Motor driver circuit

A motor driver circuit, comprising:

• a logic circuit, configured to generate a control signal that instructs a high-side transistor to turn on or off;
• and
• a high-side driver, configured to drive the high-side transistor according to the control signal, wherein
• the high-side driver includes:
• a charge pump circuit, configured to generate a boosted voltage according to a clock signal and supply the boosted voltage to a gate of the high-side transistor;
• a charging control circuit, configured to stop supplying the clock signal to the charge pump circuit after the control signal instructs the high-side transistor to turn on and after a charging period has elapsed;
• and
• a turn-off circuit, configured to reduce a voltage at the gate of the high-side transistor when the control signal instructs the high-side transistor to turn off, wherein
• the charge pump circuit includes a reference input node and is configured to be outputtable a voltage greater than the voltage supplied to the reference input node by a predetermined voltage in response to the clock signal,
• the motor driver circuit further comprises a third switch connected between the reference input node of the charge pump circuit and a drain of the high-side transistor,
• the charging control circuit is configured to
• turn on the third switch when the control signal instructs the high-side transistor to turn on, and then
• start supplying the clock signal to the charge pump circuit,
• and after the charging period has elapsed, the supply of the clock signal to the charge pump circuit is stopped.