Overview
The AMIS-30543 is a micro-stepping stepper motor driver designed for bipolar stepper motors. It is connected through I/O pins and an SPI interface with an external microcontroller. The chip features an on-chip voltage regulator, reset output, and watchdog reset, which can supply peripheral devices. It utilizes a proprietary PWM algorithm for reliable current control and is implemented in I2T100 technology, enabling both high-voltage analog circuitry and digital functionality on the same chip. The AMIS-30543 is fully compatible with automotive voltage requirements and is suited for various applications including automotive, industrial, medical, and marine environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Remark/Test Conditions |
|---|---|---|---|---|---|
| VBB (Nominal Operating Supply Range) | 6 | 30 | V | ||
| VDD (Regulated Output Voltage) | 4.5 | 5 | 5.5 | V | ILOAD within limits |
| ILOAD (Max Output Current) | 40 | mA | 6 V ≤ VBB < 8 V | ||
| Peak Current Limitation | 3 | A | Programmable | ||
| PWM Frequency | 20.5 | 22.8 | 25.1 | kHz | |
| Thermal Warning | 150 | 160 | 170 | °C | |
| Thermal Shutdown | Ttw + 20 | °C |
Key Features
- Dual H-Bridge for 2-Phase Stepper Motors
- Programmable Peak-Current up to 3 A
- On-Chip Current Translator
- SPI Interface
- Speed and Load Angle Output
- Eleven Step Modes from Full Step up to 128 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
Applications
- Automotive applications
- Industrial manufacturing equipment
- Medical equipment
- Marine equipment
- CNC equipment
- Textile equipment
Q & A
- What is the AMIS-30543 used for?
The AMIS-30543 is a micro-stepping stepper motor driver for bipolar stepper motors, used in various applications including automotive, industrial, medical, and marine environments.
- What is the maximum programmable peak current of the AMIS-30543?
The maximum programmable peak current of the AMIS-30543 is up to 3 A.
- What interface does the AMIS-30543 use for communication with an external microcontroller?
The AMIS-30543 uses an SPI interface for communication with an external microcontroller.
- What is the purpose of the speed and load angle output in the AMIS-30543?
The speed and load angle output allows for the creation of stall detection algorithms and control loops to adjust torque and speed based on load angle.
- What technology is the AMIS-30543 implemented in?
The AMIS-30543 is implemented in I2T100 technology, enabling both high-voltage analog circuitry and digital functionality on the same chip.
- What are the thermal warning and shutdown temperatures for the AMIS-30543?
The thermal warning temperature is between 150°C to 170°C, and the thermal shutdown temperature is Ttw + 20°C.
- Is the AMIS-30543 compatible with automotive voltage requirements?
- What is the maximum output current of the AMIS-30543?
The maximum output current of the AMIS-30543 is 40 mA for 6 V ≤ VBB < 8 V.
- Does the AMIS-30543 have integrated current-sense and PWM current control?
- What is the package type of the AMIS-30543?
The AMIS-30543 is available in a QFN-32 package.
