AMIS-30422: Stepper Motor Driver/Controller for External FETs
The AMIS-30422 is a micro-stepping stepper motor bridge controller for large current range bipolar applications. The chip interfaces via a SPI interface with an external controller in order to control two external power NMOS H-bridges. It has an on-chip voltage regulator, current sensing, self adapting PWM controller and pre-driver with smart slope control switching allowing the part to be EMC compliant with industrial and automotive applications. It uses a proprietary PWM algorithm for reliable current control.
Features- Dual HBridge PreDrivers for 2Phase Stepper Motors
- Programmable Current via SPI
- Onchip Current Translator
- SPI Interface
- Speed and Load Angle Output
- 9 Step Modes from Full Step up to 128 MicroSteps
- CurrentSense via Two External Sense Resistors
- PWM Current Control with Automatic Selection of Fast and SlowDecay
- Low EMC PWM with Selectable Voltage Slopes
- Full Output Protection and Diagnosis
- Thermal Warning and Shutdown
- Compatible with 3.3 V Microcontrollers
- Integrated 3.3 V Regulator to Supply External Microcontroller
- Integrated Reset Function to Reset External Microcontroller
- Integrated Watchdog Function
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Applications | End Products- HVAC
- Industrial Control Systems
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Software (2)
Package Drawings (1)
Application Notes (2)
Evaluation Board Documents (7)
Data Sheets (1)
Evaluation/Development Tool Information
| Product | Status | Compliance | Short Description |
|---|
| AMIS30422DBGEVB | Active | | Daughter Board Stepper Motor Driver/Controller for External FETs 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 |
|---|
| AMIS30422C422MNTWG | Active | Pb-free
Halide free | QFN-48 | 485AJ | 3 | Tape and Reel | 2500 | $3.0799 |
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) |
|---|
| AMIS30422C422MNTWG | 6 | 40 | | | 15 | 20 | 1/128 | | Back EMF/Sensorless | External Resistor | Yes | Thermal | Integrated Active | |
