Fully Integrated 3-Phase MOSFET Gate Driver for Industrial Drives and Power Tools

Maxim Integrated Products Inc. has introduced the fully integrated TMC6140-LA 3-phase MOSFET gate driver that simplifies design and maximizes battery life of brushless direct current (DC) motor drives. This MOSFET gate driver integrates all three bottom shunt amplifiers to provide a complete motor drive solution with 30-percent improved power efficiency, while simplifying design by reducing component count by half when compared to similar solutions. It offers 0.5A or 1.0A gate driver current for 5V to 30V DC battery-powered applications, such as power tools where voltages can drop below 10V. Integrated current sense and diagnostics features add functional safety while simplifying design.

The TMC6140-LA is optimized for performance over a wide voltage range which makes it well-suited for servo motors, brushless motors and permanent magnet synchronous motors. This three-phase gate driver is equipped with pins to add a charge pump, statically stabilizing the gate voltages of external MOSFETs in three-phase motors with up to 100A of coil current. This MOSFET gate driver is available in a 36-pin quad-flat no-leads package.

Features

• 3-phase motors up to 100 A coil current (external MOSFETs)

• Gate Drive 0.5 A or 1.0 A

• 3V3 Switching Regulator (0.5 A) with internal Schottky diode (up to 100 mA)

• Charge pump pin to utilize buck converter for step-up converter

• 3 Bottom Shunt Amplifiers

• Analog programmable short detect

• 2 Low Power Modes with 0.25 mA standby current consumption 

Applications

• Industrial Drives

• Power Tools

• Robotics

• Textile Machines

• Factory Automation

• Laboratory Automation

Availability and Pricing

The TMC6140-LA is available for $2.68 from Trinamic authorized distributors. The TMC6140-EVAL evaluation board and TMC6140-EVAL-KIT evaluation kit with both bridge and driver evaluation boards are also offered for $66 and $130, respectively.