Monday, April 12, 2021
Home Electrical Upgrade 30% Optimisation In Motor Drive Methods With New BLDC Motor Driver

30% Optimisation In Motor Drive Methods With New BLDC Motor Driver

It helps allow MHEV techniques requiring purposeful security as much as ASIL D and achieves a excessive gate-drive present

To scale back international greenhouse gasoline emissions, vehicle producers are more and more producing delicate hybrid electrical automobiles (MHEVs), which use 48 V motor-drive techniques that minimise emissions from a car’s inside combustion engine.

The brand new extremely built-in Grade 0 brushless DC (BLDC) motor driver DRV3255-Q1 helps additional obtain this for 48-V high-power motor management techniques, reminiscent of traction inverters and starter turbines in MHEVs. It assist designers shrink their motor system measurement by as a lot as 30 per cent whereas offering a excessive gate-drive present for elevated safety and output energy. Assembly probably the most stringent security necessities, the brand new motor driver was designed in accordance with TI’s TÜV SÜD-certified purposeful security growth course of, serving to allow as much as Automotive Security Integrity Stage (ASIL) D.

Cut back board house by as a lot as 30%

The DRV3255-Q1 is a three-phase, 48-V BLDC motor driver to combine excessive and low-side energetic short-circuit logic, which eliminates exterior transistors and management logic. By integrating the energetic short-circuit logic and dynamic fault response, the brand new motor driver permits designers to not solely simplify their designs but in addition provide as a lot as 30 kW of motor energy whereas lowering board house and bill-of-materials value in 48-V motor-drive techniques.

The energetic short-circuit logic function provides system designers the flexibleness to rearrange metal-oxide semiconductor field-effect transistor (MOSFET) connections primarily based on system wants and helps stop catastrophic system failures resulting from overvoltage. The dynamic fault response routinely switches the motor driver to energetic short-circuit mode in overvoltage situations, which protects the car’s motor and electrical elements from overvoltage stress whereas optimising system efficiency.

Enhance response instances whereas defending 48-V motor-drive techniques from harsh situations

The DRV3255-Q1 provides excessive output energy ranges to enhance 48V motor-drive system response instances, permitting drivers even in heavy automobiles like SUVs and vehicles to speed up extra shortly after stopping. For motors requiring currents as excessive as 600 A, the DRV3255-Q1 offers the business’s highest gate-drive present, which may straight drive as much as 1,000-nC gate-charge MOSFETs.

Moreover, this Automotive Electronics Council (AEC)-Q100 Grade 0 motor driver protects 48-V powertrain techniques from switching transients as excessive as 95 V and load-dump situations at a large temperature vary (-40°C to 150°C), eliminating the necessity for cover circuitry.

Streamline ISO 26262 compliance as much as ASIL D

The DRV3255-Q1 was designed utilizing TI’s licensed purposeful security {hardware} growth course of and contains built-in security mechanisms and documentation reminiscent of failure modes, results and diagnostic evaluation and a purposeful security guide. Along with the protection mechanisms for the machine’s inside failure modes, the digital enter/output pins stand up to as much as 75-V absolute most rankings to guard the DRV3255-Q1 in opposition to an exterior 12-V power-supply overvoltage.

“A 48-V system is a step-change that unique tools producers [OEMs] can implement to satisfy targets round lowering emissions, whereas additionally including energy for superior driver-assistance system options and managing power-hungry masses such because the heating, air flow and air-con system,” stated Asif Anwar, director of the powertrain, physique, chassis and security service at Technique Analytics. “Combining modern efficiency traits with purposeful security and Grade 0 interprets to real-world, system-level operational advantages that may assist OEMs obtain these targets.”

The DRV3255-Q1 is now accessible from Texas Devices in a 64-pin quad flat bundle.


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