Drive Circuit for a Heating or Inductive Coil

This solution drives an external element whether it be a coil for heating, a wire for generating a magnetic field, or inductor to propel a motor. A microcontroller (MCU) sends a pulse width modulated signal to the gate driver that efficiently connects power to the driving element or removes the charge from it. A comparator and amplifiers are used to monitor current flow and trigger any overcurrent events.

System Benefits​:

• Improved drive efficiency
• Improved load drive control
• Achieves high bandwidth current measurement
• Fast (1µs) overcurrent safety detection

Target Applications:

• Heating elements
• Driving motors
• Discrete DC/DC converters
• Perimeter fencing

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