AMIS-30421 Overview
Key Specifications
Package: QFN
Mount Type: Surface Mount
Pins: 44
Max Voltage (typical range): 30 V
Description
The AMIS-30421 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 2 external power NMOS H-bridges.
Key Features
- Dual H-Bridge Pre-Drivers for 2-Phase Stepper Motors
- Programmable Current via SPI
- On-chip Current Translator
- SPI Interface
- Speed and Load Angle Output
- 8 Step Modes from Full Step up to 64 Micro-Steps
- Current-Sense via Two External Sense Resistors
- PWM Current Control with Automatic Selection of Fast and Slow Decay
- Low EMC PWM with Selectable Voltage Slopes
- Full Output Protection and Diagnosis
