Sawing tool and power tool

A sawing tool, comprising:

• a motor comprising a rotor and a plurality of phases of stator windings;
• a battery pack supplying power to at least the motor;
• and
• a control circuit for controlling the motor to rotate or brake;
• wherein the control circuit comprises a driver circuit comprising a plurality of high-side switching elements and a plurality of low-side switching elements and a controller electrically connected to at least the driver circuit and outputting a control signal to control states of the plurality of high-side switching elements and the plurality of low-side switching elements;
• and
• wherein the controller is configured to, in response to a brake signal, control the driver circuit to operate in an energy feedback state and adjust a duty cycle of the control signal to adjust a magnitude of a feedback current in the energy feedback state.

A power tool, comprising:

• a motor comprising a rotor and three phases of stator windings;
• a battery pack supplying power to at least the motor;
• and
• a control circuit for controlling the motor to rotate or brake;
• wherein the control circuit comprises a driver circuit comprising a plurality of high-side switching elements and a plurality of low-side switching elements and a controller electrically connected to at least the driver circuit and outputting a control signal to control switching states of the switching elements;
• and
• wherein the controller is configured to, in response to a brake signal, control the driver circuit to cyclically switch between a brake mode and a freewheeling mode to control a feedback current generated by the motor during a braking process to be not greater than a current threshold.