步进电机驱动电路
The 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.
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UC3717A TI 德州仪器 | 当前型号 | 当前型号 |
UC3717 德州仪器 | 功能相似 | UC3717A和UC3717的区别 |
DRV8829 德州仪器 | 功能相似 | UC3717A和DRV8829的区别 |