UC3717A是TI公司的一款运动/电机控制产品，UC3717A是步进电机驱动电路，本页介绍了UC3717A的产品说明、应用、特性等，并给出了与UC3717A相关的TI元器件型号供参考。
UC3717A - 步进电机驱动电路 - 运动/电机控制 - 电源管理特殊功能 - TI公司（Texas Instruments，德州仪器）
The UC3717A is an improved version of the UC3717, used to switch drive the current in one winding of a bipolar stepper motor. The UC3717A has been modified to supply higher winding current, more reliable thermal protection, and improved efficiency by providing integrated bootstrap circuitry to lower recirculation saturation voltages. The diagram shown below presents the building blocks of the UC3717A. Included are an LS-TTL compatible logic input, a current sensor, a monostable, a thermal shutdown network, and an H-bridge output stage. The output stage features built-in fast recovery commutating diodes and integrated bootstrap pull up. Two UC3717As and a few external components form a complete control and drive unit for LS-TTL or micro-processor controlled stepper motor systems.
The UC3717A is characterized for operation over the temperature range of 0°C to +70°C.
- Full-Step, Half-Step and Micro-Step Capability
- Bipolar Output Current up to 1A
- Wide Range of Motor Supply Voltage 10-46V
- Low Saturation Voltage with Integrated Bootstrap
- Built-In Fast Recovery Commutating Diodes
- Current Levels Selected in Steps or Varied Continuously
- Thermal Protection with Soft Intervention
