A5939GLPTR-T

Series:	*
Part Status:	Active
Lead Free Status / RoHS Status:	--
Moisture Sensitivity Level (MSL):	--

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A5939GLPTR-T is a low voltage bipolar stepper motor driver IC. It is capable of driving a single winding of bipolar stepper motors. The A5939GLPTR-T stepper motor drivers provide control signals and power supply necessary to drive any 2-phase or 4-phase bipolar stepper motors. It is capable of up to 1/32 micro-step resolution. The current range of A5939GLPTR-T is determined by the appropriate selection of external current setting resistors.The A5939GLPTR-T features a wide voltage operating range allowing operation from 4.5V up to 28V. It is capable of up to 1.5A output current and provides various protection functions, such as over temperature and over current protection. The A5939GLPTR-T integrates a PWM chopper control circuit and includes a control interface (CLK and DIR pins) as well as present direction and over current/temperature monitoring functions.Applications of A5939GLPTR-T include industrial automation, robotics and machine control, precision motor control, etc.Working Principle:The A5939GLPTR-T stepper motor driver utilizes a PWM chopper control circuit to achieve better motor speed performance. The PWM chopper control circuit uses the output of an oscillator to divide the motion control signals input on the CLK and DIR pins into a PWM signal waveform. The PWM signal waveform is then used to switch the power to the motor coils, which determines the magnitude of current flowing through the motor. The PWM waveform is generated using the current setting resistors and the output of the oscillator.The timing of the PWM signal waveform can be adjusted through the adjustment of the current setting resistors so that the A5939GLPTR-T can control the current of a motor in multiple stepping modes. The current setting resistors are also used to set the over current protection and over temperature protection settings on the A5939GLPTR-T. This ensures that the motor driver is not exposed to unsafe current levels or temperatures.The direction of the motor is controlled by the CLK and DIR pins. When a pulse is sent to the CLK pin, the position of the motor advances in the direction of the DIR pin. The A5939GLPTR-T also features a Position Read Back pin that provides information on the current motor position, eliminating the need for external circuitry for motor position monitoring. The A5939GLPTR-T also includes a reset pin for a hardware reset of the motor driver.In conclusion, the A5939GLPTR-T is a low voltage bipolar stepper motor driver IC capable of providing accurate motor control with a wide range of applications. Its flexible design allows for easier control of various types of motors, making it an ideal choice for motor control applications.

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