AMIS-30421 Series

Motor pre-driver, microstepping stepper, with motor bridge control

Catalog

Motor pre-driver, microstepping stepper, with motor bridge control

Part	Contents	Supplied Contents	Utilized IC / Part	Type	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Interface	Voltage - Supply [Max]	Voltage - Supply [Min]	Applications	Function	Motor Type - Stepper	Output Configuration	Step Resolution [Max]	Step Resolution [Min]	Supplier Device Package
ON Semiconductor AMIS30421DBGEVB	Board(s)	Board(s)	AMIS30421	Power Management
ON Semiconductor AMIS30421C4211RG					44-VFQFN Exposed Pad	-40 °C	125 ¯C	Surface Mount	SPI	3.6 V	3 V	General Purpose	Controller - Commutation Direction Management	Bipolar	Pre-Driver - Half Bridge (4)	0.015625	1	44-QFN 7x7
ON Semiconductor AMIS30421C4211G					44-VFQFN Exposed Pad	-40 °C	125 ¯C	Surface Mount	SPI	3.6 V	3 V	General Purpose	Controller - Commutation Direction Management	Bipolar	Pre-Driver - Half Bridge (4)	0.015625	1	44-QFN 7x7

Catalog

Motor pre-driver, microstepping stepper, with motor bridge control

Key Features

• 8 step modes from full step to 64 micro steps

• Programmable slope control

Description

The AMIS30421 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.