Soft-start and soft-lock start on motor driving apparatus

A motor driving apparatus including a control unit, a soft-start unit, and an output unit, wherein the motor driving apparatus is characterized in that:

• the soft-start unit includes:
• an internal pulse width modulation (PWM) pulse signal generator configured to provide an internal PWM driving signal;
• a power-up initial generator configured to provide a power-up initial signal;
• a FG counter connected to a motor rotation signal and the power-up initial signal via an input end of the FG counter, and configured to count a number being a multiple of the motor rotation signal (FG) so as to output a control signal;
• a RS latch circuit having an input end connected to the power-up initial signal and the control signal outputted by the FG counter so as to output a select signal;
• and
• a select circuit having a first input end connected to an external PWM driving signal, a second input end connected to the internal PWM driving signal, a third input end connected to the select signal, and a output end transmitting a soft-start control signal to the control unit;
• the control unit includes:
• a Hall bias configured to provide a power source to a Hall component and the Hall component detects a phase change signal when a motor is rotated;
• a hysteresis device connected to the Hall component, and converts the phase change signal to the motor rotation signal (FG);
• a counter having an input end is connected to the motor rotation signal (FG) and the internal PWM driving signal and having a output end outputting a counting signal;
• and
• a control device having an input end connected to the power-up initial signal and the soft-start control signal and having a output end outputting a signal to the output unit;
• wherein when power-up and the external PWM driving signal is inputted to the soft-start unit, the soft-start unit generates the internal PWM driving signal and provides the power-up initial signal;
• the power-up initial signal is generated, the control unit transmits the motor rotation signal to the soft-start circuit, and the soft-start circuit selects the internal PWM driving signal and outputs the soft-start control signal to the control unit;
• and
• when the soft-start circuit receives the motor rotation signal and the power-up initial signal, the soft-start circuit counts the number being a multiple of the motor rotation signal (FG) and selects the external PWM driving signal and transmits the soft-start control signal to the control unit.

A motor driving apparatus including a control unit, a soft-start unit and an output unit, wherein the control unit includes a motor rotation signal (FG) and a rotation detecting signal (RD), wherein the motor driving apparatus is characterized in that:

• the soft-start unit includes:
• an internal pulse width modulation (PWM) pulse signal generator configured to provide an internal PWM driving signal;
• a power-up initial generator configured to provide a power-up initial signal;
• a FG counter connected to a motor rotation signal and the power-up initial signal via an input end of the FG counter, and configured to count a number being a multiple of the motor rotation signal (FG) so as to output a control signal;
• a RS latch circuit having an input end connected to the power-up initial signal and the control signal outputted by the FG counter so as to output a select signal;
• and
• a select circuit having a first input end connected to an external PWM driving signal, a second input end connected to the internal PWM driving signal, a third input end connected to the select signal, and a output end transmitting a soft-start control signal to the control unit;
• wherein when lock release and the external PWM driving signal is inputted to the soft-start unit, the soft-start unit generates the internal PWM driving signal and the rotation detecting signal (RD);
• after the rotation detecting signal (RD) is generated, the control unit transmits the motor rotation signal to the soft-start unit, and the soft-start unit selects the internal PWM driving signal and outputs the soft-start control signal to the control unit;
• and
• when the soft-start circuit receives the motor rotation signal and the power-up initial signal, the soft-start circuit counts the number being a multiple of the motor rotation signal (FG) and selects the external PWM driving signal and transmits the soft-start control signal to the control unit.

A motor driving apparatus including a control unit, a soft-start unit and an output unit, wherein the control unit includes a motor rotation signal (FG) and a rotation detecting signal (RD), wherein the motor driving apparatus is characterized in that:

• the soft-start unit includes:
• an internal pulse width modulation (PWM) pulse signal generator configured to provide an internal PWM driving signal;
• a power-up initial generator configured to provide a power-up initial signal;
• a FG counter connected to a motor rotation signal and the power-up initial signal via an input end of the FG counter, and configured to count a number being a multiple of the motor rotation signal (FG) so as to output a control signal;
• a RS latch circuit having an input end connected to the power-up initial signal and the control signal outputted by the FG counter so as to output a select signal;
• and
• a select circuit having a first input end connected to an external PWM driving signal, a second input end connected to the internal PWM driving signal, a third input end connected to the select signal, and a output end transmitting a soft-start control signal to the control unit;
• the control unit includes:
• a Hall bias configured to provide a power source to a Hall component and the Hall component detects a phase change signal when a motor is rotated;
• a hysteresis device connected to the Hall component, and converts the phase change signal to the motor rotation signal (FG);
• a counter having an input end connected to the motor rotation signal (FG) and the internal PWM driving signal, and having a output end outputting a counting signal;
• an anti-lock determination device having an input end connected to the power-up initial signal, the counting signal and the motor rotation signal (FG), and when the phase of the motor rotation signal is not changed, the rotation detection signal (RD) is outputted;
• and
• a control device having an input end connected to the power-up initial signal and the soft-start control signal, and having a output end outputting a signal to the output unit;
• wherein when lock release and the external PWM driving signal is inputted to the soft-start unit, the soft-start unit generates the internal PWM driving signal and the rotation detecting signal (RD);
• after the rotation detecting signal (RD) is generated, the control unit transmits the motor rotation signal to the soft-start unit, and the soft-start unit selects the internal PWM driving signal and outputs the soft-start control signal to the control unit;
• and
• when the soft-start circuit receives the motor rotation signal and the power-up initial signal, the soft-start circuit counts the number being a multiple of the motor rotation signal (FG) and selects the external PWM driving signal and transmits the soft-start control signal to the control unit.

A motor driving apparatus including a control unit, a soft-start unit and a output unit, wherein the motor driving apparatus is characterized in that:

• wherein the soft-start unit includes:
• an internal PWM pulse signal generator configured to provide an internal PWM driving signal;
• a power-up initial generator configured to provide a power-up initial signal;
• a FG counter, and an input end thereof is connected to the motor rotation signal and the power-up initial signal, and configured to count a plurality of the motor rotation signals (FG) so as to output a control signal;
• a RS latch circuit, and an input end thereof is connected to the power-up initial signal and the control signal outputted by the FG counter so as to output a select signal;
• and
• a select circuit, and a first input end thereof is connected to the external PWM driving signal, a second input end is connected to the internal PWM driving signal, a third input end is connected to the select signal and a output end transmits a soft-start control signal to the control unit and the control unit outputs a PWM driving signal to the output unit.

A motor driving apparatus including a control unit, a soft-start unit and an output unit, and the control includes provides a rotation detecting signal, the motor driving apparatus is characterized in that:

• wherein the soft-start unit includes:
• an internal PWM pulse signal generator configured to provide an internal PWM driving signal;
• a power-up initial generator configured to provide a power-up initial signal;
• a FG counter, and an input end thereof is connected to the motor rotation signal and the power-up initial signal, and configured to count a plurality of the motor rotation signal (FG) so as to output a control signal;
• a RS latch circuit, and an input end thereof is connected to the power-up initial signal and the control signal outputted by the FG counter so as to output a select signal;
• and
• a select circuit, and a first input end thereof is connected to the external PWM driving signal, a second input end is connected to the internal PWM driving signal, a third input end is connected to the select signal and a output end transmits a soft-start control signal to the control unit and the control unit outputs a PWM driving signal to the output unit.