AMIS-30522 Series

Stepper Motor Driver with Comprehensive Diagnostic Feedback and SLA Output

Catalog

Stepper Motor Driver with Comprehensive Diagnostic Feedback and SLA Output

Part	Package / Case	Voltage - Load [Max]	Voltage - Load [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Function	Motor Type - Stepper	Applications	Technology	Current - Output	Mounting Type	Supplier Device Package	Output Configuration	Interface	Operating Temperature [Max]	Operating Temperature [Min]
ON Semiconductor AMIS30522C5222G	32-VQFN Exposed Pad	30 V	6 V	4.75 V	5.25 V	Driver - Fully Integrated Control and Power Stage	Bipolar	General Purpose	Power MOSFET	1.2 A	Surface Mount	32-NQFP (7x7)	Half Bridge (4)	SPI	172 °C	-40 °C
ON Semiconductor AMIS30522C5222RG	32-VQFN Exposed Pad	30 V	6 V	4.75 V	5.25 V	Driver - Fully Integrated Control and Power Stage	Bipolar	General Purpose	Power MOSFET	1.2 A	Surface Mount	32-NQFP (7x7)	Half Bridge (4)	SPI	172 °C	-40 °C

Catalog

Stepper Motor Driver with Comprehensive Diagnostic Feedback and SLA Output

Key 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

Description

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.