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Motor Drivers, Stepper | AMIS-30532
概览
AMIS-30532 是一款微步步进电机驱动器，适合双极步进电机。该芯片通过 IO 引脚和 SPI 接口与外部微处理器进行联接。它具有片上稳压器、重置输出和监控重置，能够为外围设备供电。AMIS-30532 包含一个电流转换表，根据 NXT 输入引脚上的时钟信号以及 DIR（方向）寄存器或输入引脚的状态采用下一个微步进。芯片提供所谓速度和负载角度输出。因此可以基于负载角度创建失速检测算法和控制环路，来调整扭矩和速度。它使用专属的 PWM 算法实现可靠的电流控制。AMIS-30532 采用 I2T100 技术，在同一芯片上同时实现了高压模拟电路和数字功能。芯片可完全兼容汽车电压要求。The AMIS-30532 非常适合汽车、工业、医疗和海洋环境中的通用步进电机应用。借助片上稳压器，它进一步减少了机械电子步进应用的 BOM。
- Dual H-Bridge for 2-phase stepper motors
- Programmable peak-current up to 1.6 A continuous (3.0 A short time) using a 5-bit current DAC
- On-chip current translator
- SPI interface
- Speed and load angle output
- Seven step modes from full-step up to 32 micro-steps
- Fully integrated current-sense
- PWM current control with automatic selection of fast and slow decay
- Low EMC PWM with selectable voltage slopes
- Active fly-back diodes
- Full output protection and diagnosis
- Thermal warning and shutdown
- Compatible with 5 V and 3.3 V microcontrollers
- Integrated 5 V regulator to supply external microcontroller
- Integrated reset function to reset external microcontroller
- Integrated Watchdog Function
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AMIS30532C5321RG
Obsolete
Pb
A
H
P
NQFP-32
3
260
REEL
2500
N
6
40
4.5
5.5
3.2
3.2
1/32
SPI
Fully Integrated
Over-Current
Price N/A
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