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UC3717A

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步進馬達驅動電路

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UC3717A

現行
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產品詳細資料

Vs ABS (max) (V) 50 Peak output current (A) 1 Rating Catalog Operating temperature range (°C) 0 to 70
Vs ABS (max) (V) 50 Peak output current (A) 1 Rating Catalog Operating temperature range (°C) 0 to 70
PDIP (N) 16 181.42 mm² 19.3 x 9.4
  • 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
  • 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

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.

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.
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類型 標題 日期
* Data sheet Stepper Motor Drive Circuit datasheet 1999年 9月 5日
White paper How smart tune regulates current in stepper motors (Rev. A) 2019年 3月 19日
Application note UC3717 and L-C Filter Reduce EMI and Chopping Losses in Step Motor 1999年 9月 5日

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