AMIS-30532 Micro-Stepping Motor Driver Introduction The AMIS 30532 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. The AMIS30532 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 output. This allows the creation of stall detection algorithms and NQFP32, 7x7 control loops based on loadangle to adjust torque and speed. It is CASE 560AA using a proprietary PWM algorithm for reliable current control. The AMIS30532 is implemented in I2T100 technology, enabling both highvoltage analog circuitry and digital functionality on the MARKING DIAGRAM same chip. The chip is fully compatible with the automotive voltage requirements. The AMIS 30532 is ideally suited for generalpurpose stepper motor applications in the automotive, industrial, medical, and marine environment. With the onchip voltage regulator it further reduces the BOM for mechatronic stepper applications. Key Features Dual HBridge for 2Phase Stepper Motors Programmable PeakCurrent up to 1.6 A Continuous (3.0 A Short Time) using a 5bit Current DAC OnChip Current Translator SPI Interface Speed and Load Angle Output A = Assembly Location Seven Step Modes from FullStep Up to 32 MicroSteps WL = Wafer Lot YY = Year Fully Integrated CurrentSense WW = Work Week PWM Current Control with Automatic Selection of Fast and Slow G = PbFree Designator Decay CCCCC = Country of Assembly Low EMC PWM with Selectable Voltage Slopes Active FlyBack Diodes ORDERING INFORMATION Full Output Protection and Diagnosis See detailed ordering and shipping information in the package Thermal Warning and Shutdown dimensions section on page 27 of this data sheet. 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* Output current level may be limited by ambient temperature and heat sinking. *For additional information on our PbFree strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: November, 2019 Rev. 3 AMIS30532/DAMIS30532 Block DIAGRAM VDD CPN CPP VCP VBB CLK Timebase Vreg Chargepump POR EMC MOTXP CS P T W OTP R M DI SPI A MOTXN Isense N DO S L NXT A Logic & EMC Load MOTYP T Registers DIR Angle P O R W SLA M Temp. MOTYN Isense POR/WD Sense CLR AMIS30532 Band ERR gap GND Figure 1. Block Diagram AMIS 30532 Table 1. PIN LIST AND DESCRIPTION Equivalent Name Pin Description Type Schematic GND 1 Ground Supply DI 2 SPI Data In Digital Input Type 2 CLK 3 SPI Clock Input Digital Input Type 2 NXT 4 Next MicroStep Input Digital Input Type 2 DIR 5 Direction Input Digital Input Type 2 ERR 6 Error Output (Open Drain) Digital Output Type 4 SLA 7 Speed Load Angle Output Analog Output Type 5 / 8 No Function (to be left open in normal operation) CPN 9 Negative Connection of Charge Pump Capacitor High Voltage CPP 10 Positive Connection of Charge Pump Capacitor High Voltage VCP 11 ChargePump FilterCapacitor High Voltage CLR 12 Clear = Chip Reset Input Digital Input Type 1 CS 13 SPI Chip Select Input Digital Input Type 2 VBB 14 High Voltage Supply Input Supply Type 3 MOTYP 15, 16 Negative End of Phase Y Coil Output Driver Output GND 17, 18 Ground, Heat Sink Supply MOTYN 19, 20 Positive End of Phase Y Coil Output Driver Output MOTXN 21, 22 Positive End of Phase X Coil Output Driver Output GND 23, 24 Ground, Heat Sink Supply MOTXP 25, 26 Negative End of Phase X Coil Output Driver Output VBB 27 High Voltage Supply Input Supply Type 3 / 30 No Function (to be left open in normal operation) POR/WD 28 PowerOnReset and Watchdog Reset Output (Open Drain) Digital Output Type 2 TST0 29 Test Pin Input (to be tied to ground in normal operation) Digital Input DO 31 SPI Data Output (Open Drain) Digital Output Type 4 VDD 32 Logic Supply Output (needs external decoupling capacitor) Supply Type 6 www.onsemi.com 2