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