3-phase MOSFET gate driver boosts battery life

TRINAMIC Motion Control, part of Maxim Integrated Products, has introduced a fully integrated TMC6140-LA 3-phase MOSFET gate driver that simplifies design and maximises battery life of brushless direct current (DC) motor drives.

The TMC6140-LA 3-phase MOSFET gate driver integrates all three bottom shunt amplifiers to provide a complete motor drive solution with 30-percent improved power efficiency, while at the same time simplifying the design by reducing component count by half when compared to similar solutions.

The TMC6140-LA has been optimised for performance over a wide voltage range, making it well-suited for servo motors, brushless motors and permanent magnet synchronous motors.

The 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.

Offered in a 36-pin quad-flat no-leads (QFN) package, the gate driver is a flexible solution offering 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.