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Numéro de sérieAMIS-30512
CategoriePower Management => Motor Controller/Drivers => Stepper Motor controller/driver
DescriptionStepper Motor Driver
The AMIS-30512 is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and an SPI interface with an external microcontroller. It has an on-chip voltage regulator, reset-output and watchdog reset, able to supply peripheral devices. The AMIS-30512 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. The chip provides a so-called speed and load angle output. This allows the creation of stall detection algorithms and control loops based on load-angle to adjust torque and speed. It uses a proprietary PWM algorithm for reliable current control.
SociétéON Semiconductor
DatasheetTélécharger AMIS-30512 datasheet
 
 
  • Description courte

  • The is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and a SPI interface with an external microcontroller. It has an on-chip voltage regulator, reset-output and watchdog reset, able to supply peripheral devices. The AMIS-30512 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. The chip provides a so-called "speed and load angle" output. This allows the creation of stall detection algorithms and control loops based on load-angle to adjust torque and speed. It is using a proprietary PWM algorithm for reliable current control. The AMIS-30512 is implemented in I2T100 technology, enabling both high-voltage analog circuitry and digital functionality on the same chip. The chip is fully compatible with the automotive voltage requirements. The AMIS-30512 is ideally suited for general-purpose stepper motor applications in the automotive, industrial, medical, and marine environment.

    DO VDD GND DI CLK NXT DIR ERR SLA CPN CPP VCP TSTO POR/WD VBB MOTXP GND MOTXN MOTYN GND MOTYP VBB CS CLR

    · Dual H-Bridge for 2-phase Stepper Motors· Programmable Peak-current 800 mA Using a 5-bit Current·

    DAC On-chip Current Translator SPI Interface Speed and Load Angle Output Seven Step Modes from Full-step to 32 Micro-steps Fully Integrated Current-sense PWM Current Control with Automatic Selection of Fast and Slow Decay Low EMC PWM with Selectable Voltage Slopes Active Fly-back Diodes Full Output Protection and Diagnosis Thermal Warning and Shutdown Compatible with 3.3 V Microcontrollers, 5 V Tolerant Inputs Integrated 5 V Regulator to Supply External Microcontroller Integrated Reset Function to Reset External Microcontroller Integrated Watchdog Function

    Device AMIS30512 Package SOIC 24 Shipping Tape & Reel

    Table of Contents Page Introduction. 1 Key Features. 1 Ordering Information. 1 Block Diagram. 2 Pin List and Descriptions. 3 Electrical Specifications. 3 Typical Application Schematic. 9 Functional Description. 10 SPI Interface. 21 Soldering Information. 29 Package Outline. 30

    VDD CLK Timebase Vreg POR DI DO NXT DIR SLA POR/WD CLR ERR TST0 Band- gap Temp. Sense Logic & Registers Load Angle SPI OTP

    Name DO VDD GND DI CLK NXT DIR ERR SLA CPN CPP VCP CLR CS VBB MOTYP GND MOTYN MOTXN GND MOTXP VBB POR/WD TST0 Pin SPI data output (open drain) Logic Supply Input (needs external decoupling capacitor) Ground SPI data in SPI clock input Next micro-step input Direction input Error Output (open drain) Speed Load Angle Output Negative connection of charge pump capacitor Positive connection of charge pump capacitor Charge-pump filter-capacitor "Clear" = Chip Reset input SPI chip select input High Voltage Supply Input Negative end of phase Y coil output Ground Positive end of phase Y coil output Positive end of phase X coil output Ground Negative end of phase X coil output High Voltage Supply Input Power-on-reset (POR) and watchdog reset output (open drain) Test pin input (to be tied to ground in normal operation) Description

    Symbol VBB Tstrg Tamb VESD Parameter Analog DC supply voltage (Note 1) Storage temperature Ambient temperature under bias Electrostatic discharges on component level (Note 2) Min. Max. Units °C kV

    Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. For limited time s. 2. Human body model (100 pF via 1.5 kW, according to JEDEC EIA-JESD22-A114-B).

    Symbol VBB Ta Tj NOTE: Analog DC supply Ambient temperature VBB +18 Ambient temperature VBB +30 Junction temperature Parameter Min. +6 -40 Max. Units V °C

    Operating ranges define the limits for functional operation and parametric characteristics of the device. Note that the functionality of the chip outside these operating ranges is not guaranteed. Operating outside the recommended operating ranges for extended periods of time may affect device reliability.