AMIS-30522: Stepper Motor Driver with Comprehensive Diagnostic Feedback and SLA Output
The AMIS-30522 is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and a SPI interface with an external microcontroller. It has an on-chip voltage regulator, reset-output and watchdog reset, able to supply peripheral devices. AMIS-30522 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 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 uses a proprietary PWM algorithm for reliable current control. The AMIS-30522 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-30522 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- Integrated 5V regulator
- Integrated reset function
- 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 5V and 3.3V microcontrollers
- Dual H-Bridge for 2-phase stepper motors
- Programmable peak-current up to 1.6A using a 5-bit current DAC
- Integrated watchdog function
- Flap/valve control in climate control facilities
| Benefits- Supplies external microcontroller
- Reset external microcontroller
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End Products- Intelligent positioning and dynamic motion of surveillance cameras and spotlights
- Dose pumps
- Vending machines
- Pick-and-place machines
- Automotive headlight position
- Dynamic motion of weaving and sewing equipment
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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 |
|---|
| AM305222R1DBGEVB | Active | Pb-free | Daughter Board SPI Stepper Driver NQFP 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 |
|---|
| AMIS30522C5222RG | Active | Pb-free
Halide free | NQFP-32 | 560AA | 3 | Tape and Reel | 2500 | $2.98 |
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) |
|---|
| AMIS30522C5222RG | 6 | 40 | | | 1.6 | 1.6 | 1/32 | SPI | Back EMF/Sensorless | Fully Integrated | Yes | Thermal | Integrated Active | |
