AMIS30543DBGEVB

AMIS-30543 Micro-Stepping Motor Driver Introduction The AMIS 30543 is a microstepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and an www.onsemi.com SPI interface with an external microcontroller. It has an onchip voltage regulator, resetoutput and watchdog reset, able to supply peripheral devices. AMIS30543 contains a currenttranslation table and takes the next microstep 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 socalled speed and load angle 132 output. This allows the creation of stall detection algorithms and control loops based on loadangle to adjust torque and speed. It is QFN32 using a proprietary PWM algorithm for reliable current control. CASE 485J The AMIS 30543 is implemented in I2T100 technology, enabling both highvoltage analog circuitry and digital functionality on the same chip. The chip is fully compatible with the automotive voltage MARKING DIAGRAM requirements. 32 The AMIS 30543 is ideally suited for generalpurpose stepper 1 motor applications in the automotive, industrial, medical, and marine AMIS30543 environment. With the onchip voltage regulator it further reduces the 0C543001 BOM for mechatronic stepper applications. AWLYYWWG Key Features Dual HBridge for 2Phase Stepper Motors Programmable PeakCurrent Up to 3 A A = Assembly Location WL = Wafer Lot OnChip Current Translator YY = Year SPI Interface WW = Work Week G = PbFree Package Speed and Load Angle Output Eleven Step Modes from Full Step Up to 128 MicroSteps Fully Integrated CurrentSense PWM Current Control with Automatic Selection of Fast and Slow ORDERING INFORMATION Decay See detailed ordering and shipping information in the package dimensions section on page 37 of this data sheet. Low EMC PWM with Selectable Voltage Slopes Active FlyBack Diodes Full Output Protection and Diagnosis Thermal Warning and Shutdown Compatible with 5 V and 3.3 V Microcontrollers Integrated 5 V Regulator to Supply External Microcontroller Integrated Reset Function to Reset External Microcontroller Integrated Watchdog Function These Devices are PbFree and are RoHS Compliant Semiconductor Components Industries, LLC, 2014 1 Publication Order Number: April, 2019 Rev. 3 AMIS30543/DMOTXP MOTYP MOTXP MOTYP VBB VBB POR/WD CS TSTO CLR VCP DO CPP CPN VDD AMIS30543 BLOCK DIAGRAM VDD CPN CPP VCP VBB Timebase Vreg CLK Chargepump POR EMC MOTXP CS P T W OTP R M DI SPI A MOTXN Isense N DO S L NXT A Logic & Load EMC MOTYP T Registers DIR Angle P O R W SLA M Temp. MOTYN Isense POR/WD Sense CLR AMIS30543 Band ERR gap TST0 GND Figure 1. Block Diagram AMIS 30543 32 31 30 29 28 27 26 25 1 24 GND GND 23 2 GND DI 22 3 CLK MOTXN 21 NXT 4 MOTXN AMIS30543 5 20 DIR MOTYN 6 19 ERR MOTYN 7 18 SLA GND 8 17 GND 9 1011 12 1314 1516 Figure 2. Pin Out AMIS30543 www.onsemi.com 2