TI) announced on the 23rd the launch of the 'DRV3255-Q1' Grade 0 BLDC motor driver for 48V high-power motor control systems such as traction inverters and starter generators in mild hybrid electric vehicles (MHEVs).

Using a 48V motor drive system in MHEVs can reduce exhaust gas emissions from internal combustion engines. It can also help secure additional power for ADAS functions and manage power-consuming loads such as HVAC (heating, ventilation, air conditioning) systems.

Designed according to the TÜV SÜD certified functional safety development process, the DRV3255-Q1 meets the functional safety requirements of SO 26262 ASIL D. It also provides up to 30 kW of motor power and reduces the size of the motor system by up to 30%.

The DRV3255-Q1 is a 3-phase, 48V BLDC motor driver that integrates high-side, low-side, and side-side active short-circuit logic, eliminating the need for external transistors and control logic. Active short-circuit logic functionality provides system designers with flexibility in adjusting MOSFET connections according to system needs.

It also incorporates a dynamic fault response feature. When an overvoltage occurs, the motor driver automatically switches to active short-circuit mode, protecting automotive components from overvoltage stress and improving system performance.

The DRV3255-Q1 directly drives MOSFETs with gate charges up to 1,000nC in motors requiring up to 600A, enabling designers to implement rapid motor restart capabilities in high-torque, large-capacity vehicles.

The operating temperature range is -40 to 150°C, and it protects 48V powertrain systems from switching transients and load dump environments up to 95 V, eliminating the need for external protection circuitry. It is also protected against overvoltage from external 12V power supplies thanks to the digital input/output pins that withstand absolute ratings of up to 75 V.

TI also provides functional safety-related documentation, including Fault Modes, Effects, and Diagnostics Analysis (FMEDA), for the DRV3255-Q1.