AMIS-30421 Datasheet - ON Semiconductor

AMIS-30421 Micro-Stepping Stepper Motor Bridge Controller

Name Pin Description GXBL 2 Gate of external NMOS FET of the X bridge bottom left side MOTXP 3 Positive end of phase X *coil GXTL 4 Gate of external NMOS FET of the X bridge top left side GXBR 5 Gate of external NMOS FET of the X bridge bottom right side MOTXN 6 Negative end of p.

AMIS-30421 Micro-Stepping Stepper Motor Bridge Controller Introduction 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. 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 in.

AMIS-30421 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