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A4980 是一款灵活的微步电动机驱动器,带有内置转换器,易于操作。它采用单芯片解决方案,能够以全步进、半步进、四分之一及十六分之一步进模式驱动双极步进电动机,工作电压和电流可达 28 V 和 ±750 mA。A4980 可使用简单的步进和方向输入或通过 SPI 兼容型接口控制,而且还能用于设置多种整合功能及读取诊断信息。
电流调整器通过编程,能以固定停机时间或固定频率 PWM 工作,并可通过多种衰减模式降低电动机的可闻噪音和提高步进准确性。而且,相电流表可以通过串行接口编程,为特定应用建立适用的微步进电流分布,进一步提高电动机的性能。
电动机的所有相电流均通过 DMOS 全桥式装置控制,使用同步整流,减少功率耗散。在高侧驱动和低侧驱动之间切换时,内部电路和计时器可防止跨导和击穿,
从而避免输出短路。此外,它还具有低负载电流和失速转子检测功能。芯片级保护包括:高温和低温警告、过温关机、过压和欠压锁定。
Samples | Part Composition / RoHS Data | Check Stock | ECAD | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A4980KLPTR-T | Integrated MOSFET | I2C/SPI, STEP/DIR | 1.1 | 10 | Integrated | 3.30 | 32.00 | 1.40 | - | Automotive | View Data | Check Distributor Stock |
Part Number | Architecture | Control Interface | RDS (ON) (Ohms) | Sleep Current | Current Sense Amplifier | Supply Voltage Min (V) | Supply Voltage Max (V) | Peak Output Current (A) | Package | Market |
---|---|---|---|---|---|---|---|---|---|---|
A4980KLPTR-T | Integrated MOSFET | I2C/SPISTEP/DIR | 1.1 | 10 | Integrated | 3.30 | 32.00 | 1.40 | Automotive |