AMIS-30532: Microstepping Motor Driver
The AMIS-30532 is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and an SPI interface with an external microcontroller. It has an on-chip voltage regulator, reset-output and watchdog reset, able to supply peripheral devices. The AMIS-30532 contains a current-translation table and takes the next micro-step depending on the clock signal on the NXT input pin and the status of the DIR (=direction) register or input pin. The chip provides a so-called speed and load angle output. This allows the creation of stall detection algorithms and control loops based on load-angle to adjust torque and speed. It is using a proprietary PWM algorithm for reliable current control. The AMIS-30532 is implemented in I2T100 technology, enabling both high-voltage analog circuitry and digital functionality on the same chip. The chip is fully compatible with the automotive voltage requirements. The AMIS-30532 is ideally suited for general-purpose stepper motor applications in the automotive, industrial, medical, and marine environment. With the on-chip voltage regulator it further reduces the BOM for mechatronic stepper applications.
Features- 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
|
Software (2)
Package Drawings (1)
| Document Title | Document ID/Size | Revision |
|---|
| QFN32 7x7 | 560AA (54.7kB) | A |
Application Notes (4)
Evaluation Board Documents (7)
Data Sheets (1)
Evaluation/Development Tool Information
| Product | Status | Compliance | Short Description |
|---|
| AM305321R1DBGEVB | Active | | Daughter Board Stepper Driver NQ Evaluation Board |
| AMIS305XXGEVK | Active | Pb-free | Industrial Stepper Motor Driver Evaluation Kit 305XX Family |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| AMIS30532C5321RG | Active | Pb-free
Halide free | NQFP-32 | 560AA | 3 | Tape and Reel | 2500 | $3.6 |
Specifications
| Product | VM Min (V) | VM Max (V) | VCC Min (V) | VCC Max (V) | IO Max (A) | IO Peak Max (A) | Step Resolution | Control Type | Feedback Method | Current Sense | Regulator Output | Fault Detection | Flyback Protection | RDS(on) Typ (Ω) |
|---|
| AMIS30532C5321RG | 6 | 40 | | | 3.2 | 3.2 | 1/32 | SPI | Back EMF/Sensorless | Fully Integrated | Yes | Over-Current | Integrated Active | |
