AMIS-30421 Datasheet PDF (Micro-Stepping Stepper Motor Bridge Controller)

AMIS-30421 - Micro-Stepping Stepper Motor Bridge Controller

Description

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

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.

Datasheet Details

Part number	AMIS-30421
Manufacturer	onsemi
File Size	580.17 KB
Description	Micro-Stepping Stepper Motor Bridge Controller
Datasheet	AMIS-30421 Datasheet

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Full PDF Text Transcription

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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 industrial and automotive applications. It uses a proprietary PWM algorithm for reliable current control. The AMIS−30421 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.

Published: Apr 1, 2020 |