TI Releases New Scalable Brushed DC Gate Driver
New Design Offers Adjustable Gate Driver Settings for a Wide Range of FETs and DC Motors
Texas Instruments have just released an integrated gate driver that offers adjustable gate drive settings
with the flexibility to drive a wide range of external field-effect transistors (FETs),
supporting multiple motors, speeds or varying loads.
The DRV8701 enables designers to scale their platforms using a single gate driver across various brushed DC motor models
in equipment such as white goods, household appliances, robotics, home automation, power tools, and industrial pumps and valves.
With its adjustable gate drive, advanced protection features and other integrated components, the DRV8701 brushed DC gate driver allows designers to replace up to 45 discrete components with a single device to build smaller and more robust designs.
Features of the DRV8701 Brushed DC Gate Driver include:
- System flexibility and scalability: The DRV8701 gives designers the flexibility to choose their external FETs and easily scale the gate-drive current to adjust the FET slew rate, optimize system electromagnetic interference (EMI) performance, eliminate the need for external resistors/capacitors and provide additional system protection.
- Reduces board space and system complexity: The integration of two low-dropout regulators (LDOs), a current-sense amplifier and full protection features reduces system board footprint by 40 percent compared to competitive and discrete solutions.
- Higher system reliability: Robust on-chip protection includes under-voltage lockout, overcurrent, shoot-through and thermal shutdown protection, as well as more advanced features such as charge pump under-voltage, gate-drive faults and individual FET VDS monitoring to protect external FETs.
- Wide operating voltage: The DRV8701 offers a wide 5.9-V to 45-V motor-supply voltage to support industry-standard 12-V and 24-V supplies.
The company's Web site address is www.ti.com
[Reprinted with kind permission from Texas Instruments - Release Date, 30th June, 2015]